MAX22445 [MAXIM]
Reinforced, Fast, Low-Power, Four-Channel Digital Isolators;
| 型号： | MAX22445 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Reinforced, Fast, Low-Power, Four-Channel Digital Isolators |
| 文件： | 总31页 (文件大小：1635K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Click here for production status of specific part numbers.
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
General Description
Benefits and Features
● Reinforced Galvanic Isolation for Fast Digital Signals
The MAX22444–MAX22446 are reinforced, fast, low-
power 4-channel digital galvanic isolators using Maxim’s
proprietary process technology. These devices transfer
digital signals between circuits with different power
domains, using as little as 0.74mW per channel at 1Mbps
(1.8V supply). All of the devices in the family feature
reinforced isolation for a withstand voltage rating of
• Up to 200Mbps Maximum Data Rate
• Withstands 5kV
for 60s (V
)
RMS
ISO
• Continuously Withstands 1500V
• Withstands ±10kV Surge Between GNDA and
GNDB with 1.2/50μs waveform
(V
)
RMS IOWM
• High CMTI (50kV/μs, Typical)
5kV
for 60 seconds.
RMS
● Low Power Consumption
• 0.74mW per Channel at 1Mbps with V
= 1.8V
= 3.3V
DD
The MAX22444–MAX22446 family offers all possible
unidirectional channel configurations to accommodate
any 4-channel design, including SPI, RS-485, and
digital I/O applications. Output enable for the A side of the
MAX22445R/S/U/V is active-low, making them ideal for
isolating a port on a shared SPI bus since the CS signal
can directly enable the MISO signal on the isolator. All
other output enables in the MAX22444-MAX22446 family
are the traditional active-high.
• 1.4mW per Channel at 1Mbps with V
DD
• 3.2mW per Channel at 100Mbps with V
= 1.8V
DD
● Options to Support a Broad Range of Applications
• 2 Maximum Data Rates (200Mbps, 25Mbps)
• 3 Direction Configurations
• Active-High or Active-Low Enable Inputs
• 2 Fixed Output Default States (High/Low) or Pin-
Selectable (M/N Versions)
All channels on the MAX22444–MAX22446M/N are
always enabled, however, the default state of the outputs
of these devices is selectable.
Applications
● Isolated SPI Interface
● Fieldbus Communications for Industrial Automation
● Isolated RS-485/RS-422, CAN
● Battery Management
Devices are available with a maximum data rate of either
25Mbps or 200Mbps, and with outputs that are either
default-high or default-low. The default is the state the output
assumes when the input is either not powered or is open-
circuit. See the Ordering Information and Product Selector
Guide for suffixes associated with each option. Independent
1.71V to 5.5V supplies on each side of the isolator also
make the devices suitable for use as level translators.
● Medical Systems
Safety Regulatory Approvals
● UL According to UL1577
● cUL According to CSA Bulletin 5A
● VDE 0884-11 Reinforced Isolation
All of the devices in the MAX22444–MAX22446 family are
available in a 16-pin wide-body SOIC package with 8mm
of creepage and clearance. The package material has a
minimum comparative tracking index (CTI) of 400V, which
gives it a group II rating in creepage tables. All devices
are rated for operation at ambient temperatures of -40°C
to +125°C.
Ordering Information and Product Selector Guide appear at
end of data sheet.
19-100188; Rev 7; 3/20
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Absolute Maximum Ratings
V
to GNDA........................................................-0.3V to +6V
Continuous Power Dissipation (T = +70°C)
DDA
A
V
to GNDB........................................................-0.3V to +6V
Wide SOIC (derate 14.1mW/°C above +70°C).......1126.8mW
DDB
IN_ on Side A, ENA, ENA, DEFA to GNDA.............-0.3V to +6V
Operating Temperature Range......................... -40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range............................ -60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow).......................................+260°C
IN_ on Side B, ENB, DEFB to GNDB .....................-0.3V to +6V
OUT_ on Side A to GNDA......................-0.3V to (V
OUT_ on Side B to GNDB .....................-0.3V to (V
Short-Circuit Continuous Current
+ 0.3V)
+ 0.3V)
DDA
DDB
OUT_ on Side A to GNDA,
OUT_ on Side B to GNDB............................................±30mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any
other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
Package Information
PACKAGE TYPE: 16 Wide SOIC
Package Code
W16MS+12
21-0042
Outline Number
Land Pattern Number
90-0107
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θ
)
71°C/W
24°C/W
JA
Junction to Case (θ
)
JC
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
DC Electrical Characteristics
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 1, 3)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
POWER SUPPLY
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Relative to GNDA
Relative to GNDB
1.71
1.71
5.5
5.5
DDA
Supply Voltage
V
DDB
Undervoltage-Lockout
Threshold
V
V
rising
1.5
1.6
45
1.66
V
UVLO_
DD_
Undervoltage-Lockout
Threshold Hysteresis
V
mV
UVLO_HYST
Maxim Integrated
│ 2
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
DC Electrical Characteristics (continued)
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 1, 3)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
0.54
0.53
0.52
0.50
1.67
1.64
1.62
1.58
4.63
4.53
4.48
4.34
1.19
1.17
1.17
1.14
2.28
1.85
1.68
1.51
5.66
3.98
3.28
2.69
0.70
0.69
0.68
0.66
1.83
1.70
1.63
1.56
4.89
4.39
4.18
3.93
MAX
1.00
0.97
0.96
0.68
2.50
2.43
2.41
2.07
6.31
6.17
6.11
5.60
2.06
2.02
2.01
1.92
3.29
2.79
2.58
2.33
7.07
5.16
4.34
3.59
1.26
1.23
1.22
0.99
2.70
2.53
2.45
2.14
6.51
5.93
5.67
5.11
UNITS
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
= 5V
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
= 3.3V
= 2.5V
= 1.8V
= 5V
500kHz square
wave, C = 0pF
L
Side A Supply Current
(MAX22444_)
(Note 2)
= 3.3V
= 2.5V
= 1.8V
= 5V
12.5MHz square
wave, C = 0pF
L
I
mA
DDA
= 3.3V
= 2.5V
= 1.8V
= 5V
50MHz square
wave, C = 0pF
L
= 3.3V
= 2.5V
= 1.8V
= 5V
500kHz square
wave, C = 0pF
L
Side B Supply Current
(MAX22444_)
(Note 2)
= 3.3V
= 2.5V
= 1.8V
= 5V
12.5MHz square
wave, C = 0pF
L
I
mA
DDB
= 3.3V
= 2.5V
= 1.8V
= 5V
50MHz square
wave, C = 0pF
L
= 3.3V
= 2.5V
= 1.8V
= 5V
500kHz square
wave, C = 0pF
L
Side A Supply Current
(MAX22445_)
(Note 2)
= 3.3V
= 2.5V
= 1.8V
= 5V
12.5MHz square
wave, C = 0pF
L
I
mA
DDA
= 3.3V
= 2.5V
= 1.8V
50MHz square
wave, C = 0pF
L
Maxim Integrated
│ 3
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
DC Electrical Characteristics (continued)
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 1, 3)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
1.03
1.01
1.01
0.98
2.13
1.80
1.66
1.53
5.41
4.11
3.58
3.11
0.87
0.85
0.84
0.82
1.98
1.75
1.65
1.55
5.15
4.25
3.88
3.52
0.87
0.85
0.84
0.82
1.98
1.75
1.65
1.55
5.15
4.25
3.88
3.52
MAX
1.80
1.76
1.75
1.61
3.09
2.70
2.54
2.27
6.88
5.41
4.78
4.11
1.53
1.49
1.49
1.30
2.89
2.61
2.49
2.20
6.69
5.66
5.22
4.60
1.53
1.49
1.49
1.30
2.89
2.61
2.49
2.20
6.69
5.66
5.22
4.60
UNITS
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
= 5V
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
DDB
= 3.3V
= 2.5V
= 1.8V
= 5V
500kHz square
wave, C = 0pF
L
Side B Supply Current
(MAX22445_)
(Note 2)
= 3.3V
= 2.5V
= 1.8V
= 5V
12.5MHz square
wave, C = 0pF
L
I
mA
DDB
= 3.3V
= 2.5V
= 1.8V
= 5V
50MHz square
wave, C = 0pF
L
= 3.3V
= 2.5V
= 1.8V
= 5V
500kHz square
wave, C = 0pF
L
Side A Supply Current
(MAX22446_)
(Note 2)
= 3.3V
= 2.5V
= 1.8V
= 5V
12.5MHz square
wave, C = 0pF
L
I
mA
DDA
= 3.3V
= 2.5V
= 1.8V
= 5V
50MHz square
wave, C = 0pF
L
= 3.3V
= 2.5V
= 1.8V
= 5V
500kHz square
wave, C = 0pF
L
Side B Supply Current
(MAX22446_)
(Note 2)
= 3.3V
= 2.5V
= 1.8V
= 5V
12.5MHz square
wave, C = 0pF
L
I
mA
DDB
= 3.3V
= 2.5V
= 1.8V
50MHz square
wave, C = 0pF
L
Maxim Integrated
│ 4
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
DC Electrical Characteristics (continued)
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 1, 3)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INTERFACE (IN_, EN_, ENA, DEF_, OUT_)
0.7 x
2.25V ≤ V
≤ 5.5V
DD_
V
DD_
EN_, ENA, IN_
0.75 x
1.71V ≤ V
DD_
< 2.25V
V
DD_
Input High Voltage
V
V
IH
0.7 x
2.25V ≤ V
DD_
≤ 5.5V
V
DD_
DEF_ (Note 2)
0.75 x
1.71V ≤ V
DD_
< 2.25V
V
DD_
2.25V ≤ V
1.71V ≤ V
≤ 5.5V
0.8
0.7
DD_
EN_, ENA, IN_
< 2.25V
DD_
Input Low Voltage
V
V
IL
2.25V ≤ V
≤ 5.5V
< 2.25V
DD_
0.8
0.7
DEF_ (Note 2)
1.71V ≤ V
DD_
MAX2244_B/E/M/R/U
MAX2244_C/F/N/S/V
410
80
-5
EN_, ENA,
DEF_, IN_
Input Hysteresis
V
mV
µA
HYS
MAX2244_B/C/R/S
-10
-1.5
-1.5
10
IN_ Input Pullup Current
I
PU
MAX2244_M/N, DEFA = DEFB = high
MAX2244_E/F/U/V
-10
1.5
1.5
-5
5
IN_ Input Pulldown Current
I
µA
PD
MAX2244_M/N, DEFA = DEFB = low
5
2
10
IN_ Input Capacitance
ENA Pullup Current
ENB Pullup Current
ENA Pulldown Current
DEF_ Pullup Current
C
f
= 1MHz
SW
pF
µA
μA
µA
µA
IN
I
MAX2244_B/C/E/F
MAX2244_B/C/E/F/R/S/U/V
MAX22445R/S/U/V
MAX2244_M/N
-10
-10
1.5
-10
-5
-5
5
-1.5
-1.5
10
PU_ENA
PU_ENB
I
I
PD_EN
I
-5
-1.5
PU_DEF
V
- 0.4
DD_
OUT_ Output Voltage High
OUT_ Output Voltage Low
V
I
I
= -4mA source
= 4mA sink
V
V
OH
OUT_
OUT_
V
0.4
OL
Maxim Integrated
│ 5
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Dynamic Characteristics MAX2244_C/F/N/S/V
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 2, 4)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
IN_ = GND_ or V (Note 5)
MIN
TYP
MAX
UNITS
Common-Mode Transient
Immunity
CMTI
50
kV/µs
DD_
2.25V ≤ V
1.71V ≤ V
≤ 5.5V
200
150
DD_
Maximum Data Rate
Minimum Pulse Width
DR
Mbps
ns
MAX
< 2.25V
DD_
2.25V ≤ V
≤ 5.5V
5.00
6.67
9.2
IN_ to
OUT_
DD_
DD_
PW
MIN
1.71V ≤ V
< 2.25V
4.5V ≤ V
≤ 5.5V
≤ 3.6V
4.1
4.2
4.9
7.1
4.3
4.4
5.1
7.2
5.7
6.5
7.9
12.0
6.1
6.9
8.2
12.1
0.4
0.4
0.3
0.0
DD_
IN_ to
OUT_,
C = 15pF
L
3.0V ≤ V
10.2
13.4
20.3
9.4
DD_
t
PLH
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
Propagation Delay
(Figure 3)
DD_
ns
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
IN_ to
OUT_,
3.0V ≤ V
10.5
14.1
21.7
2.0
DD_
t
PHL
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
C = 15pF
L
DD_
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
3.0V ≤ V
2.0
DD_
Pulse Width Distortion
PWD
|t
- t
|
ns
PLH PHL
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
2.0
DD_
2.0
DD_
4.5V ≤ V
≤ 5.5V
3.7
DD_
3.0V ≤ V
≤ 3.6V
4.3
DD_
t
SPLH
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
6.0
DD_
10.3
3.8
Propagation Delay Skew
Part-to-Part (Same Channel)
DD_
ns
ns
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
3.0V ≤ V
4.7
DD_
t
SPHL
2.25V ≤ V
≤ 2.75V
≤ 1.89V
6.5
DD_
DD_
1.71V ≤ V
11.5
Propagation Delay Skew
Channel-to-Channel
(Same Direction)
t
1.71V ≤ V
≤ 5.5V
≤ 5.5V
2.0
2.0
SCSLH
DD_
DD_
t
1.71V ≤ V
SCSHL
Maxim Integrated
│ 6
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Dynamic Characteristics MAX2244_C/F/N/S/V (continued)
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 2, 4)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
2.9
UNITS
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
3.0V ≤ V
3.4
DD_
t
SCOLH
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
4.9
DD_
Propagation Delay Skew
Channel-to-Channel
(Opposite Direction)
10.2
3.2
DD_
ns
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
3.0V ≤ V
3.8
DD_
t
SCOHL
2.25V ≤ V
1.71V ≤ V
200Mbps
≤ 2.75V
≤ 1.89V
5.3
DD_
10.9
DD_
Peak Eye Diagram Jitter
Clock Jitter RMS
T
100
7.5
ps
ps
JIT(PK)
T
500kHz clock input, rising/falling edges
JCLK(RMS)
4.5V ≤ V
≤ 5.5V
≤ 3.6V
0.8
1.1
1.5
2.4
1.0
1.4
1.9
3.0
DD_
3.0V ≤ V
Rise Time
(Figure 3)
DD_
t
C = 5pF
ns
ns
R
L
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
3.0V ≤ V
Fall Time
(Figure 3)
DD_
t
C = 5pF
L
F
2.25V ≤ V
1.71V ≤ V
4.5V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
≤ 5.5V
≤ 3.6V
ENA to
OUT_,
EN_ to
OUT_,
DD_
3.9
6.4
Enable to Data Valid
(MAX2244_C/F/S/V only,
Figure 4)
3.0V ≤ V
DD_
t
ns
ns
EN
2.25V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
10.1
18.4
6.3
C = 15pF
L
1.71V ≤ V
4.5V ≤ V
≤ 5.5V
≤ 3.6V
DD_
DD_
ENA to
OUT_,
EN_ to
OUT_,
Enable to Tristate
(MAX2244_C/F/S/V only,
Figure 4)
3.0V ≤ V
9.0
t
TRI
2.25V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
12.6
19.2
C = 15pF
L
1.71V ≤ V
Maxim Integrated
│ 7
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Dynamic Characteristics MAX2244_B/E/M/R/U
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 2, 4)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Common-Mode Transient
Immunity
CMTI
IN_ = GND_ or VDD_ (Note 5)
50
kV/µs
Maximum Data Rate
Minimum Pulse Width
Glitch Rejection
DR
25
Mbps
ns
MAX
PW
IN_ to OUT_
IN_ to OUT_
40
MIN
10
17
29
ns
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
17.4
17.6
18.3
20.7
16.9
17.2
17.8
19.8
24.2
25.0
26.4
30.6
24.0
24.8
26.1
30.0
0.2
32.5
33.7
36.7
43.5
33.6
35.1
38.2
45.8
4.0
DD_
IN_ to
OUT_,
C = 15pF
L
DD_
t
PLH
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
Propagation Delay
(Figure 3)
DD_
ns
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
DD_
IN_ to
OUT_,
DD_
t
PHL
2.25V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
C = 15pF
L
1.71V ≤ V
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
DD_
0.2
4.0
DD_
Pulse Width Distortion
PWD
|t
- t
|
ns
PLH PHL
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
0.3
4.0
DD_
0.6
4.0
DD_
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
15.1
15.0
15.4
20.5
13.9
14.2
16.0
21.8
DD_
≤ 3.6V
DD_
t
SPLH
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
Propagation Delay Skew
Part-to-Part (Same Channel)
DD_
ns
ns
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
DD_
DD_
t
SPHL
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
Propagation Delay Skew
Channel-to-Channel
(Same Direction)
t
1.71V ≤ V
1.71V ≤ V
≤ 5.5V
≤ 5.5V
2.0
SCSLH
DD_
DD_
t
2.0
SCSHL
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
13.9
13.7
14.2
19.4
13.0
12.9
14.4
20.1
DD_
DD_
t
SCOLH
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
Propagation Delay Skew
Channel-to-Channel
(Opposite Direction)
DD_
ns
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
DD_
DD_
t
SCOHL
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
DD_
DD_
Maxim Integrated
│ 8
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Dynamic Characteristics MAX2244_B/E/M/R/U (continued)
(V
- V
= 1.71V to 5.5V, V
- V
= 1.71V to 5.5V, C = 15pF, T = -40°C to +125°C, unless otherwise noted. Typical
DDA
GNDA
DDB
GNDB L A
values are at V
- V
= 3.3V, V
- V
= 3.3V, V
= V
, T = +25°C, unless otherwise noted.) (Notes 2, 4)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
T
25Mbps
250
ps
Peak Eye Diagram Jitter
JIT(PK)
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
0.8
1.1
DD_
DD_
Rise Time
(Figure 3)
t
C = 5pF
ns
R
L
2.25V ≤ V
1.71V ≤ V
≤ 2.75V
≤ 1.89V
1.5
DD_
2.4
DD_
4.5V ≤ V
3.0V ≤ V
≤ 5.5V
≤ 3.6V
1.0
DD_
1.4
DD_
Fall Time
(Figure 3)
t
C = 5pF
L
ns
ns
ns
F
2.25V ≤ V
1.71V ≤ V
4.5V ≤ V
≤ 2.75V
1.9
DD_
≤ 1.89V
3.0
DD_
≤ 5.5V
≤ 3.6V
3.9
ENA to
OUT_,
EN_ to
OUT_,
DD_
Enable to Data Valid
(MAX2244_B/E/R/U only,
Figure 4)
3.0V ≤ V
6.4
DD_
t
EN
2.25V ≤ V
1.71V ≤ V
4.5V ≤ V
≤ 2.75V
≤ 1.89V
10.1
18.4
6.3
DD_
C = 15pF
L
DD_
≤ 5.5V
≤ 3.6V
ENA to
OUT_,
EN_ to
OUT_,
DD_
Enable to Tristate
(MAX2244_B/E/R/U only,
Figure 4)
3.0V ≤ V
9.0
DD_
t
TRI
2.25V ≤ V
≤ 2.75V
≤ 1.89V
12.6
19.2
DD_
DD_
C = 15pF
L
1.71V ≤ V
Note 1: All devices are 100% production tested at T = +125°C. Specifications over temperature are guaranteed by design and
A
characterization.
Note 2: Not production tested. Guaranteed by design and characterization.
Note 3: All currents into the device are positive. All currents out of the device are negative. All voltages are referenced to their
respective ground (GNDA or GNDB), unless otherwise noted.
Note 4: All measurements taken with V
= V
, unless otherwise noted.
DDA
DDB
Note 5: CMTI is the maximum sustainable common-mode voltage slew rate while maintaining the correct output. CMTI applies to
both rising and falling common-mode voltage edges. Tested with the transient generator connected between GNDA and
GNDB (V
= 1000V).
CM
ESD Protection
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ESD
Human Body Model, All Pins
±4
kV
Maxim Integrated
│ 9
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Table 1. Insulation Characteristics
PARAMETER
SYMBOL
CONDITIONS
Method B1 = V x 1.875
VALUE
UNITS
IORM
Partial Discharge Test Voltage
V
3977
V
PR
P
P
(t = 1s, partial discharge < 5pC)
Maximum Repetitive Peak
Isolation Voltage
V
(Note 6)
2121
V
IORM
IOWM
Maximum Working Isolation
Voltage
Continuous RMS voltage
(Note 6)
V
1500
8000
5000
V
V
RMS
Maximum Transient Isolation
Voltage
V
t = 1s
V
P
IOTM
Maximum Withstand Isolation
Voltage
V
f
= 60Hz, duration = 60s (Note 7)
SW
ISO
RMS
Reinforced Insulation, test method per
Maximum Surge Isolation Voltage
Insulation Resistance
V
IEC 60065, V
= 1.6 × V
=
6250
V
P
IOSM
TEST
IOSM
10000V
PEAK
12
V
V
V
= 500V, T = 25°C
>10
IO
IO
IO
A
11
R
= 500V, 100°C ≤ T ≤ 125°C
>10
Ω
IO
A
9
= 500V at T = 150°C
S
>10
Barrier Capacitance Side A to
Side B
CIO
f
= 1MHz (Note 8)
1.5
pF
SW
Minimum Creepage Distance
Minimum Clearance Distance
Internal Clearance
CPG
CLR
8
8
mm
mm
mm
Distance through insulation
Material Group II (IEC 60112)
0.021
>400
40/125/21
Comparative Tracking Index
Climate Category
CTI
Pollution Degree
(DIN VDE 0110, Table 1)
2
Note 6: V
, V
, and V
are defined by the IEC 60747-5-5 standard.
ISO IOWM
IORM
Note 7: Product is qualified at V
for 60s and 100% production tested at 120% of V
for 1s.
ISO
ISO
Note 8: Capacitance is measured with all pins on field-side and logic-side tied together.
Safety Regulatory Approvals
UL
The MAX22444–MAX22446 are certified under UL1577. For more details, refer to File E351759.
Rated up to 5000V isolation voltage for single protection.
RMS
cUL (Equivalent to CSA notice 5A)
The MAX22444–MAX22446 are certified up to 5000V
VDE
for single protection. For more details, refer to File E351759.
RMS
The MAX22444–MAX22446 are certified to DIN VDE V 0884-11: 2017-1. For details, see file reference 5015017-4880-
0002/265080/TL7/SCT; Certificate Number 40049143. Reinforced Insulation, Maximum Transient Isolation Voltage 8000V
,
PK
Maximum Repetitive Peak Isolation Voltage 2121V
PK
This coupler is suitable for “safe electrical insulation” only within the safety ratings. Compliance with the safety ratings shall be
ensured by means of suitable protective circuits.
Maxim Integrated
│ 10
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
mine the junction temperature. Thermal impedance val-
Safety Limits
ues (θ and θ ) are available in the Package Thermal
JA
JC
Damage to the IC can result in a low-resistance path
to ground or to the supply and, without current limiting,
the MAX22444-MAX22446 could dissipate excessive
amounts of power. Excessive power dissipation can dam-
age the die and result in damage to the isolation barrier,
potentially causing downstream issues. Table 2 shows the
safety limits for the MAX22444-MAX22446.
Characteristics section of the datasheet and power dis-
sipation calculations are discussed in the Calculating
Power Dissipation section. Calculate the junction tem-
perature (T ) as:
J
T = T + (P x θ )
JA
J
A
D
Figure 1 and Figure 2 show the thermal derating curve
for safety limiting the power and the current of the device.
Ensure that the junction temperature does not exceed
150°C.
The maximum safety temperature (T ) for the device is
S
the 150°C maximum junction temperature specified in the
Absolute Maximum Ratings. The power dissipation (P )
D
and junction-to-ambient thermal impedance (θ ) deter-
JA
THERMAL DERATING CURVE
FOR SAFETY LIMITING CURRENT
350
THERMAL DERATING CURVE
FOR SAFETY POWER LIMITING
2000
1800
1600
1400
1200
1000
800
600
400
200
0
300
250
200
150
100
50
0
0
25
50
75 100 125 150 175 200
0
25
50
75 100 125 150 175 200
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
Figure 1. Thermal Derating Curve for Safety Power Limiting
Figure 2. Thermal Derating Curve for Safety Current Limiting
Table 2. Safety Limiting Values for the MAX22444-MAX22446
PARAMETER
Safety Current on Any Pin
Total Safety Power Dissipation
Maximum Safety Temperature
SYMBOL
TEST CONDITIONS
T = 150°C, T = 25°C
MAX
300
UNIT
mA
I
S
J
A
P
T = 150°C, T = 25°C
1760
150
mW
°C
S
S
J
A
T
Maxim Integrated
│ 11
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Test Circuits and Timing Diagrams
V
DDA
IN1, IN2
50%
50%
GNDA
0.1µF
0.1µF
t
t
PLH
PHL
V
DDA
V
DDB
V
V
DDB
DDA
V
DDB
MAX2244_
OUT1
OUT2
50%
50%
50Ω
GNDB
IN_
OUT_
C
L
t
SCSLH
90%
TEST
SOURCE
t
SCSHL
R
L
V
DDB
GNDA
GNDB
50%
10%
50%
GNDB
(A)
t
t
F
R
(B)
Figure 3. Test Circuit (A) and Timing Diagram (B)
ISOLATION
BARRIER
SW3
SW4
SW1
R
L
V
OR V
DDB
V
OR V
DDB
DDA
DDA
1kΩ
OUT_
IN_
C
L
GNDA OR GNDB
GNDA OR GNDB
EN_, ENA
15pF
SW2
GNDA OR
GNDB
GENERATOR
50Ω
GNDA OR GNDB
MAX2244_B/C/E/F/R/S/U/V
MAX22445R/S/U/V
V
OR V
DDB
V
DDA
DDA
SW1: OPEN
SW1: OPEN
SW2: CLOSED
SW3: CLOSED
SW4: OPEN
SW2: CLOSED
SW3: CLOSED
SW4: OPEN
ENA OR E NB
ENA
50%
50%
50%
50%
GNDA OR GNDB
GNDA
t
t
t
EN
EN
TRI
t
TRI
V
OR V
DDB
DDA
V
DDA
V
V
DD_
2
DD_
2
OUT_
OUT_
0.25V
0.25V
V
V
OL
OL
MAX2244_B/C/E/F/R/S/U/V
MAX22445R/S/U/V
V
OR V
V
DDA
DDA
DDB
SW1: CLOSED
SW2: OPEN
SW3: OPEN
SW1: CLOSED
SW2: OPEN
SW3: OPEN
ENA OR E NB
ENA
50%
50%
50%
50%
SW4: CLOSED
SW4: CLOSED
GNDA OR GNDB
GNDA
t
t
TRI
TRI
t
t
EN
EN
V
V
OH
OH
0.25V
0.25V
V
V
DD_
2
DD_
2
OUT_
GNDA
OUT_
GNDA OR GNDB
Figure 4. Enable to Output Timing (t , t
)
EN TRI
Maxim Integrated
│ 12
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Characteristics
(V
- V
= +3.3V, V
- V
= +3.3V, V
= V
, T = +25°C, unless otherwise noted.)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
SIDE A SUPPLY CURRENT
vs. DATA RATE
SIDE A SUPPLY CURRENT
vs. DATA RATE
SIDE A SUPPLY CURRENT
vs. DATA RATE
toc02
toc03
toc01
3
1.2
1.1
1
1
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
MAX22444C/F/N
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
MAX22445B/E/M/R/U
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
MAX22444B/E/M
2.6
0.9
0.8
0.7
0.6
0.5
0.4
2.2
1.8
1.4
1
0.9
0.8
0.7
0.6
VDDA = 1.8V
VDDA = 1.8V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
VDDA = 1.8V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
0.6
0.2
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
5
10
15
20
25
0
5
10
15
20
25
DATA RATE (Mbps)
DATA RATE (Mbps)
SIDE A SUPPLY CURRENT
vs. DATA RATE
SIDE A SUPPLY CURRENT
vs. DATA RATE
SIDE A SUPPLY CURRENT
vs. DATA RATE
toc04
toc05
toc06
3
2.6
2.2
1.8
1.4
1
1.3
1.2
1.1
1
3.4
3
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
MAX22445C/F/N/S/V
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
MAX22446B/E/M
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
MAX22446C/F/N
2.6
2.2
1.8
1.4
1
0.9
0.8
0.7
VDDA = 1.8V
VDDA = 1.8V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
VDDA = 1.8V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
0.6
0.6
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
5
10
15
20
25
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
DATA RATE (Mbps)
SIDE B SUPPLY CURRENT
SIDE B SUPPLY CURRENT
vs. DATA RATE
vs. DATA RATE
toc07
toc08
2.7
2.4
2.1
1.8
1.5
1.2
0.9
2.7
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 0pF, MAX22444B/E/M
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
2.4 CL = 15pF, MAX22444B/E/M
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
VDDB = 1.8V
2.1
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
1.8
1.5
1.2
0.9
0
5
10
15
20
25
0
5
10
15
20
25
DATA RATE (Mbps)
DATA RATE (Mbps)
Maxim Integrated
│ 13
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Characteristics (continued)
(V
- V
= +3.3V, V
- V
= +3.3V, V
= V
, T = +25°C, unless otherwise noted.)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
SIDE B SUPPLY CURRENT
vs. DATA RATE
SIDE B SUPPLY CURRENT
vs. DATA RATE
SIDE B SUPPLY CURRENT
vs. DATA RATE
toc09
toc10
toc11
12
12
2.7
2.4
2.1
1.8
1.5
1.2
0.9
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 15pF, MAX22444C/F/N
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 0pF, MAX22444C/F/N
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 0pF, MAX22445B/E/M/R/U
10
8
10
8
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
6
6
4
4
2
2
0
0
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
5
10
15
20
25
DATA RATE (Mbps)
SIDE B SUPPLY CURRENT
vs. DATA RATE
SIDE B SUPPLY CURRENT
vs. DATA RATE
SIDE B SUPPLY CURRENT
vs. DATA RATE
toc12
toc13
toc14
2.7
12
10
8
12
10
8
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 15pF, MAX22445C/F/N/S/V
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 0pF, MAX22445C/F/N/S/V
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
2.4 CL = 15pF, MAX22445B/E/M/R/U
VDDB = 1.8V
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
2.1
1.8
1.5
1.2
0.9
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
6
6
4
4
2
2
0
0
0
5
10
15
20
25
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
DATA RATE (Mbps)
SIDE B SUPPLY CURRENT
vs. DATA RATE
SIDE B SUPPLY CURRENT
vs. DATA RATE
toc15
toc16
2.5
2.2
1.9
1.6
1.3
1
2.5
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 0pF, MAX22446B/E/M
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
2.2 CL = 15pF, MAX22446B/E/M
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
VDDB = 1.8V
1.9
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
1.6
1.3
1
0.7
0.7
0
5
10
15
20
25
0
5
10
15
20
25
DATA RATE (Mbps)
DATA RATE (Mbps)
Maxim Integrated
│ 14
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Characteristics (continued)
(V
- V
= +3.3V, V
- V
= +3.3V, V
= V
, T = +25°C, unless otherwise noted.)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
SIDE B SUPPLY CURRENT
vs. DATA RATE
SIDE B SUPPLY CURRENT
vs. DATA RATE
PROPAGATION DELAY
vs. TEMPERATURE
toc17
toc18
toc19
12
10
8
12
32
30
28
26
24
22
20
18
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 0pF, MAX22446C/F/N
DRIVING ONE CHANNEL ON SIDE A
OTHER CHANNELS ARE IN DEFAULT STATE
CL = 15pF, MAX22446C/F/N
VDDA = VDDB
INA TO OUTB, tPLH
MAX2244_B/E/M/R/U
10
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
8
6
4
2
0
6
4
VDD_ = 1.8V
VDD_ = 2.5V
VDD_ = 3.3V
VDD_ = 5.0V
2
0
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
-50
-25
0
25
50
75
100 125
TEMPERATURE (⁰C)
PROPAGATION DELAY
vs. VDDA VOLTAGE
PROPAGATION DELAY
vs. VDDB VOLTAGE
PROPAGATION DELAY
vs. TEMPERATURE
toc20
toc21
toc22
15
12
9
30
25
20
15
10
5
30
25
20
15
10
5
VDDA = VDDB
INA TO OUTB, tPLH
MAX2244_C/F/N/S/V
VDDB = 3.3V
INA TO OUTB, tPLH
VDDA = 3.3V
INA TO OUTB, tPLH
MAX2244_B/E/M/R/U
MAX2244_B/E/M/R/U
6
MAX2244_C/F/N/S/V
MAX2244_C/F/N/S/V
VDD_ = 1.8V
VDD_ = 2.5V
VDD_ = 3.3V
VDD_ = 5.0V
3
0
0
0
-50
-25
0
25
50
75
100 125
1.5
2.5
3.5
VDDA VOLTAGE (V)
4.5
5.5
1.5
2.5
3.5
VDDB VOLTAGE (V)
4.5
5.5
TEMPERATURE (⁰C)
MINIMUM PULSE WIDTH
MINIMUM PULSE WIDTH
toc24
toc23
MAX2244_B/E/M/R/U
40ns PULSE
MAX2244_C/F/N/S/V
5ns PULSE
IN_
IN_
1V/div
1V/div
OUT_
OUT_
1V/div
1V/div
5ns/div
20ns/div
Maxim Integrated
│ 15
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Characteristics (continued)
(V
- V
= +3.3V, V
- V
= +3.3V, V
= V
, T = +25°C, unless otherwise noted.)
DDA
GNDA
DDB
GNDB
GNDA
GNDB A
CLOCK JITTER RMS ON RISING EDGE
MAX2244_C/F/N/S/V
EYE DIAGRAM AT 200MBPS
MAX2244_C/F/N/S/V
toc26
toc25
500kHz CLOCK INPUT
tJCLK(RMS) = 7.5ps
VDDB = 3.0V
400mV/div
400mV/div
OUT_
125ps/div
1ns/div
CLOCK JITTER RMS ON FALLING EDGE
MAX2244_C/F/N/S/V
CLOCK JITTER RMS
vs. TEMPERATURE
toc27
toc28
16
14
12
10
8
500kHz CLOCK INPUT
VDD_ = 5.0
MAX2244_C/F/N/S/V
500kHz CLOCK INPUT
tJCLK(RMS) = 8.0ps
V
FALLING EDGE
400mV/div
OUT_
6
RISING EDGE
4
2
0
-50
-25
0
25
50
75
100 125
125ps/div
TEMPERATURE (°C)
Maxim Integrated
│ 16
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Pin Configurations
TOP VIEW
+
+
1
2
3
4
5
6
7
8
16
15
14
1
2
3
4
5
6
7
8
16
V
V
V
DDA
V
DDA
DDB
DDB
MAX22444B/C/E/F
MAX22444M/N
GNDA
IN1
GNDA
IN1
15
14
GNDB
OUT1
GNDB
OUT1
IN2
13 OUT2
IN2
13 OUT2
IN3
12
11
IN3
12
11
OUT3
OUT4
OUT3
OUT4
IN4
IN4
I.C.
10 ENB
GNDB
DEFA
GNDA
10 DEFB
GNDB
GNDA
9
9
W SOIC
W SOIC
TOP VIEW
+
+
+
1
2
3
4
5
6
7
8
16
15
14
1
2
3
4
5
6
7
8
16
15
14
1
2
3
4
5
6
7
8
16
15
14
V
V
V
DDA
V
V
V
DDB
DDA
DDA
DDB
DDB
MAX22445B/C/E/F
MAX22445R/S/U/V
MAX22445M/N
GNDA
IN1
GNDA
IN1
GNDA
IN1
GNDB
OUT1
GNDB
OUT1
GNDB
OUT1
IN2
13 OUT2
IN2
13 OUT2
IN2
13 OUT2
IN3
12
11
IN3
12
11
IN3
12
11
OUT3
IN4
OUT3
IN4
OUT3
IN4
OUT4
ENA
GNDA
OUT4
ENA
GNDA
OUT4
DEFA
GNDA
10 ENB
GNDB
10 ENB
GNDB
10 DEFB
GNDB
9
9
9
W SOIC
W SOIC
W SOIC
TOP VIEW
+
+
1
2
3
4
5
6
7
8
16
1
16
V
V
V
DDA
V
DDA
DDB
DDB
MAX22446B/C/E/F
MAX22446M/N
GNDA
IN1
15
14
GNDA
IN1
2
3
4
5
6
7
8
15
14
GNDB
OUT1
GNDB
OUT1
IN2
13 OUT2
IN2
13 OUT2
OUT3
OUT4
ENA
12
11
OUT3
OUT4
DEFA
GNDA
12
11
IN3
IN4
IN3
IN4
10 ENB
GNDB
10 DEFB
GNDB
GNDA
9
9
W SOIC
W SOIC
Maxim Integrated
│ 17
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Pin Description
PIN
NAME
MAX22444
B/C/E/F
MAX22444
MAX22445
B/C/E/F
MAX22445
R/S/U/V
MAX22445
M/N
MAX22446
B/C/E/F
MAX22446
M/N
M/N
V
1
2, 8
3
1
2, 8
3
1
2, 8
3
1
2, 8
3
1
2, 8
3
1
2, 8
3
1
2, 8
3
DDA
GNDA
IN1
IN2
4
4
4
4
4
4
4
IN3
5
5
5
5
5
12
11
—
—
7
12
11
—
7
IN4
6
6
11
—
—
7
11
—
—
—
7
11
—
7
I.C.
7
—
7
DEFA
ENA
ENA
GNDB
ENB
—
—
—
9, 15
10
—
11
12
13
14
16
—
—
9, 15
—
10
11
12
13
14
16
—
—
9, 15
—
—
—
9, 15
—
—
9, 15
10
—
6
—
9, 15
10
—
6
9, 15
10
—
6
DEFB
OUT4
10
6
10
6
OUT3
OUT2
OUT1
12
13
14
16
12
13
14
16
12
13
14
16
5
5
13
14
16
13
14
16
V
DDB
Maxim Integrated
│ 18
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Pin Description (continued)
NAME
FUNCTION
POWER
Power Supply Input for Side A. Bypass V
to the pin.
to GNDA with a 0.1μF ceramic capacitor as close as possible
to GNDB with a 0.1μF ceramic capacitor as close as
DDA
V
DDA
GNDA
Ground Reference for Side A.
Power Supply Input for Side B. Bypass V
possible to the pin.
DDB
V
DDB
GNDB
Ground Reference for Side B.
INPUTS
IN1
IN2
IN3
IN4
Logic Input 1 on Side A. Corresponds to Logic Output 1 on Side B.
Logic Input 2 on Side A. Corresponds to Logic Output 2 on Side B.
Logic Input 3 on Side A/B. Corresponds to Logic Output 3 on Side B/A.
Logic Input 4 on Side A/B. Corresponds to Logic Output 4 on Side B/A.
OUTPUTS
OUT1
Logic Output 1 on Side B. OUT1 is the logic output for the IN1 input on Side A.
Logic Output 2 on Side B. OUT2 is the logic output for the IN2 input on Side A.
Logic Output 3 on Side B/A. OUT3 is the logic output for the IN3 input on Side A/B.
Logic Output 4 on Side B/A. OUT4 is the logic output for the IN4 input on Side A/B.
OUT2
OUT3
OUT4
ENABLE INPUTS
ENA
Active-High Enable for Side A. ENA has an internal 5μA pull-up to V
.
DDA
ENA
Active-Low Enable for Side A. ENA has an internal 5μA pull-down to GNDA.
Active-High Enable for Side B. ENB has an internal 5μA pull-up to V
ENB
.
DDB
DEFAULT CONTROL
Default Control Input for Side A. Connect DEFA to V
to set side A outputs to a default-high state and to
DDA
enable the pullup current on side A inputs. Connect DEFA to GNDA to set side A outputs to a default-low
state and enable the pulldown current on side A inputs. DEFA must be tied to the same state (high or low)
as DEFB.
DEFA
DEFB
Default Control Input for Side B. Connect DEFB to V
to set side B outputs to a default-high state and to
DDB
enable the pullup current on side B inputs. Connect DEFB to GNDB to set side B outputs to a default-low
state and enable the pulldown current on side B inputs. DEFB must be tied to the same state (high or low)
as DEFA.
INTERNALLY CONNECTED
I.C.
Internally Connected. Leave unconnected or connect to GNDA or V
.
DDA
Maxim Integrated
│ 19
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Functional Diagrams
V
DDB
V
V
V
DDA
DDB
DDA
IN1
MAX22444M/N
MAX22444B/C/E/F
DEFB
OUT1
ENB
IN1
OUT1
OUT2
OUT3
IN2
IN2
IN3
OUT2
OUT3
IN3
IN4
IN4
I.C.
OUT4
GNDB
OUT4
GNDB
DEFA
GNDA
GNDA
V
V
DDB
DDB
V
V
V
V
DDA
IN1
DDB
DDA
IN1
DDA
IN1
MAX22445R/S/U/V
MAX22445M/N
MAX22445B/C/E/F
ENB
DEFB
OUT1
ENB
OUT1
OUT2
OUT1
OUT2
OUT3
IN2
IN3
IN2
IN3
IN2
IN3
OUT2
OUT3
OUT3
OUT4
IN4
OUT4
ENA
IN4
OUT4
DEFA
GNDA
IN4
ENA
GNDB
GNDB
GNDB
GNDA
GNDA
Maxim Integrated
│ 20
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Functional Diagrams (continued)
V
DDB
V
V
V
DDA
IN1
DDB
DDA
IN1
MAX22446M/N
MAX22446B/C/E/F
DEFB
OUT1
ENB
OUT1
OUT2
IN2
IN2
OUT2
IN3
IN3
OUT3
OUT3
OUT4
IN4
OUT4
DEFA
GNDA
IN4
ENA
GNDB
GNDB
GNDA
Maxim Integrated
│ 21
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
feature a refresh circuit to ensure output accuracy when an
input remains in the same state indefinitely.
Detailed Description
The MAX22444–MAX22446 are a family of 4-channel
reinforced digital isolators. The MAX22444–MAX22446
Digital Isolation
have an isolation rating of 5kV . The MAX22444-
RMS
The MAX22444-MAX22446 provide reinforced galvanic
isolation for digital signals that are transmitted between
two ground domains. The devices withstand differences of
MAX22446 family offers all possible unidirectional channel
configurations to accommodate any 4-channel design,
including SPI, RS-232, RS-485, and digital I/O applications.
For applications requiring bidirectional channels, such as
up to 5kV
for up to 60 seconds, and up to 2121V
RMS
PEAK
of continuous isolation.
2
I C, see the MAX14933 and MAX14937.
Level-Shifting
The wide supply voltage range of both V
allows the MAX22444-MAX22446 to be used for level
translation in addition to isolation. V and V can be
independently set to any voltage from 1.71V to 5.5V. The
supply voltage sets the logic level on the corresponding
side of the isolator.
The MAX22444 features four channels transferring digital
signals in one direction for applications such as isolated
digital I/O. The MAX22445 has three channels transmitting
data in one direction and one channel transmitting in the
opposite direction, making them ideal for applications
such as isolated SPI and RS-485 communication. The
MAX22446 provides further design flexibility with two
channels in each direction for isolated RS-232 or other
applications.
and V
DDB
DDA
DDA
DDB
Unidirectional Channels
Each channel of the MAX22444-MAX22446 is unidirectional;
it only passes data in one direction, as indicated in the
functional diagram. Each device features four unidirectional
channels that operate independently with guaranteed data
rates from DC up to 25Mbps (B/E/M/R/U versions), or from
DCto200Mbps(C/F/N/S/Vversions).Theoutputdriverofeach
channel is push-pull, eliminating the need for pullup
resistors. The outputs are able to drive both TTL and
CMOS logic inputs.
Devices are available in a 16-pin wide-body SOIC
package and are rated for up to 5kV
. This
RMS
family of digital isolators offers low-power operation, high
electromagnetic interference (EMI) immunity, and stable
temperature performance through Maxim’s proprietary
process technology. The devices isolate different ground
domains and block high-voltage/high-current transients
from sensitive or human interface circuitry.
Devices are available with a maximum data rate of either
25Mbps (B/E/M/R/U versions) or 200Mbps (C/F/N/S/V
versions). The MAX2244_B/C/R/S feature default-high outputs.
The MAX2244_E/F/U/V feature default-low outputs. The
MAX2244_M/N feature user-selectable default-high or
default-low outputs. The default is the state the output
assumes when the input is not powered or if the input is
Startup and Undervoltage-Lockout
The V
and V
supplies are both internally monitored
DDA
DDB
for undervoltage conditions. Undervoltage events can occur
during power-up, power-down, or during normal operation
due to a sagging supply voltage. When an undervoltage
condition is detected on either supply while the outputs
are enabled, all outputs go to their default states regardless of
the state of the inputs (Table 3, Table 4, Table 5). Figure 5
through Figure 8 show the behavior of the outputs during
power-up and power-down.
open-circuit. The devices have two supply inputs (V
DDA
and V ) that independently set the logic levels on either
DDB
side of the device. V
and V
are referenced to GNDA
DDA
DDB
and GNDB, respectively. The MAX22444-MAX22446 also
Table 3. MAX2244_B/C/E/F Output Behavior During Undervoltage Conditions
V
V
V
ENA
ENB
V
V
OUTB
IN_
DDA
DDB
OUTA
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
High
Hi-Z
High
Hi-Z
1
Powered
Powered
Powered
Powered
Low
Low
0
X
X
Hi-Z
Hi-Z
Default
Hi-Z
Default
Hi-Z
Undervoltage
Powered
Powered
Default
Hi-Z
Default
Hi-Z
Undervoltage
Maxim Integrated
│ 22
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Table 4. MAX22445R/S/U/V Output Behavior During Undervoltage Conditions
V
V
V
ENA
ENB
V
V
OUTB
IN_
DDA
DDB
OUTA
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
High
Hi-Z
High
Hi-Z
1
Powered
Powered
Powered
Powered
Low
Low
0
X
X
Hi-Z
Hi-Z
Default
Hi-Z
Default
Hi-Z
Undervoltage
Powered
Powered
Default
Hi-Z
Default
Hi-Z
Undervoltage
Table 5. MAX2244_M/N Output Behavior During Undervoltage Conditions
V
V
V
DEFA = DEFB
V
V
OUTB
IN_
DDA
DDB
OUTA
1
0
1
0
1
0
1
0
High
High
High
High
1
Powered
Powered
Powered
Powered
Low
Low
0
X
X
Low
Low
Default (High)
Default (Low)
Default (High)
Default (Low)
Default (High)
Default (Low)
Default (High)
Default (Low)
Undervoltage
Powered
Powered
Undervoltage
MAX2244_B/C/M/N/R/S
INPUTS SET TO HIGH
MAX2244_E/F/M/N/U/V
INPUTS SET TO HIGH
fig05
fig06
MAX2244_M/N, DEFAULT SET TO HIGH
MAX2244_M/N, DEFAULT SET TO LOW
VDDA
VDDA
VDDB
VDDB
2V/div
2V/div
OUT_A
OUT_A
OUT_B
OUT_B
200µs/div
200µs/div
Figure 5. Undervoltage Lockout Behavior (MAX2244_ High)
Figure 6. Undervoltage Lockout Behavior (MAX2244_ High)
Maxim Integrated
│ 23
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
MAX2244_B/C/M/N/R/S
INPUTS SET TO LOW
MAX2244_E/FM/N//U/V
INPUTS SET TO LOW
fig07
fig08
MAX2244_M/N, DEFAULT SET TO HIGH
VDDA
MAX2244_M/N, DEFAULT SET TO LOW
VDDA
VDDB
VDDB
2V/div
2V/div
OUT_A
OUT_A
OUT_B
OUT_B
200µs/div
200µs/div
Figure 7. Undervoltage Lockout Behavior (MAX2244_ Low)
Figure 8. Undervoltage Lockout Behavior (MAX2244_ Low)
● Keep the input/output traces as short as possible. To
Selectable Output Default (DEFA, DEFB)
(MAX2244_M/N Only)
keep signal paths low-inductance, avoid using vias.
The default is the state the output assumes when the
input is not powered or if the input is open circuit. The
MAX2244_M/N feature user-selectable default-high or
default-low outputs. Set both DEFA and DEFB high to set
all channels to default-high, or set both DEFA and DEFB
low to set all channels to default-low.
● Have a solid ground plane underneath the high-
speed signal layer.
● Keep the area underneath the MAX22444-MAX22446
free from ground and signal planes. Any galvanic or
metallic connection between the Side A and Side B
defeats the isolation.
Ensure the logic state (high or low) of DEFA is the same
as that for DEFB. Do not toggle DEFA or DEFB during
normal operation.
Calculating Power Dissipation
The required current for a given supply (V
or V
)
DDB
DDA
can be estimated by summing the current required for
each channel. The supply current for a channel depends
on whether the channel is an input or an output, the channel’s
data rate, and the capacitive or resistive load if it is an output.
The typical current for an input or output at any data rate
can be estimated from the graphs in Figure 9 and Figure
10. Please note that the data in Figure 9 and Figure 10
are extrapolated from the supply current measurements in
a typical operating condition.
Applications Information
Power-Supply Sequencing
The MAX22444-MAX22446 do not require special power
supply sequencing. The logic levels are set independently
on either side by V
and V
. Each supply can be
DDA
DDB
present over the entire specified range regardless of the
level or presence of the other supply.
The total current for a single channel is the sum of the
“no load” current (shown in Figure 9 and Figure 10) which
is a function of Voltage and Data Rate, and the “load
current,” which depends on the type of load. Current into
a capacitive load is a function of the load capacitance, the
switching frequency, and the supply voltage.
Power-Supply Decoupling
To reduce ripple and the chance of introducing data
errors, bypass V
and V
with 0.1μF low-ESR
DDA
DDB
ceramic capacitors to GNDA and GNDB, respectively.
Place the bypass capacitors as close to the power supply
input pins as possible.
I
= C × f
× V
CL
L
SW DD
Layout Considerations
where
is the current required to drive the capacitive load.
The PCB designer should follow some critical recom-
mendations in order to get the best performance from the
design.
I
CL
C is the load capacitance on the isolator’s output pin.
L
Maxim Integrated
│ 24
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
f
is the switching frequency (bits per second / 2).
● Channel 4 is an output channel operating at 2.5V and
SW
100Mbps, consuming 0.77mA, estimated from Figure 10.
V
DD
is the supply voltage on the output side of the isolator.
● I on channel 4 for 15pF capacitor at 2.5V and
CL
Current into a resistive load depends on the load resistance,
the supply voltage and the average duty cycle of the data
waveform. The DC load current can be conservatively
estimated by assuming the output is always high.
100Mbps is 1.875mA.
Total current for side A = 0.33 + 0.14 × 2 + 0.77 +
1.875 = 3.255mA, typical
I
= V
÷ R
V
must supply:
DDB
RL
DD
L
where
is the current required to drive the resistive load.
● Channel 1 is an output channel operating at 3.3V and
20Mbps, consuming 0.40mA, estimated from Figure 10.
I
RL
● Channel 2 and 3 are output channels operating at
3.3V with DC signal, consuming 0.27mA, estimated
from Figure 10.
V
is the supply voltage on the output side of the isolator.
DD
R is the load resistance on the isolator’s output pin.
L
Example (shown in Figure 11): A MAX22445 is operating
● Channel 4 is an input channel operating at 3.3V and
with V
= 2.5V, V
= 3.3V, channel 1 operating at
DDA
DDB
100Mbps, consuming 1.11mA, estimated from Figure 9.
20Mbps with a 10pF capacitive load, channel 2 held high
with a 10kΩ resistive load, and channel 4 operating at
100Mbps with a 15pF capacitive load. Channel 3 is not in
use and the resistive load is negligible since the isolator
is driving a CMOS input. Refer to Table 6 and Table 7 for
● I on channel 1 for 10pF capacitor at 3.3V and
CL
20Mbps is 0.33mA.
● I on channel 2 for 10kΩ resistor held at 3.3V is
RL
0.33mA.
V
and V
supply current calculation worksheets.
DDA
DDB
Total current for side B = 0.40 + 0.27 × 2 + 1.11 + 0.33
+ 0.33 = 2.71mA, typical
V
DDA
must supply:
● Channel 1 is an input channel operating at 2.5V and
20Mbps, consuming 0.33mA, estimated from Figure 9.
● Channel 2 and 3 are input channels operating at
2.5V with DC signal, consuming 0.14mA, estimated
from Figure 9.
Table 6. Side A Supply Current Calculation Worksheet
SIDE A
V
= 2.5V
DDA
IN/
OUT
IN
Data Rate
(Mbps)
20
“No Load” Current
Load Current
(mA)
Channel
Load Type
Load
(mA)
1
2
3
4
0.33
IN
IN
0
0
0.14
0.14
0.77
OUT
100
Capacitive
15pF
Total: 3.26mA
2.5V x 50MHz x 15pF = 1.875mA
Table 7. Side B Supply Current Calculation Worksheet
SIDE B
V
= 3.3V
DDB
IN/
OUT
Data Rate
(Mbps)
“No Load” Current
(mA)
Load Current
(mA)
Channel
Load Type
Load
1
2
3
4
OUT
OUT
OUT
IN
20
0
Capacitive
Resistive
10pF
0.40
0.27
0.27
1.11
3.3V x 10MHz x 10pF = 0.33mA
10kΩ
3.3V / 10kΩ = 0.33mA
0
100
Total: 2.71mA
Maxim Integrated
│ 25
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
SUPPLY CURRENT PER OUTPUT CHANNEL
SUPPLY CURRENT PER INPUT CHANNEL
vs. DATA RATE
vs. DATA RATE
fig10
fig09
3
2.5
2
2.5
2
VDDB = 1.8V
VDDB = 2.5V
VDDB = 3.3V
VDDB = 5.0V
CL = 0pF
1.5
1
1.5
1
VDDA = 1.8V
VDDA = 2.5V
VDDA = 3.3V
VDDA = 5.0V
0.5
0
0.5
0
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
0
25
50
75 100 125 150 175 200
DATA RATE (Mbps)
Figure 10. Supply Current Per Output Channel (Estimated)
Figure 9. Supply Current Per Input Channel (Estimated)
2.5V
3.3V
V
V
DDB
DDA
MAX22445C/F
ENB
20Mbps
20Mbps
IN1
IN2
OUT1
10pF
2.5V
OUT2
OUT3
10kΩ
IN3
100Mbps
100Mbps
IN4
OUT4
15pF
ENA
GNDB
GNDA
Figure 11. Example Circuit for Supply Current Calculation
Maxim Integrated
│ 26
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Circuits
3.3V
5V
24V
VDDA
VDDB
5V VOUT
MAX22444B/C/E/F
0.1µF
0.1µF
ENB
IN1
OUT1
IN2
IN3
OUT2
OUT3
IN4
OUT4
GNDB
GNDA
3.3V
5V
VDDA
IN1
IN2
IN3
VDDB
MAX22444B/C/E/F
0.1µF
0.1µF
ENB
OUT1
OUT2
OUT3
OUT4
GNDB
IN4
GNDA
ISOLATED DIGITAL I/O
Maxim Integrated
│ 27
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Circuits (continued)
2.5V
3.3V
VDDA
VDDB
ENB
0.1µF
0.1µF
MAX22445R/S/U/V
CS
IN1
IN2
IN3
OUT1
CS
SCLK
SCLK
OUT2
ADC
MOSI
MISO
MOSI
MISO
OUT3
IN4
OUT4
ENA
GNDB
GNDA
ISOLATED SPI INTERFACE
Maxim Integrated
│ 28
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Typical Operating Circuits (continued)
2.5V
5V
VDDA
VDDB
MAX22446B/E
0.1µF
0.1µF
ENB
IN1
IN2
OUT1
T1IN
OUT2
T2IN
OUT3
OUT4
IN3
R1OUT
IN4
R2OUT
ENA
GNDA
GNDB
ISOLATED RS-232 INTERFACE
Maxim Integrated
│ 29
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Product Selector Guide
MAX2244 4
B
A W E +
CHANNEL
CONFIGURATION
4: 4/0
ACTIVE-HIGH EN_
MAX DATA RATE
ACTIVE-LOW ENA
MAX DATA RATE
DEVICE CONFIGURATION
5: 3/1
6: 2/2
25Mbps
200Mbps
25Mbps
200Mbps
MAXIMUM DATA RATE
DEFAULT-HIGH OUTPUT
DEFAULT-LOW OUTPUT
B
E
C
F
R
U
S
V
DEFAULT OUTPUT
ENA POLARITY
(SEE TABLE)
SELECTABLE DEFAULT
OUTPUT STATE
M
N
TEMP RANGE: -40º C TO +125º C
PACKAGE: W SOIC
PINS: 16
LEAD-FREE/ROHS COMPLIANT
Ordering Information
CHANNEL
CONFIGU-
RATION
DATA
RATE
(Mbps)
ISOLATION
VOLTAGE
TEMP
RANGE
(°C)
DEFAULT
OUTPUT
ENA
POLARITY
PART
PIN-PACKAGE
(kV
)
RMS
5
MAX22444BAWE+*
MAX22444CAWE+*
MAX22444EAWE+*
MAX22444FAWE+*
MAX22444MAWE+*
MAX22444NAWE+*
MAX22445BAWE+*
MAX22445CAWE+*
MAX22445EAWE+
MAX22445FAWE+
MAX22445MAWE+*
MAX22445NAWE+*
MAX22445RAWE+
MAX22445SAWE+*
MAX22445UAWE+*
MAX22445VAWE+*
MAX22446BAWE+*
MAX22446CAWE+
MAX22446EAWE+*
MAX22446FAWE+*
MAX22446MAWE+*
MAX22446NAWE+*
4/0
4/0
4/0
4/0
4/0
4/0
3/1
3/1
3/1
3/1
3/1
3/1
3/1
3/1
3/1
3/1
2/2
2/2
2/2
2/2
2/2
2/2
25
Default High Active-High
Default High Active-High
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
-40 to +125
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
16 Wide SOIC
200
25
5
Default Low
Default Low
Selectable
Selectable
Active-High
5
200
25
Active-High
5
—
—
5
200
25
5
Default High Active-High
Default High Active-High
5
200
25
5
Default Low
Default Low
Selectable
Selectable
Active-High
5
200
25
Active-High
5
—
—
5
200
25
5
Default High Active-Low
Default High Active-Low
5
200
25
5
Default Low
Default Low
Active-Low
Active-Low
5
200
25
5
Default High Active-High
Default High Active-High
5
200
25
5
Default Low
Default Low
Selectable
Selectable
Active-High
5
200
25
Active-High
5
—
—
5
200
5
*Future Product—Contact Maxim for availability.
Chip Information
PROCESS: BiCMOS
+Denotes a lead(Pb)-free/RoHS-compliant package.
Maxim Integrated
│ 30
www.maximintegrated.com
MAX22444–MAX22446
Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
1
2/18
Initial release
—
10/18
Removed Future Product designation from MAX22446CAWE+
30
Updated Safety Regulatory Approvals section and added a Safety Regulatory
Approvals table
2
3
1/19
3/19
1, 10
1, 10
Updated General Description and Table 1
Updated Safety Regulatory Approvals section and added a Safety Regulatory
Approvals table; Corrected typo in Revision History table
4
5
9/19
1, 10, 31
1, 10
Updated the General Description section and the Safety Regulatory Approvals
table
10/19
6
7
1/20
3/20
Removed future product designation from MAX2245EAWE+
Removed future product designation from MAX22445RAWE+
30
30
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2020 Maxim Integrated Products, Inc.
│ 31
相关型号：
MAX2244EBL
2400MHz - 2500MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER, 3 X 3 MM, UCSP-9
ROCHESTER
MAX2245EBL-T
2400MHz - 2500MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER, 3 X 3 MM, UCSP-9
ROCHESTER
©2020 ICPDF网 联系我们和版权申明