MAX33054EASA+ [MAXIM]
Interface Circuit,;
| 型号： | MAX33054EASA+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Interface Circuit, 电信 光电二极管 电信集成电路 |
| 文件： | 总14页 (文件大小：524K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EVALUATION KIT AVAILABLE
Click here for production status of specific part numbers.
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
General Description
Benefits and Features
The MAX33053E and MAX33054E are +3.3V CAN
(Control Area Network) transceivers with integrated
protection for industrial applications. These devices have
extended ±65V fault protection for equipment where
overvoltage protection is required. It also incorporates
high ±25kV ESD HBM and an input common mode range
(CMR) of ±25V, exceeding the ISO11898 specification
of -2V to +7V. This makes these parts well-suited for
applications that are in electrically noisy environments
where the ground planes are shifting relative to each
other. This family features a variety of options to address
common CAN application requirements; logic-level supply
● Integrated Protection Increases Robustness
• ±65V Fault Tolerant CANH and CANL
• ±25kV ESD HBM (Human Body Model)
• ±25V Extended Common Mode Input Range
(CMR)
• Transmitter Dominant Timeout Prevents Lockup
• Short-Circuit Protection
• Thermal Shutdown
● Family Provides Flexible Design Options
• Slow Slew Rate to minimize EMI
• Silent Mode S Disables Transmitter
• STBY Input for Low-Current Mode, Slow Slew Rate
• 1.62V to 3.6V Logic-Supply (V ) Range
input V for interfacing with 1.62V to 3.6V logic, low-
L
L
current standby mode, silent-mode to disable the
transmitter, and a slow slew rate to minimize EMI.
● High-Speed Operation of Up to 2Mbps
● Operating Temperature Range of -40°C to +125°C in
These devices operate at a high-speed CAN data rate,
allowing up to 2Mbps on small networks. Maximum speed
on large networks may be limited by the number of nodes
in a network, the type of cabling used, stub length, and
other factors. These transceivers include a dominant
timeout to prevent bus lockup caused by controller error
or by a fault on the TXD input. When TXD remains in the
8-pin SOIC Package
Ordering Information appears at end of data sheet.
dominant state (low) for longer than T
, the driver is
DOM
switched to the recessive state, releasing the bus. The
MAX33053E features an S pin where it enables and
disables the transmitter for applications where you need
the transceiver to receive only. The MAX33054E features
a STBY pin for 3 modes of operation; standby mode for
low-current consumption, normal high-speed mode, or
a slow slew rate mode when an external 26.1kΩ is
connected between ground and STBY pin.
The MAX33053E and MAX33054E are available in a
standard 8-pin SOIC package and operate over the -40°C
to +125°C temperature range.
Applications
● Programmable Logic
● Instrumentation
● Smart Grid Equipment
● Drone
Controller
● Industrial Automation
● Building Automation
● Motor Control
19-100340; Rev 0; 5/18
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Simplified Block Diagram
VDD
THERMAL
SHUTDOWN
VL
CANH
PROTECTION
CANL
TXD
DOMINANT
TIMEOUT
DRIVER
PROTECTION
STBY/S
RXD
WAKE-UP
MODE
CONTROL
WAKE-UP
FILTER
DRIVER
MUX
GND
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Absolute Maximum Ratings
DD
V
.......................................................................-0.3V to +4.0V
Multilayer Board
CANH or CANL (Continuous).................................-65V to +65V
(T = +70°C, derate 7.6mW/°C above +70°C.)........606.1mW
A
TXD, STBY, S.......................................................-0.3V to +4.0V
Operating Temperature Range............................-40°C to 125°C
Junction Temperature......................................................+150°C
Storage Temperature Range............................ -60°C to +150°C
Soldering Temperature (reflow).......................................+260°C
Lead Temperature (soldering, 10sec) .............................+300°C
RXD.............................................................-0.3V to (V + 0.3)V
L
VL............................................................. -0.3V to (V
+ 0.5V)
DD
Short-Circuit Duration................................................Continuous
Continuous Power Dissipation:
Single Layer Board
(T = +70°C, derate 5.9mW/°C above +70°C.)........470.6mW
A
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and 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
8 SOIC
PACKAGE CODE
S8+4
Outline Number
Land Pattern Number
21-0041
90-0096
THERMAL RESISTANCE, SINGLE-LAYER BOARD:
Junction-to-Ambient (θ
)
170
40
JA
Junction-to-Case (θ
)
JC
THERMAL RESISTANCE, FOUR-LAYER BOARD:
Junction-to-Ambient (θ
)
132
38
JA
Junction-to-Case (θ
)
JC
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.
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.
Maxim Integrated
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Electrical Characteristics
((V
= 3.0V to 3.6V, V = 1.62V to V , R = 60Ω, C = 15pF, T = T
to T
, unless otherwise specified. Typical values are at
DD
L
DD
L
L
A
MIN
MAX
V
= 3.3V, V = 1.8V, and T = +25C, unless otherwise specified.) (Note 1))
DD
L
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER
Supply Voltage
Logic Supply Voltage
V
3.0
3.6
V
V
DD
V
1.62
V
DD
8
L
No load
4.5
36
Dominant Supply Current
I
V
V
= 3.3V, TXD = 0V
= TXD = 3.3V
mA
DD_DOM
DD
R = 60Ω
50
2.7
+65
L
No load
3.6
Recessive Supply Current
I
mA
CANH shorted to
CANL
DD_REC
DD
3.6
Standby Supply Current
Silent Supply Current
I
STBY = logic high
S = logic-high
33
2.5
40
22
μA
STBY
I
mA
S
V = 3.3V
L
Logic Supply Current
I
RXD = open
μA
L
V = 1.8V
L
UVLO Threshold Rising
UVLO Threshold Falling
FAULT PROTECTION
V
V
V
rising
falling
V
V
UVLO_R
DD
V
1.6
UVLO_F
DD
Human Body Model (HBM)
±25
±15
±10
ESD Protection
(CANH, CANL to GND)
Air-Gap ISO 10605, IEC 61000-4-2
Contact ISO 10605, IEC 61000-4-2
kV
kV
ESD Protection (All Other
Pins)
Human Body Model (HBM)
CANH or CANL to GND
±4
Fault Protection Range
Thermal Shutdown
V
-65
V
FP
T
+160
+20
°C
SHDN
Thermal Shutdown
Hysteresis
T
°C
HYST
LOGIC INTERFACE (RXD, TXD, STBY, S)
Input High Voltage
V
0.7 x V
V
V
IH
L
2.25V ≤ V ≤ 3.6V
0.8
0.6
L
Input Low Voltage
V
IL
1.62V ≤ V ≤ 2.25V
L
TXD Input Pullup Resistance
R
100
100
250
kΩ
kΩ
PU_TXD
STBY, S Input Pullup
Resistance
R
250
0.4
PU_S
Output High Voltage
Output Low Voltage
CAN BUS DRIVER
V
Sourcing 4mA
Sinking 4mA
V - 0.5
L
V
V
OH
V
OL
CANH
CANL
CANH
CANL
2.25
0.5
1
V
Bus Output Voltage
(Dominant)
t < t
, TXD = 0V,
DD
DOM
V
V
V
O_DOM
R = 60Ω
1.25
2
L
Bus Output Voltage
(Recessive)
V
TXD = V , No load
L
O_REC
1
2
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Electrical Characteristics (continued)
((V
= 3.0V to 3.6V, V = 1.62V to V , R = 60Ω, C = 15pF, T = T
to T
, unless otherwise specified. Typical values are at
DD
L
DD
L
L
A
MIN
MAX
V
= 3.3V, V = 1.8V, and T = +25C, unless otherwise specified.) (Note 1))
DD
L
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
V
= 1KΩ, -5V ≤
CM
1.5
3
Bus Output Differential
Voltage (Dominant)
≤ V , Figure 1
V
TXD = 0V, R = 60 Ω
V
CM
DD
OD_DOM
L
R
= open
1.5
40
3
120
+10
+50
5
CM
Output Voltage Standby
V
V
= STBY = V , no load
mV
mV
O_STBY
TXD
L
R = 60 Ω
-10
-50
Bus Output Differential
Voltage (Recessive)
L
V
TXD = V
L
OD_REC
No load
I
TXD = 0V, CANH = -65V
TXD = 0V, CANL = +65V
2
2
SC_CANH
Short-Circuit Current
mA
I
5
SC_CANL
RECEIVER
Common Mode Input Range
V
CANH or CANL to GND, RXD output valid
CANH or CANL to GND, RXD output valid
-25
-12
+25
+12
V
V
CM
Common Mode Input Range
Standby Mode
V
CM_S
Input Differential Voltage
(Dominant)
V
-25V ≤ V
-25V ≤ V
-12V ≤ V
≤ 25V, TXD = V
≤ 25V, TXD = V
0.9
V
V
V
V
ID_DOM
CM
CM
CM
CM
L
L
Input Differential Voltage
(Recessive)
V
0.5
ID_REC
Standby Input Differential
Voltage (Dominant)
V
≤ +12V, TXD = V
1.15
ID_SDOM
L
Standby Input Differential
Voltage (Recessive)
V
-12V ≤ V
-25V ≤ V
≤ +12V, TXD = V
≤ 25V
0.45
ID_SREC
L
Input Differential Hysteresis
Input Resistance
V
90
mV
kΩ
kΩ
pF
ID_HYS
CM
L
R
TXD = V
TXD = V
10
20
50
IN
IN_DIFF
Differential Input Resistance
Input Capacitance
R
100
110
L
C
TXD = V (Note 2)
62
31
IN
L
Differential Input
Capacitance
C
TXD = V (Note 2)
55
pF
IN_DIFF
L
Input Leakage Current
SWITCHING
I
V
= V = 0V
CANH = CANL = 3.3V
100
220
μA
LKG
DD
L
Driver Rise Time
t
R = 60Ω, C = 100pF, R
is open, Figure 1
is open, Figure 1
13
21
ns
ns
ns
ns
R
L
L
CM
Driver Fall Time
t
R = 60Ω, C = 100pF, R
L L
F
CM
Slow Slew Driver Rise Time
Slow Slew Driver Fall Time
t
R = 60Ω, C = 100pF, R
is open, Figure 1
is open, Figure 1
315
140
SSR
L
LD
CM
t
R = 60Ω, C = 100pF, R
L LD
SSF
CM
R = 60Ω, Dominant-to Recessive and
Recessive-to-Dominant, Figure 2
L
TXD to RXD Loop Delay
t
85
43
40
30
140
60
ns
ns
ns
ns
LOOP
TXD Propagation Delay
(Recessive to Dominant)
R = 60Ω, C = 100pF, R
is open,
is open,
L
L
CM
t
ONTXD
V
= 3.3V, Figure 1
DD
TXD Propagation Delay
(Dominant to Recessive)
R = 60Ω, C = 100pF, R
L
L
CM
t
60
OFFTXD
V
= 3.3V, Figure 1
DD
RXD Propagation Delay
(Recessive to Dominant)
t
C = 15pF, V = 3.3V, Figure 3
DD
85
ONRXD
L
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Electrical Characteristics (continued)
((V
= 3.0V to 3.6V, V = 1.62V to V , R = 60Ω, C = 15pF, T = T
to T
, unless otherwise specified. Typical values are at
DD
L
DD
L
L
A
MIN
MAX
V
= 3.3V, V = 1.8V, and T = +25C, unless otherwise specified.) (Note 1))
DD
L
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
85
UNITS
RXD Propagation Delay
(Dominant to Recessive)
t
C = 15pF, Figure 3
40
ns
OFFRXD
L
TXD-Dominant Timeout
Wake-Up Time
t
Figure 4
Figure 5
1.3
4.3
ms
μs
ns
DOM
t
2.3
WAKE
Standby Propagation Delay
t
C = 15pF
300
PLH_STBY
L
Standby to Normal Mode
Delay
t
t
C = 15pF
20
30
μs
μs
D_SN
L
Normal to Standby Dominant
Delay
C = 15pF
D_NS
L
Note 1: All units are 100% production tested at T = +25°C. Specifications over temperature are guaranteed by design.
A
Note 2: Not production tested. Guaranteed at T = 25°C.
A
CANH
CANL
TXD
RL
CLD
R
CM
CM
V
DIFF
RL
CL
R
V
CM
RXD
CL
VL
50%
50%
TXD
0V
VL
0V
VL
tONTXD
tOFFTXD
50%
TXD
RXD
90%
10%
V
DIFF
0.9V
0.5V
tLOOP2
t
R
tF
50%
0V
tLOOP1
Figure 1. Transmitter Test Circuit and Timing Diagram
Figure 2. TXD to RXD Loop Delay
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
CANH
+
RXD
V
ID
TRANSMITTER
-
t
DOM
ENABLED
CL
CANL
VL
TXD
0V
V
L
0.9V
VID
0.5V
TRANSMITTER
DISABLED
0V
t
ONRXD
tOFFRXD
VCANH-VCANL
V
OH
RXD
50%
50%
VOL
Figure 3. RXD Timing Diagram
Figure 4. Transmitter-Dominant Timeout Timing Diagram
VL
CANH
CANL
STBY
RXD
RL
CLD
CL
t
WAKE
VL
RXD
0V
V
CANH-VCANL
Figure 5. Standby Receiver Propagation Delay
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Typical Operating Characteristics
V
= 3.3V, V = 1.8V, R = 60Ω, C = 15pF, T = +25°C, unless otherwise noted.
DD
L
L
L
A
VDD SUPPLY CURRENT
vs. DATA RATE
VDD SUPPLY CURRENT
vs. TEMPERATURE
toc02
toc01
20
40
35
30
25
20
15
10
5
18
16
RL = 60Ω, CLD = 100pF
14
TXD = 0V,
60Ω LOAD
12
10
8
6
4
2
0
NO LOAD
TXD = 0V,
NO LOAD
TXD = VL,
NO LOAD
0
1
10
100
1000
-40 -25 -10
5
20 35 50 65 80 95 110 125
DATA RATE (Kbps)
TEMPERATURE (°C)
CANH/CANL OUTPUT VOLTAGE
vs. TEMPERATURE
(CANH-CANL ) DIFFERENTIAL OUTPUT
vs . LOAD
toc04
toc03
3
2.5
2
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
CANH
1.5
1
CANL
0.5
0
40
60
80
100
120
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
LOAD RESISTANCE (Ω)
STANDBY CURRENT
vs. TEMPERATURE
SIL ENT CURRENT
vs. TEMPERATURE
toc05
toc11
45
40
35
30
25
20
15
10
5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
-40 -25 -10
5
20 35 50 65 80 95 110
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
TEMPERATURE (°C)
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Typical Operating Characteristics (continued)
V
= 3.3V, V = 1.8V, R = 60Ω, C = 15pF, T = +25°C, unless otherwise noted.
DD
L
L
L
A
SLEW RATE WITH
26.1KΩ TO GND ON STBY
SLEW RATE WITH
STBY GR OUNDED
toc06
toc07
VCANH
VCANL
1V/div
1V/div
VCANH
VCANL
1V/div
1V/div
VCANH-
CANL
VCANH-
CANL
2V/div
2V/div
2V/div
2V/div
VTXD
VTXD
2V/div
VRXD
200ns/div
1µs/div
SLOWRISE/FALL TIME
vs. DATA RATE
TXD PROPAGATION DELAY
vs. TEMPERATURE
toc08
toc09
300
250
200
150
100
50
70
60
50
40
30
20
10
0
RISE TIME
tOFFTXD
tONTXD
FALL TIME
500
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
0
1000
1500
2000
DATA RATE (Kbps)
TEMPERATURE (°C)
RXD PROPAGATION DELAY
vs. TEMPERATURE
toc10
60
58
56
54
52
50
48
46
44
42
40
tONRXD
tOFFRXD
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Pin Configuration
TOP VIEW
TOP VIEW
+
+
TXD
GND
VDD
RXD
1
2
3
4
8
7
6
5
S
TXD
GND
VDD
RXD
1
2
3
4
8
7
6
5
STBY
CANH
CANL
VL
CANH
CANL
VL
MAX33053E
MAX33054E
SOIC
SOIC
Pin Description
PIN
NAME
FUNCTION
Transmit Data Input. Drive TXD high to set the driver in the recessive state. Drive TXD low
MAX33053E MAX33054E
1
1
TXD
to set the driver in the dominant state. TXD has an internal pullup to V .
L
2
3
2
3
GND
VDD
Ground
Supply Voltage. Bypass V
to GND with a 0.1µF capacitor.
DD
Receive Data Output. RXD is high when CANH and CANL are in the recessive state. RXD
is low when CANH and CANL are in the dominant state. RXD is referenced to V .
4
5
4
5
RXD
VL
L
Logic-Level Voltage Supply Input. Bypass V to GND with a 0.1μF capacitor as close to the
L
device as possible.
CAN Bus-Line Low
CAN Bus-Line High
6
7
6
7
CANL
CANH
Standby Mode. A logic-high on STBY pin selects the standby mode. In standby mode, the
transceiver is not able to transmit data and the receiver is in low-power mode. A logic-low
on STBY pin puts the transceiver in normal operating mode. A 26.1kΩ external resistor can
be used to connect the STBY pin to ground for the slow slew rate.
—
8
8
STBY
Silent Mode Input. Drive S low to enable TXD and to operate in high-speed mode. Drive S
high to disable the transmitter. The receiver is active in normal operating mode.
—
S
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Transmitter Output Protection
Detailed Description
The MAX33053E and MAX33054E protect the transmitter
output stage against a short-circuit to a positive or
negative voltage by limiting the driver current. Thermal
shutdown further protects the devices from excessive
temperatures that may result from a short or high ambient
temperature. The transmitter returns to normal operation
once the temperature is lowered below the threshold.
The MAX33053E and MAX33054E are a family of fault-
protected CAN transceivers designed for harsh industrial
applications with a number of integrated robust protection
feature set. These devices provide a link between the
CAN protocol controller and the physical wires of the bus
lines in a control area network (CAN). They can be used
for DeviceNet™ applications as well.
The two CAN transceivers are fault-protected up to ±65V,
making it suitable for applications where overvoltage
protection is required. These devices are rated up to a
high ±25kV ESD of HBM (Human Body Model), suitable
for protection during the manufacturing process, and even
in the field where there is human interface for installation
and maintenance. In addition, a common mode voltage
of ±25V enables communication in noisy environments
where there are ground plane differences between
different systems due to close proximity of heavy
equipment machinery or operation from different
transformers. The devices' dominant timeout prevents
the bus from being blocked by a hung-up microcontroller,
and the outputs CANH and CANL are short-circuit,
current-limited, and are protected against excessive
power dissipation by thermal shutdown circuitry that
places the driver outputs in a high-impedance state.
Transmitter-Dominant Timeout
The devices feature a transmitter dominant timeout (t
that prevents erroneous CAN controllers from clamping
the bus to a dominant level by maintaining a continuous
low TXD signal. When TXD remains in the dominant state
)
DOM
(low) for greater than 2.5ms typical t
, the transmitter
DOM
is disabled, releasing the bus to a recessive state (Figure
4). After a dominant timeout fault, the transmitter is
re-enabled when receiving a rising edge at TXD. The
transmitter dominant timeout limits the minimum possible
data rate to 9kbps for standard CAN protocol.
Receiver
The receiver reads the differential input from the bus line
CANH and CANL and transfers this data as a single-
ended output RXD to the CAN controller. It consists of a
comparator that senses the difference V
= (CANH-
DIFF
CANL), with respect to an internal threshold of 0.7V. If
> 0.9V, a logic-low is present on RXD. If V
< 0.5V, a logic-high is present. The CANH and CANL
common-mode range is ±25V. RXD is a logic-high when
CANH and CANL are shorted or terminated and undriven.
Both devices can operate up to 2Mbps, while the
MAX33054E has an option to slow the slew rate to 8V/s
to minimize EMI, enabling the use of unshielded twisted
or parallel cable. The MAX33054E features a standby
mode where it shuts off the transmitter and reduces the
current to 45μA, typical. These CAN transceivers have a
V
DIFF
DIFF
Standby Mode (MAX33054E)
V pin where an integrated logic level translator enable
L
Drive STBY pin high for standby mode, which switches
the transmitter off and the receiver to a low current and
low-speed state. The supply current is reduced during
standby mode. The bus line is monitored by a low
differential comparator to detect and recognize a wakeup
event on the bus line. Once the comparator detects a
it to interface with low-voltage microcontrollers down to
1.8V ±10%.
±65V Fault Protection
These devices feature ±65V of fault protection. CANH and
CANL data lines are capable of withstanding a short from
-65V to +65V. This extended overvoltage range makes it
suitable for applications where accidental shorts to power
supply lines are possible due to human intervention.
dominant bus level greater than 2.5μs typical t , RXD
WAKE
pulls low. Drive the STBY low for normal operation.
Slow Slew Rate (MAX33054E)
Transmitter
Connect a 26.1kΩ resistor between ground and the STBY
pin. The STBY pin voltage should be between 0.1V to
0.6V to remain in slow slew rate. This will change the
MAX33054E with a slow slew rate of 8V/μs for rising edge
compared with normal mode at 180V/μs. For falling edge,
the slow slew rate is 20V/μs compared with normal mode
at 140V/μs.
The transmitter converts a single-ended input signal
(TXD) from the local CAN controller to differential outputs
for the bus lines CANH and CANL. The truth table for the
transmitter and receiver is provided in Table 1.
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Silent Mode (MAX33053E)
Applications Information
Drive S high to place the MAX33053E in silent mode. This
disables the transmitter regardless of the voltage level at
TXD. However, RXD is still active and monitors activity on
the bus line.
Reduced EMI and Reflections
In multidrop CAN applications, it is important to maintain
a single linear bus of uniform impedance that is properly
terminated at each end. A star, ring or tree configuration
should never be used. Any deviation from the end-to-end
wiring scheme creates a stub. High-speed data edges on
a stub can create reflections back down to the bus. These
reflections can cause data errors by eroding the noise
margin of the system.
Logic Compatibility
A separate input V allows the MAX33053E and
L
MAX33054E to communicate with logic systems down to
1.62V while operating up to a +3.6V supply. This provides
a reduced input voltage threshold to the TXD, STBY,
and S inputs, and provides a logic-high output at RXD
compatible with the microcontroller's supply rail. The logic
compatibility eliminates an external logic level translator and
Although stubs are unavoidable in a multidrop system,
care should be taken to keep these stubs as short as
possible, especially when operating with high data rates.
longer propagation delay due to level shifting. Connect V
L
to V
to operate with +3.3V logic systems.
DD
Table 1. Transmitter and Receiver Truth Table (When Not Connected to the Bus)
TXD LOW
TIME
STBY
TXD
CANH
CANL
BUS STATE
RXD
LOW
LOW
LOW
LOW
LOW
HIGH
< t
HIGH
LOW
DOMINANT
RECESSIVE
RECESSIVE
LOW
HIGH
HIGH
DOM
> t
DOM
X
V
V
/2
/2
V
V
/2
/2
DD
DD
DD
DD
X = Don’t care
Typical Application Circuits
Multidrop CAN Bus
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Ordering Information
PART NUMBER
MAX33053EASA+
MAX33054EASA+
PIN 8
TEMP RANGE
-40°C to +125ºC
-40ºC to +125ºC
PIN-PACKAGE
8 SO
S (Silent)
STBY (Standby)
8 SO
+Denotes a lead(Pb)-free/RoHS-compliant package.
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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25KV ESD
Revision History
REVISION REVISION
PAGES
DESCRIPTION
CHANGED
NUMBER
DATE
0
5/18
Initial release
—
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
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.
2018 Maxim Integrated Products, Inc.
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