ISL31470E_10 [INTERSIL]
Fault Protected, Extended Common Mode Range, RS-485/RS-422 Transceivers; 故障保护，扩展共模范围， RS - 485 / RS -422收发器
| 型号： | ISL31470E_10 |
| 厂家： | 
Intersil |
| 描述： | Fault Protected, Extended Common Mode Range, RS-485/RS-422 Transceivers |
| 文件： | 总21页 (文件大小：564K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Fault Protected, Extended Common Mode Range,
RS-485/RS-422 Transceivers
ISL31470E, ISL31472E, ISL31475E, ISL31478E
The ISL31470E, ISL31472E, ISL31475E, ISL31478E are
fault protected, extended common mode range
Features
• Fault Protected RS-485 Bus Pins. . . . . . .up to ±60V
differential transceivers that exceed the RS-485 and
RS-422 standards for balanced communication. The
RS-485 bus pins (driver outputs and receiver inputs)
are protected against overvoltages up to ±60V.
Additionally, these transceivers operate in environments
with common mode voltages up to ±15V (exceeds the
RS-485 requirement), making this RS-485 family one
of the more robust on the market.
• Extended Common Mode Range . . . . . . . . . . .±15V
Larger Than Required for RS-485
• 1/4 Unit Load for up to 128 Devices on the Bus
• High Transient Over Voltage Tolerance . . . . . .±80V
• Full Fail-safe (Open, Short, Terminated) RS-485
Receivers
• High Rx I
for Opto-Couplers in Isolated Designs
OL
Transmitters deliver an exceptional 2.5V (typical)
differential output voltage into the RS-485 specified 54Ω
load. This yields better noise immunity than standard
RS-485 ICs, or allows up to six 120Ω terminations in star
topologies.
• Hot Plug Circuitry - Tx and Rx Outputs Remain
Three-State During Power-up/Power-down
• Choice of RS-485 Data Rates . . . .250kbps to 15Mbps
• Low Quiescent Supply Current . . . . . . . . . . 2.3mA
Receiver (Rx) inputs feature a “Full Fail-Safe” design
which ensures a logic high Rx output if Rx inputs are
floating, shorted, or on a terminated but undriven (idle)
bus. Rx outputs feature high drive levels - typically
Ultra Low Shutdown Supply Current . . . . . . . 10μA
• Pb-Free (RoHS Compliant)
Applications
15mA @ V
isolated interfaces).
= 1V (to ease the design of opto-coupled
OL
• Utility Meters/Automated Meter Reading Systems
• High Node Count Systems
Half duplex (Rx inputs and Tx outputs multiplexed
together) and full duplex pinouts are available. See Table
1 on page 2 for key features and configurations by device
number.
• PROFIBUS™ and Field Bus Networks, and Factory
Automation
• Security Camera Networks
• Building Lighting and Environmental Control Systems
• Industrial/Process Control Networks
For an RS-485 family with a ±25V extended common
mode range, please see the ISL31490E and ISL31480E
data sheets.
Exceptional Rx Operates at
>15Mbps Even with ±15V
Common Mode Voltage
Transceivers Deliver Superior
Common Mode Range vs
Standard RS-485 Devices
20
15
12
VID = ±1V
B
15
A
10
5
0
-7
RO
0
-15
-5
STANDARD RS-485
TRANSCEIVER
ISL3147xE
TIME (20ns/DIV)
June 17, 2010
FN7639.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2010 All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
ISL31470E, ISL31472E, ISL31475E, ISL31478E
TABLE 1. SUMMARY OF FEATURES
HALF/FULL DATA RATE SLEW-RATE
EN
HOT
QUIESCENT LOW POWER
PIN
PART NUMBER
ISL31470E
DUPLEX
(Mbps)
0.25
0.25
1
LIMITED?
PINS?
PLUG?
I
(mA)
SHDN?
COUNT
CC
Full
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
2.3
Yes
14
8
ISL31472E
Half
Yes
2.3
2.3
2.3
Yes
ISL31475E
Half
Yes
Yes
8
ISL31478E
Half
15
No
Yes
8
Ordering Information
PART NUMBER
(Note 3)
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL31470EIBZ (Note 1)
ISL31472EIBZ (Note 1)
ISL31472EIPZ (Note 2)
ISL31475EIBZ (Note 1)
ISL31478EIBZ (Note 1)
NOTES:
ISL31470 EIBZ
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
14 Ld SOIC
M14.15
31472 EIBZ
31472 EIPZ
31475 EIBZ
31478 EIBZ
8 Ld SOIC
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC
M8.15
E8.3
M8.15
M8.15
1. Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. Pb-free PDIPs can be used for through-hole wave solder processing only. They are not intended for use in Reflow solder
processing applications.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both
SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4. For Moisture Sensitivity Level (MSL), please see device information pages for ISL31470E, ISL31472E, ISL31475E, ISL31478E.
For more information on MSL please see techbrief TB363.
Pin Configurations
ISL31472E, ISL31475E, ISL31478E
(8 LD SOIC, 8 LD PDIP)
TOP VIEW
ISL31470E
(14 LD SOIC)
TOP VIEW
NC 1
14 V
13 V
12 A
11 B
10 Z
9 Y
RO
RE
DE
DI
1
2
3
4
8
7
6
5
V
CC
CC
R
D
RO 2
RE 3
B/Z
A/Y
GND
CC
R
D
DE 4
DI 5
GND 6
GND 7
8 NC
FN7639.0
June 17, 2010
2
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Truth Tables
TRANSMITTING
RECEIVING
INPUTS
DE
INPUTS
OUTPUTS
OUTPUT
RE
X
DE
1
DI
1
Z
0
1
Y
1
RE
DE
Half Duplex Full Duplex
A-B
RO
0
0
0
0
0
0
X
X
X
≥ -0.01V
≤ -0.2V
1
0
1
X
1
0
0
0
0
X
High-Z
High-Z
High-Z*
Inputs
1
0
X
High-Z*
Open/Shorted
NOTE: *Low Power Shutdown Mode (see Note 13, page 9).
1
1
0
1
0
1
X
X
High-Z*
High-Z
NOTE: *Low Power Shutdown Mode (see Note 13, page 9).
Pin Descriptions
PIN
8 LD 14 LD
NAME PIN # PIN #
FUNCTION
RO
RE
DE
DI
1
2
3
4
2
3
4
5
Receiver output: If A-B ≥ -10mV, RO is high; If A-B ≤ -200mV, RO is low; RO = High if A and B are
unconnected (floating), shorted together, or connected to an undriven, terminated bus.
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. Internally
pulled low.
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high
impedance when DE is low. Internally pulled high.
Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y
high and output Z low.
GND
A/Y
5
6
6, 7 Ground connection.
-
±60V Fault Protected, RS-485/RS-422 level, non-inverting receiver input and non-inverting driver
output. Pin is an input if DE = 0; pin is an output if DE = 1.
B/Z
7
-
±60V Fault Protected, RS-485/RS-422 level, inverting receiver input and inverting driver output. Pin is
an input if DE = 0; pin is an output if DE = 1.
A
B
Y
Z
-
-
12
11
9
±60V Fault Protected, RS-485/RS-422 level, non-inverting receiver input.
±60V Fault Protected, RS-485/RS-422 level, inverting receiver input.
±60V Fault Protected, RS-485/RS-422 level, non-inverting driver output.
±60V Fault Protected, RS-485/RS-422 level, inverting driver output.
-
-
10
V
8
-
13, 14 System power supply input (4.5V to 5.5V).
1, 8 No Internal Connection.
CC
NC
FN7639.0
June 17, 2010
3
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Typical Operating Circuits
ISL31472E, ISL31475E, ISL31478E
+5V
+5V
8
+
+
0.1μF
0.1μF
8
V
V
CC
CC
RO
RE
1
2
4
DI
R
D
R
R
3
2
B/Z
A/Y
7
6
T
7
6
B/Z
A/Y
DE
RE
T
3 DE
DI
4
1
RO
R
D
GND
5
GND
5
ISL31470E
+5V
+5V
+
+
0.1μF
0.1μF
13, 14
13, 14
V
V
CC
CC
R
9
A 12
Y
Z
T
DI
2
5
RO
R
11
10
B
D
3
4
RE
DE
4
3
DE
RE
R
10
9
11
12
Z
Y
B
A
T
RO
5 DI
2
R
D
GND
6, 7
GND
6, 7
FN7639.0
June 17, 2010
4
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Absolute Maximum Ratings
Thermal Information
V
to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Thermal Resistance (Typical)
θ
(°C/W) θ (°C/W)
CC
JA JC
Input Voltages
DI, DE, RE . . . . . . . . . . . . . . . . . . -0.3V to (V
Input/Output Voltages
8 Ld PDIP* Package (Notes 5, 7) . . .
8 Ld SOIC Package (Notes 6, 7). . . .
14 Ld SOIC Package (Notes 6, 7). . .
Maximum Junction Temperature (Plastic Package) . . . .+150°C
Maximum Storage Temperature Range . . . . -65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
*Pb-free PDIPs can be used for through-hole wave solder
processing only. They are not intended for use in Reflow
solder processing applications.
105
116
88
60
47
39
+ 0.3V)
CC
A/Y, B/Z, A, B, Y, Z . . . . . . . . . . . . . . . . . . . . . . . . ±60V
A/Y, B/Z, A, B, Y, Z
(Transient Pulse Through 100Ω, Note 17) . . . . . . . ±80V
RO . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to (V
Short Circuit Duration
Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
ESD Rating . . . . . . . . . . . . . . . . . . see Specification Table
Latch-up (per JESD78, Level 2, Class A) . . . . . . . . . +125°C
+0.3V)
CC
Recommended Operating Conditions
Supply Voltage (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
CC
Temperature Range . . . . . . . . . . . . . . . . . .-40°C to +85°C
Bus Pin Common Mode Voltage Range . . . . . . -15V to +15V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact
product reliability and result in failures not covered by warranty.
NOTES:
5. θ is measured with the component mounted on a low effective thermal conductivity test board in free air.
JA
6. θ is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief
JA
TB379 for details.
7. For θ , the “case temp” location is taken at the package top center.
JC
Electrical Specifications Test Conditions: V = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
= 5V,
CC
CC
T = +25°C (Note 8). Boldface limits apply over the operating temperature range,
A
-40°C to +85°C.
TEMP
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
(°C) (Note 16) TYP (Note 16) UNITS
DC CHARACTERISTICS
Driver Differential V
(No load)
V
V
Full
-
-
V
V
V
OUT
OD1
CC
Driver Differential V
(Loaded, Figure 1A)
R = 100Ω (RS-422)
Full
Full
Full
Full
2.4
1.5
2.0
0.8
3.2
2.5
2.5
1.3
-
V
V
OUT
OD2
L
R = 54Ω (RS-485)
L
CC
-
R = 54Ω (PROFIBUS, V
≥ 5V)
L
CC
R = 21Ω (Six 120Ω terminations for
-
V
V
L
Star Configurations, V
≥ 4.75V)
CC
Change in Magnitude of Driver
Differential V for
ΔV
R = 54Ω or 100Ω (Figure 1A)
Full
-
-
0.2
OD
L
OUT
Complementary Output States
Driver Differential V
OUT
Common Mode Load
(Figure 1B)
with
V
R = 60Ω, -7V ≤ V
CM
≤ 12V
≤ 15V
Full
Full
1.5
1.7
2.1
2.3
V
V
v
OD3
L
CC
R = 60Ω, -15V ≤ V
CM
-
L
CC
(V
≥ 4.75V)
Driver Common-Mode V
(Figure 1A)
V
R = 54Ω or 100Ω
Full
Full
-1
-
-
3
V
V
OUT
OC
L
Change in Magnitude of Driver
Common-Mode V for
ΔV
R = 54Ω or 100Ω (Figure 1A)
-
0.2
OC
L
OUT
Complementary Output States
Driver Short-Circuit Current
I
DE = V , -15V ≤ V ≤ 15V (Note 10) Full
CC
-250
-83
-
-
-
250
83
mA
mA
mA
OSD
O
I
I
At First Fold-back, 22V ≤ V ≤ -22V
Full
OSD1
OSD2
O
At Second Fold-back, 35V ≤ V ≤ -35V Full
-13
13
O
FN7639.0
June 17, 2010
5
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Electrical Specifications Test Conditions: V = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
= 5V,
CC
CC
T = +25°C (Note 8). Boldface limits apply over the operating temperature range,
A
-40°C to +85°C. (Continued)
TEMP
MIN
MAX
PARAMETER
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
SYMBOL
TEST CONDITIONS
DE, DI, RE
(°C) (Note 16) TYP (Note 16) UNITS
V
Full
Full
Full
Full
Full
Full
Full
Full
2.5
-
-
-
-
0.8
1
V
V
IH
V
DE, DI, RE
DI
IL
I
-1
-
μA
μA
μA
μA
μA
mA
IN1
IN2
DE, RE
DE = 0V,
-15
-
6
15
250
-
Input/Output Current
(A/Y, B/Z)
I
V
V
V
V
= 12V
110
-75
±240
±0.5
IN
IN
IN
IN
V
= 0V or 5.5V
CC
= -7V
-200
-800
-6
= ±15V
= ±60V
800
6
(Note 18)
Input Current (A, B)
(Full Duplex Versions Only)
I
V
= 0V or 5.5V V = 12V
Full
Full
Full
Full
-
90
125
-
μA
μA
μA
mA
IN3
CC
IN
V
V
V
= -7V
-100
-500
-3
-70
IN
IN
IN
= ±15V
= ±60V
±200
±0.4
500
3
(Note 18)
Output Leakage Current (Y, Z)
(Full Duplex Versions Only)
I
RE=0V,DE = 0V, V = 12V
Full
Full
Full
Full
-
20
-5
200
-
μA
μA
μA
mA
OZD
IN
V
= 0V or 5.5V
CC
V
V
V
= -7V
-100
-500
-3
IN
IN
IN
= ±15V
= ±60V
±40
±0.1
500
3
(Note 18)
Receiver Differential Threshold
Voltage
V
-15V ≤ V
-15V ≤ V
≤ 15V
≤ 15V
Full
-200
-100
25
-10
mV
TH
CM
Receiver Input Hysteresis
ΔV
+25
Full
Full
Full
Full
Full
-
-
-
mV
V
TH
CM
Receiver Output High Voltage
V
I
I
I
= -2mA, V = -10mV
ID
V
- 0.5 4.75
OH
O
O
O
CC
= -8mA, V = -10mV
ID
2.8
4.2
0.27
22
-
V
Receiver Output Low Voltage
Receiver Output Low Current
V
= 6mA, V = -200mV
ID
-
0.4
-
V
OL
I
V
= 1V, V = -200mV
ID
15
-1
mA
μA
OL
O
Three-State (High Impedance)
Receiver Output Current
I
0V ≤ V ≤ V
0.01
1
OZR
O
CC
Receiver Short-Circuit Current
I
0V ≤ V ≤ V
Full
±12
-
±110
mA
OSR
O
CC
SUPPLY CURRENT
No-Load Supply Current
(Note 9)
I
DE = V , RE = 0V or V
DI = 0V or V
CC
,
Full
Full
-
-
2.3
10
4.5
50
mA
CC
CC CC
Shutdown Supply Current
ESD PERFORMANCE
All Pins
I
DE = 0V, RE = V , DI = 0V or V
CC
μA
SHDN
CC
Human Body Model
(Tested per JESD22-A114E)
+25
+25
-
-
±2
-
-
kV
V
Machine Model
±700
(Tested per JESD22-A115-A)
DRIVER SWITCHING CHARACTERISTICS (250kbps Versions; ISL31470E and ISL31472E)
Driver Differential Output Delay t
Driver Differential Output Skew
t
R
R
= 54Ω, C = 50pF (Figure 2)
Full
Full
-
-
320
6
450
30
ns
ns
PLH, PHL
D
D
t
= 54Ω, C = 50pF (Figure 2)
D
SKEW
D
FN7639.0
June 17, 2010
6
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Electrical Specifications Test Conditions: V = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
= 5V,
CC
CC
T = +25°C (Note 8). Boldface limits apply over the operating temperature range,
A
-40°C to +85°C. (Continued)
TEMP
MIN
MAX
PARAMETER
SYMBOL
t , t
TEST CONDITIONS
(°C) (Note 16) TYP (Note 16) UNITS
Driver Differential Rise or
Fall Time
R
C
= 54Ω, C = 50pF (Figure 2)
Full
400
650
1200
ns
R
F
D
D
Maximum Data Rate
f
= 820pF (Figure 4)
Full
Full
Full
Full
0.25
1.5
-
Mbps
ns
MAX
D
Driver Enable to Output High
Driver Enable to Output Low
t
SW = GND (Figure 3), (Note 11)
-
-
-
-
-
-
1200
1200
120
ZH
t
SW = V
SW = V
(Figure 3), (Note 11)
(Figure 3)
ns
ZL
LZ
CC
Driver Disable from Output
Low
t
ns
CC
Driver Disable from Output
High
t
SW = GND (Figure 3)
Full
-
-
120
ns
HZ
Time to Shutdown
t
(Note 13)
Full
Full
60
160
-
600
ns
ns
SHDN
Driver Enable from Shutdown
to Output High
t
SW = GND (Figure 3), (Notes 13, 14)
-
2500
ZH(SHDN)
Driver Enable from Shutdown
to Output Low
t
SW = V
CC
(Figure 3), (Notes 13, 14)
Full
Full
-
-
-
2500
125
ns
ns
ZL(SHDN)
DRIVER SWITCHING CHARACTERISTICS (1Mbps Versions; ISL31475E)
Driver Differential Output
Delay
t
t
R
= 54Ω, C = 50pF (Figure 2)
70
PLH, PHL
D
D
Driver Differential Output Skew
t
R
R
= 54Ω, C = 50pF (Figure 2)
Full
Full
-
3
15
ns
ns
SKEW
D
D
Driver Differential Rise or Fall
Time
t , t
= 54Ω, C = 50pF (Figure 2)
70
230
300
R
F
D
D
Maximum Data Rate
f
C
= 820pF (Figure 4)
Full
Full
Full
Full
1
-
4
-
-
-
-
Mbps
ns
MAX
D
Driver Enable to Output High
Driver Enable to Output Low
t
SW = GND (Figure 3), (Note 11)
350
300
120
ZH
t
SW = V
SW = V
(Figure 3), (Note 11)
(Figure 3)
-
ns
ZL
LZ
CC
Driver Disable from Output
Low
t
-
ns
CC
Driver Disable from Output
High
t
SW = GND (Figure 3)
Full
-
-
120
ns
HZ
Time to Shutdown
t
(Note 13)
Full
Full
60
160
-
600
ns
ns
SHDN
Driver Enable from Shutdown
to Output High
t
SW = GND (Figure 3), (Notes 13, 14)
-
2000
ZH(SHDN)
Driver Enable from Shutdown
to Output Low
t
SW = V
CC
(Figure 3), (Notes 13, 14)
Full
Full
-
-
-
2000
45
ns
ns
ZL(SHDN)
DRIVER SWITCHING CHARACTERISTICS (15Mbps Versions; ISL31478E)
Driver Differential Output
Delay
t
t
R
= 54Ω, C = 50pF (Figure 2)
21
PLH, PHL
D
D
Driver Differential Output Skew
t
R
R
= 54Ω, C = 50pF (Figure 2)
Full
Full
-
3
6
ns
ns
SKEW
D
D
Driver Differential Rise or Fall
Time
t , t
= 54Ω, C = 50pF (Figure 2)
5
17
30
R
F
D
D
Maximum Data Rate
f
C
= 470pF (Figure 4)
Full
Full
Full
Full
15
-
25
-
-
Mbps
ns
MAX
D
Driver Enable to Output High
Driver Enable to Output Low
t
SW = GND (Figure 3), (Note 11)
100
100
120
ZH
t
SW = V
SW = V
(Figure 3), (Note 11)
(Figure 3)
-
-
ns
ZL
LZ
CC
Driver Disable from Output
Low
t
-
-
ns
CC
FN7639.0
June 17, 2010
7
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Electrical Specifications Test Conditions: V = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
= 5V,
CC
CC
T = +25°C (Note 8). Boldface limits apply over the operating temperature range,
A
-40°C to +85°C. (Continued)
TEMP
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
SW = GND (Figure 3)
(°C) (Note 16) TYP (Note 16) UNITS
Driver Disable from Output
High
t
Full
-
-
120
ns
HZ
Time to Shutdown
t
(Note 13)
Full
Full
60
160
-
600
ns
ns
SHDN
Driver Enable from Shutdown
to Output High
t
SW = GND (Figure 3), (Notes 13, 14)
-
2000
ZH(SHDN)
Driver Enable from Shutdown
to Output Low
t
SW = V
CC
(Figure 3), (Notes 13, 14)
Full
-
-
2000
ns
ZL(SHDN)
RECEIVER SWITCHING CHARACTERISTICS (250kbps Versions; ISL31470E and ISL31472E)
Maximum Data Rate
f
(Figure 5)
(Figure 5)
(Figure 5)
Full
Full
Full
Full
0.25
5
200
4
-
Mbps
ns
MAX
Receiver Input to Output Delay t
, t
-
-
-
280
10
PLH PHL
Receiver Skew |t
PLH
- t
PHL
|
t
ns
SKD
Receiver Enable to Output Low
t
R = 1kΩ, C = 15pF, SW = V
CC
-
50
ns
ZL
L
L
(Figure 6), (Note 12)
Receiver Enable to Output High
t
R = 1kΩ, C = 15pF, SW = GND
(Figure 6), (Note 12)
Full
Full
Full
-
-
-
-
-
-
50
50
50
ns
ns
ns
ZH
L
L
Receiver Disable from Output
Low
t
R = 1kΩ, C = 15pF, SW = V
(Figure 6)
LZ
L
L
CC
Receiver Disable from Output
High
t
R = 1kΩ, C = 15pF, SW = GND
HZ
L
L
(Figure 6)
Time to Shutdown
t
(Note 13)
Full
Full
60
160
-
600
ns
ns
SHDN
Receiver Enable from
Shutdown to Output High
t
R = 1kΩ, C = 15pF, SW = GND
-
2000
ZH(SHDN)
L
L
(Figure 6), (Notes 13, 15)
R = 1kΩ, C = 15pF, SW = V
CC
Receiver Enable from
Shutdown to Output Low
t
Full
-
-
2000
ns
ZL(SHDN)
L
L
(Figure 6), (Notes 13, 15)
RECEIVER SWITCHING CHARACTERISTICS (1Mbps Versions; ISL31475E)
Maximum Data Rate
f
(Figure 5)
(Figure 5)
(Figure 5)
Full
Full
Full
Full
1
-
15
90
4
-
Mbps
ns
MAX
Receiver Input to Output Delay t
, t
150
10
PLH PHL
Receiver Skew |t
PLH
- t
PH
|
t
-
ns
SKD
Receiver Enable to Output Low
t
R = 1kΩ, C = 15pF, SW = V
CC
-
-
50
ns
ZL
L
L
(Figure 6), (Note 12)
Receiver Enable to Output High
t
R = 1kΩ, C = 15pF, SW = GND
(Figure 6), (Note 12)
Full
Full
Full
-
-
-
-
-
-
50
50
50
ns
ns
ns
ZH
L
L
Receiver Disable from Output
Low
t
R = 1kΩ, C = 15pF, SW = V
(Figure 6)
LZ
L
L
CC
Receiver Disable from Output
High
t
R = 1kΩ, C = 15pF, SW = GND
HZ
L
L
(Figure 6)
Time to Shutdown
t
(Note 13)
Full
Full
60
160
-
600
ns
ns
SHDN
Receiver Enable from
Shutdown to Output High
t
R = 1kΩ, C = 15pF, SW = GND
-
2000
ZH(SHDN)
L
L
(Figure 6), (Notes 13, 15)
R = 1kΩ, C = 15pF, SW = V
CC
Receiver Enable from
Shutdown to Output Low
t
Full
-
-
2000
ns
ZL(SHDN)
L
L
(Figure 6), (Notes 13, 15)
RECEIVER SWITCHING CHARACTERISTICS (15Mbps Versions; ISL31478E)
Maximum Data Rate
f
(Figure 5)
(Figure 5)
Full
Full
15
25
35
-
Mbps
ns
MAX
Receiver Input to Output Delay t
, t
-
70
PLH PHL
FN7639.0
June 17, 2010
8
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Electrical Specifications Test Conditions: V = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
= 5V,
CC
CC
T = +25°C (Note 8). Boldface limits apply over the operating temperature range,
A
-40°C to +85°C. (Continued)
TEMP
MIN
MAX
PARAMETER
Receiver Skew |t - t
SYMBOL
TEST CONDITIONS
(Figure 5)
R = 1kΩ, C = 15pF, SW = V
CC
(°C) (Note 16) TYP (Note 16) UNITS
|
t
Full
Full
-
-
4
-
10
50
ns
ns
PLH PHL
SKD
Receiver Enable to Output Low
t
ZL
L
L
(Figure 6), (Note 12)
Receiver Enable to Output High
t
R = 1kΩ, C = 15pF, SW = GND
(Figure 6), (Note 12)
Full
Full
Full
-
-
-
-
-
-
50
50
50
ns
ns
ns
ZH
L
L
Receiver Disable from Output
Low
t
R = 1kΩ, C = 15pF, SW = V
(Figure 6)
LZ
L
L
CC
Receiver Disable from Output
High
t
R = 1kΩ, C = 15pF, SW = GND
HZ
L
L
(Figure 6)
Time to Shutdown
t
(Note 13)
Full
Full
60
160
-
600
ns
ns
SHDN
Receiver Enable from
Shutdown to Output High
t
R = 1kΩ, C = 15pF, SW = GND
-
2000
ZH(SHDN)
L
L
(Figure 6), (Notes 13, 15)
R = 1kΩ, C = 15pF, SW = V
CC
Receiver Enable from
Shutdown to Output Low
t
Full
-
-
2000
ns
ZL(SHDN)
L
L
(Figure 6), (Notes 13, 15)
NOTES:
8. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground
unless otherwise specified.
9. Supply current specification is valid for loaded drivers when DE = 0V.
10. Applies to peak current. See “Typical Performance Curves” beginning on page 14 for more information.
11. Keep RE = 0 to prevent the device from entering SHDN.
12. The RE signal high time must be short enough (typically <100ns) to prevent the device from entering SHDN.
13. Transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 60ns, the parts
are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered
shutdown. See “Low Power Shutdown Mode” on page 14.
14. Keep RE = VCC, and set the DE signal low time >600ns to ensure that the device enters SHDN.
15. Set the RE signal high time >600ns to ensure that the device enters SHDN.
16. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established
by characterization and are not production tested.
17. Tested according to TIA/EIA-485-A, Section 4.2.6 (±80V for 15μs at a 1% duty cycle).
18. See “Caution” statement below the “Recommended Operating Conditions” section on page 5.
Test Circuits and Waveforms
R /2
L
R /2
375Ω
375Ω
L
DE
DI
DE
DI
V
V
CC
CC
Z
Y
Z
Y
V
CM
V
V
D
OD
D
OD
V
OC
V
R /2
L
R /2
OC
L
FIGURE 1B. V
AND V
WITH COMMON MODE LOAD
OC
FIGURE 1A. V
AND V
OC
OD
OD
FIGURE 1. DC DRIVER TEST CIRCUITS
FN7639.0
June 17, 2010
9
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Test Circuits and Waveforms(Continued)
3V
0V
DI
1.5V
1.5V
t
t
PHL
PLH
V
V
OH
OUT (Z)
OUT (Y)
OL
DE
DI
V
CC
Z
Y
+V
OD
C
R
D
D
D
90%
10%
90%
10%
DIFF OUT (Y - Z)
-V
OD
SIGNAL
GENERATOR
t
t
R
F
SKEW = |t
PLH
- t |
PHL
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2A. TEST CIRCUIT
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
DE
Z
Y
110Ω
V
DI
CC
D
GND
SW
SIGNAL
GENERATOR
C
L
3V
0V
DE
1.5V
1.5V
HZ
Note 13
C
L
t
, t
ZH ZH(SHDN)
t
PARAMETER OUTPUT
RE
X
DI
1/0
0/1
SW
(pF)
Note 13
OUTPUT HIGH
V
OH
V
- 0.5V
OH
t
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
GND
50
HZ
OUT (Y, Z)
2.3V
t
X
V
50
0V
LZ
CC
t
0 (Note 11) 1/0
0 (Note 11) 0/1
1 (Note 14) 1/0
1 (Note 14) 0/1
GND
100
100
100
100
ZH
t
, t
ZL ZL(SHDN)
t
LZ
Note 13
t
V
V
ZL
CC
CC
OUT (Y, Z)
2.3V
OUTPUT LOW
t
GND
ZH(SHDN)
V
+ 0.5V
OL
V
OL
t
V
ZL(SHDN)
CC
FIGURE 3A. TEST CIRCUIT
FIGURE 3B. MEASUREMENT POINTS
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
DE
DI
3V
V
CC
+
DI
Z
Y
V
54Ω
OD
0V
C
D
D
-
SIGNAL
GENERATOR
+V
OD
DIFF OUT (Y - Z)
0V
-V
OD
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. DRIVER DATA RATE
FN7639.0
June 17, 2010
10
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Test Circuits and Waveforms(Continued)
RE
B
A
750mV
15pF
B
RO
0V
0V
R
A
-750mV
t
t
PHL
SIGNAL
GENERATOR
SIGNAL
GENERATOR
PLH
V
CC
50%
50%
RO
0V
FIGURE 5A. TEST CIRCUIT
FIGURE 5B. MEASUREMENT POINTS
FIGURE 5. RECEIVER PROPAGATION DELAY AND DATA RATE
RE
B
A
1kΩ
V
CC
RO
R
GND
SW
Note 13
SIGNAL
15pF
3V
0V
GENERATOR
RE
, t
1.5V
1.5V
t
PARAMETER
DE
0
A
SW
GND
ZH ZH(SHDN)
Note 13
t
HZ
OUTPUT HIGH
V
OH
t
+1.5V
-1.5V
+1.5V
-1.5V
+1.5V
-1.5V
HZ
V
- 0.5V
OH
1.5V
RO
t
0
V
LZ
CC
0V
t
(Note 12)
(Note 12)
0
GND
ZH
t
, t
ZL ZL(SHDN)
t
LZ
t
0
V
CC
ZL
Note 13
RO
V
CC
t
(Note 15)
(Note 15)
0
GND
ZH(SHDN)
1.5V
OUTPUT LOW
V
+ 0.5V
OL
V
t
0
V
OL
ZL(SHDN)
CC
FIGURE 6A. TEST CIRCUIT
FIGURE 6B. MEASUREMENT POINTS
FIGURE 6. RECEIVER ENABLE AND DISABLE TIMES
FN7639.0
June 17, 2010
11
ISL31470E, ISL31472E, ISL31475E, ISL31478E
The Rx in the 250kbps and 1Mbps versions include noise
Application Information
filtering circuitry to reject high frequency signals. The
1Mbps version typically rejects pulses narrower than
50ns (equivalent to 20Mbps), while the 250kbps Rx
rejects pulses below 150ns (6.7Mbps).
RS-485 and RS-422 are differential (balanced) data
transmission standards used for long haul or noisy
environments. RS-422 is a subset of RS-485, so RS-485
transceivers are also RS-422 compliant. RS-422 is a
point-to-multipoint (multidrop) standard, which allows
only one driver and up to 10 (assuming one unit load
devices) receivers on each bus. RS-485 is a true
multipoint standard, which allows up to 32 one unit load
devices (any combination of drivers and receivers) on
each bus. To allow for multipoint operation, the RS-485
specification requires that drivers must handle bus
contention without sustaining any damage.
Driver (Tx) Features
The RS-485/RS-422 driver is a differential output device
that delivers at least 1.5V across a 54Ω load (RS-485),
and at least 2.4V across a 100Ω load (RS-422). The
drivers feature low propagation delay skew to maximize
bit width, and to minimize EMI, and all drivers are
three-statable via the active high DE input.
The 250kbps and 1Mbps driver outputs are slew rate
limited to minimize EMI, and to minimize reflections in
unterminated or improperly terminated networks.
Outputs of the ISL31478E drivers are not limited, thus,
faster output transition times allow data rates of at least
15Mbps.
Another important advantage of RS-485 is the extended
common mode range (CMR), which specifies that the
driver outputs and receiver inputs withstand signals that
range from +12V to -7V. RS-422 and RS-485 are
intended for runs as long as 4000’, thus the wide CMR is
necessary to handle ground potential differences, as well
as voltages induced in the cable by external fields.
High Overvoltage (Fault) Protection
Increases ruggedness
The ISL31470E, ISL31472E, ISL31475E, ISL31478E is a
family of ruggedized RS-485 transceivers that improves
on the RS-485 basic requirements, and therefore
increases system reliability. The CMR increases to ±15V,
while the RS-485 bus pins (receiver inputs and driver
outputs) include fault protection against voltages and
transients up to ±60V. Additionally, larger than required
The ±60V (referenced to the IC GND) fault protection on
the RS-485 pins, makes these transceivers some of the
most rugged on the market. This level of protection
makes the ISL31470E, ISL31472E, ISL31475E,
ISL31478E perfect for applications where power
(e.g., 24V and 48V supplies) must be routed in the
conduit with the data lines, or for outdoor applications
where large transients are likely to occur. When power is
routed with the data lines, even a momentary short
between the supply and data lines will destroy an
unprotected device. The ±60V fault levels of this family
are at least five times higher than the levels specified
for standard RS-485 ICs. The ISL31470E, ISL31472E,
ISL31475E, ISL31478E protection is active whether the
Tx is enabled or disabled, and even if the IC is powered
down.
differential output voltages (V ) increase noise
OD
immunity.
Receiver (Rx) Features
These devices utilize a differential input receiver for
maximum noise immunity and common mode rejection.
Input sensitivity is better than ±200mV, as required by
the RS-422 and RS-485 specifications.
Receiver input (load) current surpasses the RS-422
specification of 3mA, and is four times lower than the
RS-485 “Unit Load (UL)” requirement of 1mA maximum.
Thus, these products are known as “one-quarter UL”
transceivers, and there can be up to 128 of these devices
on a network while still complying with the RS-485
loading specification.
If transients or voltages (including overshoots and
ringing) greater than ±60V are possible, then additional
external protection is required.
Wide Common Mode Voltage (CMV)
Tolerance Improves Operating Range
RS-485 networks operating in industrial complexes, or
over long distances, are susceptible to large CMV
variations. Either of these operating environments may
suffer from large node-to-node ground potential
differences, or CMV pickup from external electromagnetic
sources, and devices with only the minimum required
+12V to -7V CMR may malfunction. The ISL31470E,
ISL31472E, ISL31475E, ISL31478E’s extended ±15V
CMR allows for operation in environments that would
overwhelm lesser transceivers. Additionally, the Rx will
not phase invert (erroneously change state) even with
CMVs of ±40V, or differential voltages as large as 40V.
The Rx functions with common mode voltages as great
as ±15V, making them ideal for industrial, or long
networks where induced voltages are a realistic concern.
All the receivers include a “full fail-safe” function that
guarantees a high level receiver output if the receiver
inputs are unconnected (floating), shorted together, or
connected to a terminated bus with all the transmitters
disabled (i.e., an idle bus).
Rx outputs feature high drive levels (typically 22mA @
V
= 1V) to ease the design of optically-coupled
OL
isolated interfaces.
Receivers easily meet the data rates supported by the
corresponding driver, and all receiver outputs are
three-statable via the active low RE input.
FN7639.0
June 17, 2010
12
ISL31470E, ISL31472E, ISL31475E, ISL31478E
High V
Flexibility
Improves Noise Immunity and
Data Rate, Cables, and Terminations
OD
RS-485/RS-422 are intended for network lengths up to
4000’, but the maximum system data rate decreases as
the transmission length increases. Devices operating at
15Mbps may be used at lengths up to 150’ (46m), but
the distance can be increased to 328’ (100m) by
operating at 10Mbps. The 1Mbps versions can operate at
full data rates with lengths up to 800’ (244m). Jitter is
the limiting parameter at these faster data rates, so
employing encoded data streams (e.g., Manchester
coded or Return-to-Zero) may allow increased
transmission distances. The slow versions can operate at
115kbps, or less, at the full 4000’ (1220m) distance, or
at 250kbps for lengths up to 3000’ (915m). DC cable
attenuation is the limiting parameter, so using better
quality cables (e.g., 22 AWG) may allow increased
transmission distance.
The ISL31470E, ISL31472E, ISL31475E, ISL31478E
driver design delivers larger differential output voltages
(V ) than the RS-485 standard requires, or than most
OD
RS-485 transmitters can deliver. The typical ±2.5V V
OD
provides more noise immunity than networks built using
many other transceivers.
Another advantage of the large V
OD
is the ability to drive
more than two bus terminations, which allows for utilizing
the ISL31470E, ISL31472E, ISL31475E, ISL31478E in
“star” and other multi-terminated, nonstandard network
topologies. Figure 8, details the transmitter’s V
vs I
OD
OUT
characteristic, and includes load lines for four (30Ω) and
six (20Ω) 120Ω terminations. Figure 8 shows that the
driver typically delivers ±1.3V into six terminations, and
the “Electrical Specification” table guarantees a V
of
OD
Twisted pair is the cable of choice for RS-485/RS-422
networks. Twisted pair cables tend to pick up noise and
other electromagnetically induced voltages as common
mode signals, which are effectively rejected by the
differential receivers in these ICs.
±0.8V at 21Ω over the full temperature range. The
RS-485 standard requires a minimum 1.5V V into two
OD
terminations, but the ISL31470E, ISL31472E,
ISL31475E, ISL31478E deliver RS-485 voltage levels with
2x to 3x the number of terminations.
Proper termination is imperative, when using the 15Mbps
devices, to minimize reflections. Short networks using
the 250kbps versions need not be terminated, however,
terminations are recommended unless power dissipation
is an overriding concern.
Hot Plug Function
When a piece of equipment powers up, there is a period
of time where the processor or ASIC driving the RS-485
control lines (DE, RE) is unable to ensure that the
RS-485 Tx and Rx outputs are kept disabled. If the
equipment is connected to the bus, a driver activating
prematurely during power-up may crash the bus. To
avoid this scenario, the ISL31470E, ISL31472E,
In point-to-point, or point-to-multipoint (single driver on
bus like RS-422) networks, the main cable should be
terminated in its characteristic impedance (typically
120Ω) at the end farthest from the driver. In
ISL31475E, ISL31478E devices incorporate a “Hot Plug”
multi-receiver applications, stubs connecting receivers to
the main cable should be kept as short as possible.
Multipoint (multi-driver) systems require that the main
cable be terminated in its characteristic impedance at
both ends. Stubs connecting a transceiver to the main
cable should be kept as short as possible.
function. Circuitry monitoring V ensures that, during
power-up and power-down, the Tx and Rx outputs
remain disabled, regardless of the state of DE and RE, if
CC
V
is less than ≈3.5V. This gives the processor/ASIC a
CC
chance to stabilize and drive the RS-485 control lines to
the proper states. Figure 7 illustrates the power-up and
power-down performance of the ISL31470E, ISL31472E,
ISL31475E, ISL31478E compared to an RS-485 IC
without the Hot Plug feature.
Built-In Driver Overload Protection
As stated previously, the RS-485 specification requires
that drivers survive worst case bus contentions
undamaged. These transceivers meet this requirement
via driver output short circuit current limits, and on-chip
thermal shutdown circuitry.
DE, DI = V
RE = GND
CC
5.0
2.5
3.5V
2.8V
V
The driver output stages incorporate a double fold-back
short circuit current limiting scheme which ensures that
the output current never exceeds the RS-485
specification, even at the common mode and fault
condition voltage range extremes. The first fold-back
current level (≈70mA) is set to ensure that the driver
never folds back when driving loads with common mode
voltages up to ±15V. The very low second fold-back
current setting (≈9mA) minimizes power dissipation if
the Tx is enabled when a fault occurs.
CC
0
5.0
2.5
0
R
R
= 1kΩ
L
A/Y
ISL3147xE
ISL83088E
5.0
2.5
= 1kΩ
L
RO
ISL3147xE
0
In the event of a major short circuit condition, devices
also include a thermal shutdown feature that disables
the drivers whenever the die temperature becomes
excessive. This eliminates the power dissipation,
TIME (40μs/DIV)
FIGURE 7. HOT PLUG PERFORMANCE (ISL3147xE) vs
ISL83088E WITHOUT HOT PLUG CIRCUITRY
FN7639.0
June 17, 2010
13
ISL31470E, ISL31472E, ISL31475E, ISL31478E
allowing the die to cool. The drivers automatically
re-enable after the die temperature drops about 15°C.
If the contention persists, the thermal
I
to a 10μA trickle. These devices enter shutdown
CC
whenever the receiver and driver are simultaneously
disabled (RE = V and DE = GND) for a period of at
CC
shutdown/re-enable cycle repeats until the fault is
cleared. Receivers stay operational during thermal
shutdown.
least 600ns. Disabling both the driver and the receiver
for less than 60ns guarantees that the transceiver will
not enter shutdown.
Note that receiver and driver enable times increase when
the transceiver enables from shutdown. Refer to Notes
11, 12, 13, 14 and 15, at the end of the “Electrical
Specification” table on page 9, for more information.
Low Power Shutdown Mode
These CMOS transceivers all use a fraction of the power
required by competitive devices, but they also include a
shutdown feature that reduces the already low quiescent
Typical Performance Curves
V
= 5V, T = +25°C; Unless Otherwise Specified.
A
CC
3.6
3.4
90
R
= 20Ω
D
R
= 30Ω
D
80
70
60
50
40
30
20
10
0
+25°C
+85°C
R
= 100Ω
D
3.2
3
R
= 54Ω
D
2.8
2.6
2.4
2.2
R
= 100Ω
D
R
= 54Ω
D
0
1
2
3
4
5
-40
-25
0
25
50
75 85
DIFFERENTIAL OUTPUT VOLTAGE (V)
TEMPERATURE (°C)
FIGURE 8. DRIVER OUTPUT CURRENT vs
DIFFERENTIAL OUTPUT VOLTAGE
FIGURE 9. DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs TEMPERATURE
70
60
2.45
2.40
V
, +25°C
OL
V
, +85°C
DE = V , RE = X
CC
OL
50
40
30
20
10
0
2.35
2.30
2.25
DE = GND, RE = GND
2.20
2.15
2.10
2.05
2.00
-10
-20
-30
V
, +85°C
1
OH
V
, +25°C
3
OH
0
2
4
5
-40
-25
0
25
50
75 85
TEMPERATURE (°C)
RECEIVER OUTPUT VOLTAGE (V)
FIGURE 10. SUPPLY CURRENT vs TEMPERATURE
FIGURE 11. RECEIVER OUTPUT CURRENT vs RECEIVER
OUTPUT VOLTAGE
FN7639.0
June 17, 2010
14
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Typical Performance Curves
V
= 5V, T = +25°C; Unless Otherwise Specified. (Continued)
CC A
800
340
335
330
325
320
315
310
305
300
R
= 54Ω, C = 50pF
D
D
600
400
200
0
t
PLH
Y OR Z
-200
-400
-600
t
PHL
A/Y OR B/Z
-70
-50
-30
-10 0 10
30
50
70
-40
-25
0
25
50
75 85
BUS PIN VOLTAGE (V)
TEMPERATURE (°C)
FIGURE 12. BUS PIN CURRENT vs BUS PIN VOLTAGE
FIGURE 13. DRIVER DIFFERENTIAL PROPAGATION
DELAY vs TEMPERATURE (ISL31470E,
ISL31472E)
8
85
R
= 54Ω, C = 50pF
D
D
R
= 54Ω, C = 50pF
D D
7
6
5
4
3
2
1
0
80
75
70
65
60
55
50
t
PLH
t
PHL
25
|t
- t
|
PHL
PLH
-40
0
50
85
75
-25
25
-40
-25
0
50
75 85
TEMPERATURE (°C)
TEMPERATURE (°C)
FIGURE 14. DRIVER DIFFERENTIAL SKEW vs
TEMPERATURE (ISL31470E, ISL31472E)
FIGURE 15. DRIVER DIFFERENTIAL PROPAGATION
DELAY vs TEMPERATURE (ISL31475E)
27
4.0
3.5
3.0
2.5
2.0
R
= 54Ω, C = 50pF
D
D
R
= 54Ω, C = 50pF
D
D
25
23
21
19
17
15
t
PLH
t
PHL
|t
- t
|
PHL
PLH
-40
-25
0
25
50
75 85
-40
0
50
85
75
-25
25
TEMPERATURE (°C)
TEMPERATURE (°C)
FIGURE 16. DRIVER DIFFERENTIAL SKEW vs
TEMPERATURE (ISL31475E)
FIGURE 17. DRIVER DIFFERENTIAL PROPAGATION
DELAY vs TEMPERATURE (ISL31478E)
FN7639.0
June 17, 2010
15
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Typical Performance Curves
V
= 5V, T = +25°C; Unless Otherwise Specified. (Continued)
CC
A
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
R
= 54Ω, C = 50pF
D
D
|t
- t
|
PHL
PLH
-40
0
50
85
75
-25
25
TEMPERATURE (°C)
FIGURE 18. DRIVER DIFFERENTIAL SKEW vs TEMPERATURE (ISL31478E)
A
B
A
15
10
5
15
B
VID = ±1V
VID = ±1V
10
5
RO
RO
RO
RO
0
0
5
0
5
0
-5
-5
-10
-15
-10
-15
A
B
A
B
TIME (1μs/DIV)
TIME (400ns/DIV)
FIGURE 19. ±15V RECEIVER PERFORMANCE
(ISL31470E, ISL31472E)
FIGURE 20. ±15V RECEIVER PERFORMANCE
(ISL31475E)
A
R
= 54Ω, C = 50pF
D
D
15
5
0
B
VID = ±1V
DI
10
5
5
0
RO
RO
RO
0
5
0
3
2
1
-5
A/Y - B/Z
0
-10
-15
A
B
-1
-2
-3
TIME (20ns/DIV)
TIME (1μs/DIV)
FIGURE 21. ±15V RECEIVER PERFORMANCE
(ISL31478E)
FIGURE 22. DRIVER AND RECEIVER WAVEFORMS
(ISL31470E, ISL31472E)
FN7639.0
June 17, 2010
16
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Typical Performance Curves
V
= 5V, T = +25°C; Unless Otherwise Specified. (Continued)
CC A
R
= 54Ω, C = 50pF
D
R
= 54Ω, C = 50pF
D
D
D
5
0
5
0
DI
DI
5
0
5
0
RO
RO
3
3
2
1
2
1
0
0
A/Y - B/Z
-1
-2
-3
-1
-2
-3
A/Y - B/Z
TIME (400ns/DIV)
TIME (20ns/DIV)
FIGURE 23. DRIVER AND RECEIVER WAVEFORMS
(ISL31475E)
FIGURE 24. DRIVER AND RECEIVER WAVEFORMS
(ISL31478E)
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND
PROCESS:
Si Gate BiCMOS
FN7639.0
June 17, 2010
17
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to
web to make sure you have the latest Rev.
DATE
REVISION
CHANGE
6/17/10
FN7639.0
Initial Release
Products
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Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones,
handheld products, and notebooks. Intersil's product families address power management and analog signal
processing functions. Go to www.intersil.com/products for a complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device
information page on intersil.com: ISL31470E, ISL31472E, ISL31475E, ISL31478E
To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff
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Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications
at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by
Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any
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For information regarding Intersil Corporation and its products, see www.intersil.com
FN7639.0
June 17, 2010
18
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Package Outline Drawing
M14.15
14 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE
Rev 1, 10/09
4
0.10 C A-B 2X
8.65
A
3
6
DETAIL"A"
0.22±0.03
D
14
8
6.0
3.9
4
0.10 C D 2X
0.20 C 2X
7
PIN NO.1
ID MARK
(0.35) x 45°
4° ± 4°
5
0.31-0.51
0.25M C A-B D
B
3
6
TOP VIEW
0.10 C
H
1.75 MAX
1.25 MIN
0.25
GAUGE PLANE
C
0.10-0.25
SEATING PLANE
1.27
0.10 C
SIDE VIEW
DETAIL "A"
(1.27)
(0.6)
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to AMSEY14.5m-1994.
3. Datums A and B to be determined at Datum H.
(5.40)
4. Dimension does not include interlead flash or protrusions.
Interlead flash or protrusions shall not exceed 0.25mm per side.
5. The pin #1 indentifier may be either a mold or mark feature.
6. Does not include dambar protrusion. Allowable dambar protrusion
shall be 0.10mm total in excess of lead width at maximum condition.
(1.50)
7. Reference to JEDEC MS-012-AB.
TYPICAL RECOMMENDED LAND PATTERN
FN7639.0
June 17, 2010
19
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Dual-In-Line Plastic Packages (PDIP)
E8.3 (JEDEC MS-001-BA ISSUE D)
N
8 LEAD DUAL-IN-LINE PLASTIC PACKAGE
E1
INDEX
AREA
INCHES
MILLIMETERS
1
2
3
N/2
SYMBOL
MIN
MAX
0.210
-
MIN
-
MAX
5.33
-
NOTES
-B-
A
A1
A2
B
-
4
-A-
D
E
0.015
0.115
0.014
0.045
0.008
0.355
0.005
0.300
0.240
0.39
2.93
0.356
1.15
0.204
9.01
0.13
7.62
6.10
4
BASE
PLANE
0.195
0.022
0.070
0.014
0.400
-
4.95
0.558
1.77
0.355
10.16
-
-
A2
A
-C-
-
SEATING
PLANE
L
C
L
B1
C
8, 10
D1
B1
eA
-
A
1
D1
e
D
5
eC
C
B
eB
D1
E
5
0.010 (0.25) M
C A B S
0.325
0.280
8.25
7.11
6
NOTES:
E1
e
5
1. Controlling Dimensions: INCH. In case of conflict between
EnglishandMetricdimensions, theinchdimensionscontrol.
0.100 BSC
0.300 BSC
2.54 BSC
7.62 BSC
-
e
e
6
A
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
-
0.430
0.150
-
10.92
3.81
7
3. Symbolsaredefinedinthe“MOSeriesSymbolList”inSection
2.2 of Publication No. 95.
B
L
0.115
2.93
4
9
4. DimensionsA,A1andLaremeasuredwiththepackageseated
in JEDEC seating plane gauge GS-3.
N
8
8
Rev. 0 12/93
5. D, D1, andE1dimensionsdonotincludemoldflashorprotru-
sions. Mold flash or protrusions shall not exceed 0.010 inch
(0.25mm).
e
6. Eand
pendicular to datum
7. e and e are measured at the lead tips with the leads uncon-
aremeasuredwiththeleadsconstrainedtobeper-
A
-C-
.
B
C
strained. e must be zero or greater.
C
8. B1maximumdimensionsdonotincludedambarprotrusions.
Dambar protrusions shall not exceed 0.010 inch (0.25mm).
9. N is the maximum number of terminal positions.
10. Corner leads (1, N, N/2 and N/2 + 1) for E8.3, E16.3, E18.3,
E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch
(0.76 - 1.14mm).
FN7639.0
June 17, 2010
20
ISL31470E, ISL31472E, ISL31475E, ISL31478E
Small Outline Plastic Packages (SOIC)
M8.15 (JEDEC MS-012-AA ISSUE C)
N
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE
INDEX
AREA
0.25(0.010)
M
B M
H
INCHES
MILLIMETERS
E
SYMBOL
MIN
MAX
MIN
1.35
0.10
0.33
0.19
4.80
3.80
MAX
1.75
0.25
0.51
0.25
5.00
4.00
NOTES
-B-
A
A1
B
C
D
E
0.0532
0.0040
0.013
0.0688
0.0098
0.020
-
-
1
2
3
L
9
SEATING PLANE
A
0.0075
0.1890
0.1497
0.0098
0.1968
0.1574
-
-A-
3
h x 45°
D
4
-C-
e
0.050 BSC
1.27 BSC
-
α
H
h
0.2284
0.0099
0.016
0.2440
0.0196
0.050
5.80
0.25
0.40
6.20
0.50
1.27
-
e
A1
C
5
B
0.10(0.004)
L
6
0.25(0.010) M
C
A M B S
N
α
8
8
7
NOTES:
0°
8°
0°
8°
-
1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication Number 95.
Rev. 1 6/05
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006
inch) per side.
4. Dimension “E” does not include interlead flash or protrusions. Inter-
lead flash and protrusions shall not exceed 0.25mm (0.010 inch) per
side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater
above the seating plane, shall not exceed a maximum value of
0.61mm (0.024 inch).
10. Controlling dimension: MILLIMETER. Converted inch dimensions
are not necessarily exact.
FN7639.0
June 17, 2010
21
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