ISL32437EIUZ-T7A Intersil, ISL32437EIUZ-T7A Datasheet

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ISL32437EIUZ-T7A

Manufacturer Part Number
ISL32437EIUZ-T7A
Description
RS-422/RS-485 Interface IC 40V OVP POLV -40+85 5V RS-485 1/2 DUP
Manufacturer
Intersil
Datasheet

Specifications of ISL32437EIUZ-T7A

Product Category
RS-422/RS-485 Interface IC
Rohs
yes
Data Rate
250 Kbps, 1 Mbps
Operating Supply Voltage
3.3 V, 5 V
Supply Current
4.5 mA
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
SMD/SMT
Package / Case
MSOP-8
Function
Transceiver
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Shutdown
Yes
±40V Fault Protected, 3.3V to 5V, ±15V Common Mode
Range, RS-485/RS-422 Transceivers With Cable Invert
and ±15kV ESD
ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E
The ISL32430E through ISL32437E are 3.3V to 5V powered, fault
protected, extended common mode range differential transceivers
for balanced communication. The RS-485 bus pins (driver outputs
and receiver inputs) are protected against overvoltages up to
±40V, and against ±15kV ESD strikes. 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.
Transmitters are RS-485 compliant with V
1.1V differential output voltage into the RS-485 specified 54Ω
load even with V
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 full fail-safe operation
is maintained even when the Rx input polarity is switched (cable
invert function on ISL32437E).
The ISL32437E includes a cable invert function that reverses the
polarity of the Rx and Tx bus pins in case the cable is
misconnected during installation.
See Table 1 on page 2 for key features and configurations by
device number.
Related Literature
• See FN7921, “ISL32450E, ISL32452E, ISL32453E,
March 1, 2012
FN7920.0
ISL32455E, ISL32457E: ±60V Fault Protected, 3.3V to 5V,
±20V Common Mode Range, RS-485/RS-422 Transceivers
with Cable Invert and ±15kV ESD”
FIGURE 1. EXCEPTIONAL ISL32433E RX OPERATES AT >1Mbps
20
15
10
5
0
RO
EVEN WITH ±15V COMMON MODE VOLTAGE
B
A
CC
= 3V.
TIME (200ns/DIV)
1
CC
≥ 4.5V and deliver a
VID = ±1V
2Mbps
V
CC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
= 3V
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• Fault Protected RS-485 Bus Pins . . . . . . . . . . . . . . up to ±40V
• Extended Common Mode Range . . . . . . . . . . . . . . . . . . . ±15V
• ±15kV HBM ESD Protection on RS-485 Bus Pins
• Wide Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V
• Cable Invert Pin (ISL32437E Only)
• 1/4 Unit Load for up to 128 Devices on the Bus
• High Transient Overvoltage Tolerance . . . . . . . . . . . . . . . ±60V
• Full Fail-safe (Open, Short, Terminated) RS-485 Receivers
• Choice of RS-485 Data Rates . . . . . . . . . . . . 250kbps or 1Mbps
• Low Quiescent Supply Current . . . . . . . . . . . . . . . . . . . 2.1mA
• Pb-Free (RoHS Compliant)
Applications
• Utility Meters/Automated Meter Reading Systems
• Air Conditioning Systems
• Security Camera Networks
• Building Lighting and Environmental Control Systems
• Industrial/Process Control Networks
Larger Than Required for RS-485
Corrects for Reversed Cable Connections While Maintaining Rx
Full Fail-safe Functionality
Ultra Low Shutdown Supply Current . . . . . . . . . . . . . . . 10µA
FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON MODE
-15
15
12
-7
0
All other trademarks mentioned are the property of their respective owners.
STANDARD RS-485
TRANSCEIVER
RANGE vs STANDARD RS-485 DEVICES
|
Copyright Intersil Americas Inc. 2012. All Rights Reserved
ISL3243XE

Related parts for ISL32437EIUZ-T7A

ISL32437EIUZ-T7A Summary of contents

Page 1

... FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON MODE CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL3243XE ...

Page 2

... EIBZ ISL32435EIUZ 2435E ISL32437EIBZ 32437 EIBZ ISL32437EIUZ 2437E NOTES: 1. Add “-T*” suffix for tape and reel. Please refer to 2. 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 ...

Page 3

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Pin Configurations (Continued) ISL32432E, ISL32435E (8 LD SOIC MSOP) TOP VIEW Truth Tables TRANSMITTING INPUTS INV (Note ...

Page 4

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Pin Descriptions (Continued) PIN NUMBER ISL32430E, ISL32430E, PIN ISL32433E, ISL32433E, ISL32432E, NAME 14 LD SOIC 10 LD MSOP ISL32435E ISL32437E B/Z N N/A ...

Page 5

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Typical Operating Circuits +3. GND 6, 7 +3. ...

Page 6

... Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range . . . . . . . . . . . . . . . -65°C to +150°C +0.3V) Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below CC http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Supply Voltage (V Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Bus Pin Common Mode Voltage Range -15V to +15V = 3V to 3.6V and 4.5V to 5.5V ...

Page 7

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Electrical Specifications Test Conditions: V case 3.3V +25°C (Note 8). Boldface limits apply over the operating temperature range, -40°C to +85° PARAMETER SYMBOL ...

Page 8

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Electrical Specifications Test Conditions: V case 3.3V +25°C (Note 8). Boldface limits apply over the operating temperature range, -40°C to +85° PARAMETER SYMBOL ...

Page 9

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Electrical Specifications Test Conditions: V case 3.3V +25°C (Note 8). Boldface limits apply over the operating temperature range, -40°C to +85° PARAMETER SYMBOL ...

Page 10

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 4A. TEST CIRCUIT FIGURE 4. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES SIGNAL Y GENERATOR ...

Page 11

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Test Circuits and Waveforms SIGNAL SIGNAL GENERATOR GENERATOR +1.5V FIGURE 7A. TEST CIRCUIT SIGNAL GENERATOR PARAMETER (Note 12) ...

Page 12

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Application Information 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 ...

Page 13

... B and Z being inverting. With the invert pin high, the corresponding bus pins reverse their polarity and Z are now noninverting, and A and Y become inverting. Intersil’s unique cable invert function is superior to that found on competing devices, because the Rx full fail-safe function is maintained, even when the Rx polarity is reversed. Competitor devices implement the Rx invert function simply by inverting the Rx output ...

Page 14

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Typical Performance Curves 20Ω 30Ω +25°C 60 +85°C +25° +85° 3. 0.5 1 1.5 2 2.5 DIFFERENTIAL ...

Page 15

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Typical Performance Curves 300 290 280 V = 3.3V CC 270 260 250 240 230 t PLH 220 t PHL 210 200 -40 -30 -20 - TEMPERATURE (°C) FIGURE 15. DRIVER ...

Page 16

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Typical Performance Curves A TIME (1µs/DIV) FIGURE 21 3.3V, DRIVER AND RECEIVER WAVEFORMS CC (ISL32430E, ISL32432E, ISL32437E ...

Page 17

... 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 infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. ...

Page 18

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Package Outline Drawing M8.118 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE Rev 4, 7/11 3.0±0. PIN TOP VIEW H 0.25 - 0.36 0. SIDE ...

Page 19

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Package Outline Drawing M8.15 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 4, 1/12 INDEX AREA TOP VIEW 5.00 (0.197) 4.80 (0.189) 1.27 (0.050) 0.51(0.020) 0.33(0.013) SIDE VIEW “A 19 DETAIL ...

Page 20

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Mini Small Outline Plastic Packages (MSOP -B- INDEX 1 2 0.20 (0.008) AREA TOP VIEW 0.25 (0.010) GAUGE PLANE SEATING PLANE - 0.10 (0.004) b -H- - ...

Page 21

ISL32430E, ISL32432E, ISL32433E, ISL32435E, ISL32437E Package Outline Drawing M14.15 14 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 1, 10/09 14 3 PIN NO.1 ID MARK 5 0.31-0.51 0. A-B D TOP VIEW ...

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