1

±16.5kV ESD Protected, +125°C, 1.8V to 3.6V,

Low Power, SOT-23, RS-485/RS-422 Transmitters

ISL32613E, ISL32614E

The Intersil ISL32613E and ISL32614E are ±16.5kV HBM ESD

Protected (7kV IEC61000 contact), 1.8V powered, single

transmitters for differential communication. These drivers

have very low bus currents (±40µA), so they present less than

a “1/8 unit load” to the bus. This allows more than 256

transmitters on the network, without violating the RS-485

specification’s 32 unit load maximum and without using

repeaters.

Hot Plug circuitry ensures that the Tx outputs remain in a high

impedance state while the power supply stabilizes.

Both ICs utilize slew rate limited drivers, which reduce EMI and

minimize reflections from improperly terminated transmission

lines or unterminated stubs in multidrop and multipoint

applications. The ISL32613E is more slew rate limited for data

rates up to 128kbps, while the less limited ISL32614E is

useful for data rates up to 256kbps.

For companion low power single RS-485 receivers, please see

the ISL32610E data sheet.

Features

• Wide Supply Voltage Range . . . . . . . . . . . . . . . . . 1.8V to 3.6V

• Low Quiescent Supply Current . . . . . . . . . . . . . . . 80µA (Max)

- Very Low Shutdown Supply Current. . . . . . . . . . 2µA (Max)

• High ESD Protection on RS-485 Outputs . . . . ±16.5kV HBM

- Class 3 ESD Level on All Other Pins. . . . . . . . . . >8kV HBM

• Specified for +125°C Operation

• Hot Plug - Tx Outputs Remain Three-state During Power-up

• Low Tx Leakage Allows >256 Devices on the Bus

• Slew Rate Limited for Data Rates Up to 256kbps

• Current Limiting and Thermal Shutdown for Driver Overload

Protection

•5V Tolerant Logic Inputs

• Pb-Free (RoHS Compliant)

Applications

• Industrial/Process Control Networks

• Space-constrained Systems

• Factory Automation

• Building Environmental Control/Lighting Systems

10µ

100µ

1m

10m

2.2

2.4

2.6

2.8

3.0

3.2

3.4

3.6

STATIC

DYNAMIC (128kbps)

Truth Table

TRANSMITTING

INPUTS

OUTPUTS

DE (Note 9)

DI

Z

Y

1101

1010

0X

High-Z *

High-Z *

NOTE: *Shutdown 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) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

August 30, 2011

FN7906.0