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ISL83491IBZ

RENISL83491IBZ

Renesas Electronics Corporation
1/1 Transceiver Full RS422, RS485 14-SOIC
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Overview

The ISL83491IBZ is a 3.3V powered, full-duplex transceiver designed for high-speed RS-485 and RS-422 communication. It supports data rates up to 10Mbps and features a low-power shutdown mode that consumes only 15uA, making it suitable for power-sensitive industrial applications. The device includes a fail-safe receiver design that ensures a logic high output if the inputs are floating.

Why Choose This Part

The transceiver offers a wide common-mode input range of -7V to +12V and includes thermal shutdown protection to prevent damage from bus contention. Its low 0.65mA supply current and integrated fail-safe receiver simplify circuit design by removing the need for external pull-up resistors on the bus.

Applications

Factory Automation
High-speed data transmission between PLCs and motor controllers in electrically noisy industrial environments.
Security Networks
Long-distance communication for building access control systems and surveillance camera PTZ control.
Level Translators
Bridging 3.3V logic controllers to 5V tolerant differential bus architectures in legacy systems.

Key Specifications

Type Transceiver
Duplex Full
Protocol RS422, RS485
Data Rate 10Mbps
Mounting Type Surface Mount
Package / Case 14-SOIC (0.154", 3.90mm Width)
Voltage - Supply 3V ~ 3.6V
Receiver Hysteresis 50 mV
Operating Temperature -40degC ~ 85degC
Supplier Device Package 14-SOIC
Number of Drivers/Receivers 1/1

Getting Started

To evaluate this part, connect the 14-SOIC package to a breadboard adapter or custom PCB with 0.1uF decoupling capacitors near the VCC pin. Ensure differential pairs are routed with matched impedance and utilize the shutdown (SHDN) pin to test power-saving modes during idle periods.