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ISL8491 - RS-485/RS-422 Transceivers

This page provides the datasheet information for the ISL8491, a member of the ISL8485 RS-485/RS-422 Transceivers family.

Description

(RoHS COMPLIANT) PKG.

DWG.

TEMP.

Features

  • Specified for 10% tolerance supplies.
  • Class 3 ESD protection (HBM) on all pins: 7kV.
  • High data rates: up to 5Mbps.
  • Single unit load allows up to 32 devices on the bus.
  • Low quiescent current: 500µA.
  • -7V to +12V common-mode input voltage range.
  • Three state Rx and Tx outputs (except ISL8490).
  • 30ns propagation delays, 5ns skew.
  • Full duplex and half duplex pinouts.
  • Operation from a single +5V supply (10% tolera.

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Datasheet preview – ISL8491

Datasheet Details

Part number ISL8491
Manufacturer Renesas
File Size 947.63 KB
Description RS-485/RS-422 Transceivers
Datasheet download datasheet ISL8491 Datasheet
Additional preview pages of the ISL8491 datasheet.

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Full PDF Text Transcription

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DATASHEET ISL8485, ISL8490, ISL8491 5V, Low Power, High Speed, RS-485/RS-422 Transceivers The ISL8485, ISL8490, and ISL8491 RS-485/RS-422 devices are BiCMOS 5V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Unlike competitive devices, this family is specified for 10% tolerance supplies (4.5V to 5.5V). The ISL8485, ISL8490, and ISL8491 feature data rates up to 5Mbps. All devices present a single unit load to the RS-485 bus, which allows up to 32 transceivers on the network. The receiver (Rx) inputs feature a “fail-safe if open” design, which ensures a logic high Rx output if the Rx inputs are floating. The driver (Tx) outputs are short-circuit protected, even for voltages exceeding the power supply voltage.
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