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LMS1487 - 5V Low Power RS-485 / RS-422 Differential Bus Transceiver

Datasheet Summary

Description

The LMS1487 is a low power differential bus/line transceiver designed for high speed bidirectional data communication on multipoint bus transmission lines.

It is designed for balanced transmission lines.

Features

  • Meet ANSI standard RS-485-A and RS-422-B.
  • Data rate 2.5 Mbps.
  • Single supply voltage operation, 5V.
  • Wide input and output voltage range.
  • Thermal shutdown protection.
  • Short circuit protection.
  • Low quiescent current 320μA.
  • Allows up to 128 transceivers on the bus.
  • Open circuit fail-safe for receiver.
  • Extended operating temperature range.
  • 40°C to 85°C.
  • Drop-in replacement to MAX1487.
  • Available in 8-pin SOIC and 8-pin DIP package Ap.

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Datasheet preview – LMS1487

Datasheet Details

Part number LMS1487
Manufacturer National Semiconductor
File Size 330.12 KB
Description 5V Low Power RS-485 / RS-422 Differential Bus Transceiver
Datasheet download datasheet LMS1487 Datasheet
Additional preview pages of the LMS1487 datasheet.

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Full PDF Text Transcription

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LMS1487 5V Low Power RS-485 / RS-422 Differential Bus Transceiver LMS1487 OBSOLETE October 12, 2011 5V Low Power RS-485 / RS-422 Differential Bus Transceiver General Description The LMS1487 is a low power differential bus/line transceiver designed for high speed bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines. It meets ANSI Standards TIA/EIA RS422B, TIA/EIA RS485-A and ITU recommendation and V.11 and X.27. The LMS1487 combines a TRI-STATE® differential line driver and differential input receiver, both of which operate from a single 5.0V power supply. The driver and receiver have an active high and active low, respectively, that can be externally connected to function as a direction control.
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