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DS8641 - Quad Unified Bus Transceiver

Datasheet Summary

Description

The DS8641 is a quad high speed drivers/receivers designed for use in bus organized data transmission systems interconnected by terminated 120Ω impedance lines.

Features

  • n 4 separate driver/receiver pairs per package n Guaranteed minimum bus noise immunity of 0.6V, 1.1V typ n Temperature insensitive receiver thresholds track bus logic levels n 30 µA typical bus terminal current with normal VCC or with VCC = 0V n Open collector driver output allows wire-OR connection n High speed n Series 74 TTL compatible driver and disable inputs and receiver outputs Connection Diagram Dual-In-Line Package DS005806-1 Top View Order Number DS8641N See NS Package Number N16A.

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Datasheet Details

Part number DS8641
Manufacturer National Semiconductor
File Size 78.13 KB
Description Quad Unified Bus Transceiver
Datasheet download datasheet DS8641 Datasheet
Additional preview pages of the DS8641 datasheet.

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Full PDF Text Transcription

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DS8641 Quad Unified Bus Transceiver January 1996 DS8641 Quad Unified Bus Transceiver General Description The DS8641 is a quad high speed drivers/receivers designed for use in bus organized data transmission systems interconnected by terminated 120Ω impedance lines. The external termination is intended to be a 180Ω resistor from the bus to the +5V logic supply together with a 390Ω resistor from the bus to ground. The bus can be terminated at one or both ends. Low bus pin current allows up to 27 driver/ receiver pairs to utilize a common bus. The bus loading is unchanged when VCC = 0V. The receivers incorporate tight thresholds for better bus noise immunity. One two-input NOR gate is included to disable all drivers in a package simultaneously.
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