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SN74ALS640B Datasheet Octal Bus Transceivers

Manufacturer: Texas Instruments

Overview: SN54ALS640B, SN54AS640, SN74ALS640B, SN74AS640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS122A – DECEMBER 1983 – REVISED JANUARY 1995 • Bidirectional Bus Transceivers in High-Density 20-Pin Packages • Inverting.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

These octal bus transceivers are designed for asynchronous two-way munication between data buses.

These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input.

The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.

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