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SN54ALS640B - OCTAL BUS TRANSCEIVERS

Download the SN54ALS640B datasheet PDF. This datasheet also covers the SN54AS640 variant, as both devices belong to the same octal bus transceivers family and are provided as variant models within a single manufacturer datasheet.

General Description

These octal bus transceivers are designed for asynchronous two-way communication 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SN54AS640-etcTI.pdf) that lists specifications for multiple related part numbers.

Other Datasheets by Texas Instruments

Part Number Description
SN54ALS645A Octal Bus Transceivers
SN54ALS646 OCTAL BUS TRANSCEIVERS AND REGISTERS
SN54ALS648 OCTAL BUS TRANSCEIVERS AND REGISTERS
SN54ALS652 OCTAL BUS TRANSCEIVERS AND REGISTERS
SN54ALS653 OCTAL BUS TRANSCEIVERS AND REGISTERS
SN54ALS688 8-BIT IDENTITY COMPARATORS
SN54ALS00A Quadruple 2-Input Positive-NAND Gates
SN54ALS02A Quadruple 2-Input Positive-NOR Gates
SN54ALS03B Quadruple 2-Input Positive-NAND Buffer
SN54ALS04B Hex Inverters

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 Logic • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These octal bus transceivers are designed for asynchronous two-way communication 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. SN54ALS640B, SN54AS640 . . .