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SN74ALS639A - OCTAL BUS TRANSCEIVERS

Download the SN74ALS639A datasheet PDF (SN74AS638A included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for octal bus transceivers.

Description

These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state buses.

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Note: The manufacturer provides a single datasheet file (SN74AS638A-etcTI.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription

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SN74ALS638A, SN74ALS639A, SN74AS638A, SN74AS639 OCTAL BUS TRANSCEIVERS • Bidirectional Bus Transceivers in High-Density 20-Pin Packages • Choice of True or Inverting Logic • A-Bus Outputs Are Open Collector; B-Bus Outputs Are 3 State • Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs DEVICE SN74ALS638A, SN74AS638A SN74ALS639A, SN74AS639 A OUTPUT Open collector Open collector B OUTPUT 3 state 3 state LOGIC Inverting True SDAS123A – DECEMBER 1983 – REVISED JANUARY 1995 DW OR N PACKAGE (TOP VIEW) DIR 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GND 10 20 VCC 19 OE 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 description These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state b
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