SN74ALS642A-IN

$1.14

Description：BUS TRANSCEIVER, ALS SERIES, 1-F
Series：*
Mfr：Texas Instruments
Package：Bulk

SKU:0a8adb7ae399 Category: Buffers, Drivers, Receivers, Transceivers Brand: Texas Instruments

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Product introduction

SN74ALS642A-IN is listed in the Buffers, Drivers, Receivers, Transceivers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is BUS TRANSCEIVER, ALS SERIES, 1-F. Review the specifications below when checking this part for your BOM.

Buffers, Drivers, Receivers, Transceivers specifications for SN74ALS642A-IN

Description：BUS TRANSCEIVER, ALS SERIES, 1-F
Series：*
Mfr：Texas Instruments
Package：Bulk
Logic Type：-
Number of Elements：-
Number of Bits per Element：-
Input Type：-
Output Type：-
Current - Output High, Low：-
Voltage - Supply：-
Operating Temperature：-
Mounting Type：-
Package / Case：-
Supplier Device Package：-
Grade：-
Qualification：-

Buffers, Drivers, Receivers, Transceivers datasheet and documents for SN74ALS642A-IN

SN74ALS642A-IN

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS642A-IN is an octal bus transceiver from the Texas Instruments ALS logic family, designed for asynchronous two-way communication between data buses. It features inverting logic and operates within a supply voltage range of 4.5 V to 5.5 V. The device supports bidirectional data transfer controlled by a DIR input and includes an OE input for isolation. It is characterized for operation from 0°C to 70°C and is available in high-density 20-pin packages.

Buffers, Drivers, Receivers, Transceivers Feature Summary

Bidirectional data transmission between A and B buses
Inverting logic functionality
Asynchronous control via DIR and OE inputs

Buffers, Drivers, Receivers, Transceivers Applications

Asynchronous two-way communication between data buses
Bus-oriented memory and command decoders
Digital signal processing systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type associated with the '-IN' suffix against official documentation, as standard datasheets list 'N' for PDIP and 'DW' for SOIC. Confirm RoHS compliance status and lead finish details through current manufacturer ordering information. Ensure the operating temperature range meets system requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when inverting octal bus transceivers are required for bidirectional data flow. The ALS series offers lower power consumption compared to standard TTL while maintaining compatible speeds. Consider the -1 version if higher low-level output current capability is necessary for specific load conditions.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74ALS64x family of octal bus transceivers. It shares functional similarities with the non-inverting SN74ALS641A but provides inverted outputs. The ALS technology ensures reduced power dissipation relative to earlier logic families while supporting standard 5-V CMOS operation levels.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS641A (non-inverting equivalent)

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the DIR input?

The DIR input determines the direction of data flow. A high level directs data from the A bus to the B bus, while a low level directs data from the B bus to the A bus.