SN74ALS623AN

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS623AN is an octal bus transceiver from the Texas Instruments ALS logic family, designed for asynchronous two-way communication between data buses. It features true logic outputs with three-state capability and operates within a supply voltage range of 4.5 V to 5.5 V. The device supports bidirectional data transmission controlled by dual output-enable inputs (OEAB and OEBA), allowing isolation or simultaneous bus-to-bus transfer. It includes local bus-latch functionality and is characterized for operation in temperatures ranging from 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides asynchronous two-way communication between data buses via dual control inputs
• Features true logic outputs with three-state capability for effective bus isolation
• Supports local bus-latch capability through simultaneous enable configuration

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous data bus communication systems
• Bidirectional data transmission interfaces
• Local bus-latch applications requiring high-impedance isolation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'N' corresponds to the standard plastic DIP package. Confirm the specific revision level matches system requirements. Ensure compatibility with the 4.5 V to 5.5 V supply voltage range. Check for RoHS compliance status if environmental regulations apply. Validate pinout alignment with existing PCB footprints before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when true logic polarity is required for bidirectional bus interfacing. The ALS series offers lower power consumption compared to standard TTL while maintaining compatible speed. Consider the SN74ALS620A if inverting logic is needed instead. Evaluate the SN74AS623 variant if higher drive current capabilities are necessary for the application.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74ALS62xA series of octal bus transceivers manufactured by Texas Instruments. It shares functional similarities with the SN74ALS620A and SN74ALS621A but differs in output logic type. The SN74ALS623A specifically provides non-inverting (true) outputs, distinguishing it from the inverting SN74ALS620A and the open-collector SN74ALS621A.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS620A: Inverting logic outputs; otherwise functionally similar. SN74ALS621A: Open-collector true outputs; limited drive capability. SN74AS623: Higher drive current and faster switching speeds; true logic outputs.