SN74AS641N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS641N is an octal bus transceiver utilizing Advanced Schottky (AS) TTL technology, housed in a standard plastic 20-pin dual in-line package (PDIP). It provides asynchronous two-way communication between data buses with direction control and output enable functions. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range from 0°C to 70°C. It features true logic outputs and open-collector characteristics.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Bidirectional data transmission capability between A and B buses controlled by the DIR input
• High-speed switching performance characteristic of Advanced Schottky technology
• Output isolation functionality provided by the OE input

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous two-way communication between data buses
• Bus-oriented memory and register systems
• Control signals driving multiple loads

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the component matches the specific SN74AS641N designation rather than similar variants like SN74ALS641A or SN74AS642A. Confirm the PDIP-20 package type and ensure the manufacturer is Texas Instruments. Check for RoHS compliance status as indicated in official documentation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed bidirectional data transfer is required using AS TTL logic levels. Ensure the application environment stays within the specified 0°C to 70°C temperature range. Verify that the system voltage remains between 4.5 V and 5.5 V to maintain proper operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74AS series of octal bus transceivers from Texas Instruments. It shares functional similarities with the SN74ALS641A but offers faster switching speeds typical of the AS family. The N suffix denotes the standard plastic DIP package option available for through-hole mounting.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AS641DW serves as a pin-compatible alternative in a SOIC package.