SN74ALS641A-1DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS641A-1DW is an octal bus transceiver from the Texas Instruments ALS series, housed in a 20-pin SOIC package. It features non-inverting logic with open-collector outputs and direction control functionality. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum low-level output current of 48 mA. Propagation delay is specified at 25 ns under a 50 pF load condition. It functions as a single eight-bit bidirectional data path suitable for TTL-to-TTL interface applications.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission between two ports via direction control
• Features open-collector outputs capable of driving high-current loads
• Supports non-inverting signal transfer with TTL-compatible input levels

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus interfacing
• TTL-to-TTL level translation
• Memory buffer applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm package integrity and pin alignment against the 20-SOIC specification. Ensure compatibility with existing circuit designs regarding open-collector output requirements and direction control logic signals before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-drive capability on bidirectional buses. The open-collector architecture allows wired-OR configurations but requires external pull-up resistors. Verify that the system design accommodates the specific propagation delay characteristics and power supply constraints defined for the ALS family.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS641 family of octal bus transceivers. It serves as a specialized variant designed for systems needing robust data handling across bidirectional pathways. The device integrates standard logic functions optimized for speed and drive strength within the Advanced Low-power Schottky technology framework.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74ALS641A-1DWR is listed as a manufacturer-recommended substitute. Verify pinout and electrical specifications match the original design requirements before substitution.