SN74ALS639ADWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS639ADWRG4 is an octal bus transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a 20-SOIC package with surface mount installation. The device supports asynchronous two-way communication between open-collector and 3-state buses. It functions as a non-inverting transceiver with eight bits per element. The operational temperature range extends from 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Designed for asynchronous two-way communication between open-collector and 3-state buses
• Provides non-inverting data transmission capabilities
• Supports surface mount installation in a compact 20-pin SOIC package

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous bus interface systems
• Open-collector to 3-state bus bridging
• Octal data direction control circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm that the 20-SOIC package dimensions match your PCB footprint requirements. Ensure the 4.5V to 5.5V operating voltage aligns with your system power rails. Check for available replacement options due to end-of-life status.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring bidirectional octal data transfer between different bus logic families. It is suitable for applications needing isolation between open-collector outputs and standard 3-state inputs. Consider the ALSS speed characteristics and voltage compatibility during circuit design.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments 74ALS series of logic devices. It serves as an octal bus transceiver variant within the broader family of high-speed CMOS logic components. The device provides essential interface functionality for legacy and industrial control systems requiring robust bidirectional data pathways.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete product status, alternative sourcing or redesign may be necessary.