SN74ALS638A-1DWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS638A-1DWRG4 is an octal bus transceiver from the Texas Instruments 74ALS series, designed for high-speed data transfer in 5V logic systems. It features a single element with eight bits per element, housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5V to 5.5V and supports open-collector or push-pull output configurations. It is rated for operation at temperatures between 0°C and 70°C, ensuring reliability in standard industrial environments.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver architecture supporting bidirectional data flow
• Compatible with standard 5V TTL logic families
• Configurable output drive modes including open-collector and push-pull

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed data bus interfaces
• Memory buffer applications
• I/O port expansion

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix '1' against official documentation, as it may indicate a specialized variant or testing condition not present in standard part numbers. Confirm RoHS compliance status via the manufacturer's current datasheet. Check component obsolescence status before finalizing designs, as legacy ALS series parts may have limited long-term availability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal buffering with flexible output drive characteristics. Ensure the application environment stays within the specified 0°C to 70°C temperature range. Verify that the 4.5V to 5.5V supply voltage aligns with the system power rails. Consider the 20-SOIC package dimensions for PCB layout constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments 74ALS (Advanced Low-power Schottky) family, known for improved speed over standard LS logic while maintaining low power consumption. The SN74ALS638A variant specifically provides octal bus functionality, making it suitable for parallel data transmission tasks in microprocessor-based systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Consult official substitution guides for equivalent octal bus transceivers. Standard replacements may include other 74ALS638 variants or compatible devices from the same logic family. Verify pin compatibility and electrical specifications before swapping components.