SN74HC257DG4

Overview

The SN74HC257DG4 is a quad 2-to-1 data selector/multiplexer manufactured by Texas Instruments. It features four independent channels, each selecting between two inputs based on shared address lines. The device operates within a supply voltage range of 2 V to 6 V and includes three-state outputs controlled by an output enable input. It utilizes the HC logic series for CMOS compatibility and is housed in a 16-pin SOIC-Narrow package.

Feature Summary

• Contains four independent 2-to-1 multiplexing channels with shared selection controls
• Provides three-state outputs that can drive bus systems without loading data lines
• Operates across a wide supply voltage range from 2 V to 6 V

Applications

• Data routing in digital systems
• Bus-oriented communication architectures
• I/O expansion circuits

Procurement Notes

Verify the specific suffix 'DG4' against the manufacturer's current datasheet to confirm RoHS compliance status and exact pinout configuration. Ensure the ordering part number matches the required package style and environmental specifications for your design.

Selection Notes

Select this component when designing systems requiring multiple independent data paths with tri-state control. Verify that the 2 V to 6 V operating range aligns with your system power rails and that the propagation delay meets your timing requirements.

Part Context

This part belongs to the SN74HC257 family of high-speed CMOS logic devices. It serves as a standard solution for managing multiple data sources in microprocessor-based systems. The device is widely used in general-purpose digital electronics where reliable signal switching is required.

Replacement Considerations

Compatible substitutes include the SN74HC257DR and SN74HC257D. Verify pin compatibility and electrical characteristics before substitution.