SN74HC157DT

Overview

The SN74HC157DT is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments in the HC/UH series. It features true outputs and is housed in a 16-pin SOIC package with dimensions of 9.90 mm x 3.90 mm. The device operates on a supply voltage range of 2V to 6V, supporting an operating temperature from -40°C to 85°C. Electrical characteristics include a maximum propagation delay of 32 ns at 6V (CL=50pF) and typical input current of 1µA max.

Feature Summary

• Contains four independent multiplexers controlled by a common address select input
• Features active-low strobe functionality that forces all outputs low when asserted
• Provides TTL-compatible CMOS inputs for direct interfacing with standard logic families

Applications

• Multiplexing and routing 4-bit data buses between source devices
• Data selection systems requiring synchronous channel switching
• Digital signal routing in microcontroller-based architectures

Procurement Notes

Verify component authenticity through authorized distributors or TI directly. Confirm the specific ordering suffix matches the required package type and lead finish. Review the latest datasheet revision history for any updates to electrical parameters or mechanical dimensions before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring high-speed data routing within standard CMOS logic levels. Ensure the design accommodates the specified supply voltage range and thermal dissipation requirements. Verify that the load capacitance does not exceed recommended limits to maintain signal integrity and switching performance.

Part Context

This part belongs to the SNx4HC157 family of quadruple 2-to-1 multiplexers. It shares functional compatibility with other variants in the HC series but differs in packaging and manufacturing status. The DT suffix specifically denotes the SOIC package configuration used in surface-mount assembly processes.

Replacement Considerations

SN74HC157DR is listed as an active production alternative in the same SOIC package.