CD74HC157MT

Overview

The CD74HC157MT is a high-speed CMOS quad 2-line to 1-line multiplexer from Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features four independent data selectors. The device provides true outputs for each selector and includes an individual strobe (G) input to enable or disable the selected data. Designed for low power consumption, it typically draws only 80 µA. The component supports propagation delays as low as 11 ns at 5 V and can drive up to 15 LSTTL loads. It is available in a TSSOP-16 package suitable for surface-mount applications.

Feature Summary

• Contains four independent 2-to-1 data selectors with true outputs
• Features individual strobe inputs for precise control of each selector
• Supports wide supply voltage operation from 2 V to 6 V
• Provides low power consumption with minimal quiescent current

Applications

• Data routing in digital logic systems
• Signal selection in microprocessor interfaces
• Address/data bus switching
• General-purpose data selector circuits

Procurement Notes

Verify the specific suffix 'MT' against official Texas Instruments documentation to confirm the exact tape-and-reel packaging configuration and temperature grade. Ensure compatibility with standard surface-mount assembly processes. Cross-reference the part number with the latest datasheet revision to confirm pinout and electrical characteristics remain unchanged.

Selection Notes

Select this component when a compact surface-mount solution for multiple 2-to-1 signal paths is required. The HC series offers speed and power efficiency comparable to older TTL technologies while maintaining broader voltage flexibility. Consider the TSSOP-16 package constraints regarding thermal dissipation and board space availability during layout planning.

Part Context

This device belongs to the SN74HC family of high-speed CMOS logic devices. It functions similarly to other quad multiplexers but is distinguished by its specific surface-mount packaging and standardized logic interface. The HC technology ensures compatibility with various digital systems requiring low power and moderate speed performance.

Replacement Considerations

Check for direct equivalents such as the SN74HC157 in different packages or compatible parts from other manufacturers adhering to the same JEDEC standards. Verify that any substitute maintains the same pinout and electrical specifications to ensure seamless integration without circuit redesign.