CD74HCT157E

Overview

The CD74HCT157E is a high-speed CMOS logic quad 2-input multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -55°C to +125°C. The device features four independent data selectors, each with two inputs and one output, controlled by a common select line. It utilizes a 16-pin PDIP package for through-hole mounting.

Feature Summary

• Quad configuration providing four independent 2-to-1 data selectors
• High-speed CMOS technology compatible with standard TTL logic levels
• Wide operating temperature range suitable for industrial environments

Applications

• Data routing in digital systems
• Address decoding circuits
• Signal selection in microprocessor interfaces

Procurement Notes

Verify the specific suffix 'E' indicates the PDIP-16 package variant when sourcing. Confirm RoHS compliance status via the manufacturer's official documentation or component marking. Ensure the supply voltage matches the HCT series requirements (4.5V–5.5V) rather than standard HC series ranges. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when a quad 2-input multiplexer is required in a through-hole application. The HCT series ensures compatibility with 5V TTL logic inputs. Consider the PDIP-16 package constraints regarding board space and thermal dissipation. Verify that the propagation delay characteristics meet the timing requirements of the target circuit design.

Part Context

This part belongs to the CD74HCT157 family of quad 2-input multiplexers. It shares functional similarities with the CD74HC157 but differs in input threshold voltages to maintain TTL compatibility. The E suffix specifically denotes the plastic dual-in-line package format, distinguishing it from surface-mount variants like the M suffix.

Replacement Considerations

• CD74HC157E
• SN74HCT157N

FAQ

What is the logic family type of the CD74HCT157E?

It is a High-Speed CMOS (HCT) logic device designed to be compatible with 5V TTL inputs.

How many independent multiplexers are contained in this IC?

The device contains four independent 2-input to 1-output multiplexers.