CD74HC157EG4

Overview

The CD74HC157EG4 is a high-speed CMOS quad 2-input data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features four independent multiplexers in a single package. The device utilizes a 16-pin PDIP package for through-hole mounting. Key electrical specifications include a propagation delay of 18 ns at 5 V and an operating temperature range from -55 °C to +125 °C. It provides balanced propagation delays and transition times, ensuring reliable signal routing in digital logic applications.

Feature Summary

• Integrates four independent 2-to-1 data selectors within a single integrated circuit package
• Operates across a wide supply voltage range from 2 V to 6 V for flexible system integration
• Features extended industrial temperature ratings suitable for harsh environmental conditions
• Provides balanced propagation delays and transition times for consistent signal timing

Applications

• Signal routing in automated control systems
• Data selection in industrial process control equipment
• Logic switching in consumer electronics
• Multiplexing functions in communication devices

Procurement Notes

Verify the specific EG4 suffix against official Texas Instruments documentation to confirm lead wire composition and RoHS compliance status. Ensure the ordering part number matches the required PDIP-16 package configuration. Cross-reference the manufacturer's latest datasheet to validate current production status and any potential design changes or alternative material declarations before finalizing procurement.

Selection Notes

Select this component when a quad multiplexer configuration is required with through-hole mounting capabilities. The HC series offers lower power consumption compared to LSTTL equivalents while maintaining compatible output drive strengths. Consider the 2 V to 6 V operating range and -55 °C to +125 °C temperature span to ensure compatibility with the target application's electrical and environmental constraints.

Part Context

This component belongs to the Texas Instruments 74HC logic family, which consists of high-speed CMOS devices. The 74HC157 specifically functions as a quad 2-input data selector. It is designed to replace legacy low-power Schottky TTL logic, offering improved power efficiency and wider voltage operation while maintaining standard logic levels and pinout compatibility for direct upgrades in existing designs.

Replacement Considerations

Direct functional substitutes include the SN74HC157N and CD74HC157M. Verify package compatibility, as the original uses a PDIP-16 through-hole format. Ensure that any replacement maintains the same 2 V to 6 V voltage range and industrial temperature specifications to guarantee equivalent performance in the intended application.