CD74HC257E

Overview

The CD74HC257E is a quad 2-input multiplexer manufactured by Texas Instruments, belonging to the HC logic series. It features four independent data selectors with non-inverting outputs and three-state control. The device operates within a supply voltage range of 2 V to 6 V and supports through-hole mounting in a PDIP-16 package. It provides four bits of data selection capability with a propagation delay of 15 ns at typical conditions. The component functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Integrates four independent 2-to-1 data selectors within a single integrated circuit
• Provides tri-state output capability for efficient bus-oriented communication architectures
• Supports wide supply voltage operation ranging from 2 V to 6 V for flexible system integration

Applications

• Data routing in digital signal processing systems
• Address decoding and memory selection circuits
• Bus switching applications requiring multiple independent channels

Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure the selected variant matches the required operating temperature range and pin configuration for your PCB layout. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and compliance status.

Selection Notes

Select this component when designing systems requiring multiple independent 2-input multiplexing functions with tri-state outputs. The HC logic family offers compatibility with standard CMOS interfaces while maintaining low power consumption. Consider the PDIP-16 package constraints for through-hole assembly processes and verify that the 2 V to 6 V supply range aligns with your system's power distribution network.

Part Context

This part belongs to the Texas Instruments CD74HC257 family of high-speed CMOS logic devices. The HC series is designed for general-purpose digital applications requiring fast switching speeds and low static power dissipation. The CD74 prefix indicates commercial grade temperature rating and standard packaging options suitable for mass production environments.

Replacement Considerations

Compatible substitutes include the SN74HC257E from Texas Instruments or equivalent parts from other manufacturers offering quad 2-input multiplexers with tri-state outputs in PDIP-16 packages. Verify pinout compatibility and electrical characteristics before substitution.