CD74HCT257E

Overview

The CD74HCT257E is a quad 2-input multiplexer manufactured by Texas Instruments, belonging to the HCT logic series. It features four independent data selectors with three-state outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device utilizes a 16-pin PDIP package designed for through-hole mounting. It supports a wide operating temperature range from -55 °C to +125 °C and exhibits a propagation delay of 41 ns.

Feature Summary

• Integrates four independent 2-to-1 data selectors within a single integrated circuit
• Provides high-impedance three-state outputs for effective bus line driving
• Compatible with standard CMOS logic using TTL-compatible input levels

Applications

• Data routing in digital signal processing systems
• Address decoding for memory selection
• I/O expansion in microcontroller-based designs

Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to ensure authenticity. Confirm that the component matches the required PDIP-16 through-hole package and HCT logic family specifications before integration into production workflows.

Selection Notes

Select this component when a design requires multiple independent 2-input multiplexing functions with three-state output control. The HCT series ensures compatibility with TTL-driven interfaces while maintaining low power consumption typical of CMOS technology.

Part Context

This component belongs to the Texas Instruments CD74HCT257 series, which provides quad 2-input multiplexers. The 'E' suffix indicates a leaded (PDIP) package variant, distinguishing it from surface-mount options like the 'D' or 'M96