CD74HC251M96

Overview

The CD74HC251M96 is an 8-input multiplexer from the HC/UH series manufactured by Harris Corporation. It features a single circuit with eight data inputs, three address select lines, and one true output. The device utilizes CMOS technology and operates within a supply voltage range of 2V to 6V. It supports a wide operating temperature range from -55°C to 125°C. The component is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Provides multiplexing capability from eight input lines to a single output line
• Features high-speed Si-gate CMOS construction compatible with low power Schottky TTL logic levels
• Includes active-low enable functionality for controlled signal routing

Applications

• Data routing in digital communication systems
• Signal selection in measurement instrumentation
• Address decoding in microprocessor-based control circuits

Procurement Notes

Verify the manufacturer origin as Harris Corporation rather than Texas Instruments, as the CD prefix denotes Harris heritage. Confirm the suffix M96 indicates specific tape-and-reel packaging or processing variations compared to standard SOIC versions. Ensure compliance with RoHS directives if required, noting that older Harris production may differ from current TI standards.

Selection Notes

Select this component when an 8-to-1 multiplexer with 3-state outputs is required in a compact surface-mount format. The HC series offers higher speed than legacy LS counterparts while maintaining pin compatibility. Verify that the 2V to 6V supply range aligns with the system's power architecture and that the -55°C to 125°C temperature rating meets environmental specifications.

Part Context

This part belongs to the widely used 74HC logic family, standardized for CMOS performance. The CD74HC251 variant specifically provides eight inputs with three address bits. The M96 suffix typically distinguishes packaging or manufacturing lot specifics within the Harris product line before its acquisition by Texas Instruments.

Replacement Considerations

The CD74HC251M96 is obsolete. Verified substitutes include the CD74HC251M96 from Texas Instruments, which maintains functional equivalence. Other compatible options include the SN74HC251 series from various manufacturers offering identical pinouts and electrical characteristics.