CD74HC125E

Overview

The CD74HC125E is a high-speed CMOS logic quad buffer manufactured by Harris Corporation. It features four independent 1-bit buffers with true outputs and three-state capabilities controlled by low-enable signals. The device utilizes a 14-pin plastic dual in-line package (PDIP). It operates within a temperature range of -55 °C to 125 °C and supports a maximum output load capacitance of 50 pF. The maximum low-level output current is specified at 0.006 A.

Feature Summary

• Provides four independent unidirectional buffering channels for signal isolation
• Features three-state outputs controlled by active-low enable inputs
• Constructed using high-speed CMOS technology for low power consumption

Applications

• Bus-oriented memory and address drivers
• Clock distribution and buffering circuits
• Data bus transceivers requiring tri-state control

Procurement Notes

Verify the manufacturer origin, as Texas Instruments acquired Harris Semiconductor's logic product line. Confirm RoHS compliance status, as original Harris versions may not meet current environmental standards compared to TI equivalents. Ensure the PDIP-14 package matches the target PCB footprint requirements.

Selection Notes

Select this component when a quad buffer with tri-state functionality is required for HC series logic applications. It serves as a direct functional replacement for other 74HC125 variants, provided the package style and voltage compatibility align with the system design constraints.

Part Context

This part belongs to the 74HC/UH logic family, characterized by wide supply voltage ranges and compatibility with standard CMOS logic levels. It is functionally equivalent to the SN74HC125 series produced by Texas Instruments following the acquisition of Harris Semiconductor assets.