MM74HC125N

Buffers, Drivers, Receivers, Transceivers Overview

The MM74HC125N is a quad buffer and line driver manufactured by onsemi, formerly Fairchild Semiconductor. It features four non-inverting buffers with three-state outputs controlled by active-low enable inputs. The device operates within a voltage range of 2.0 V to 6.0 V and utilizes HC-CMOS logic technology. It is housed in a 14-pin Plastic Dual In-Line Package (PDIP) with a standard .300-inch width. The component is lead-free and RoHS compliant, designed for bus-oriented systems and memory address drivers.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides four independent non-inverting buffer channels with high-speed CMOS performance
• Features active-low output enables allowing precise control over data flow direction
• Offers direct interface compatibility with CMOS, NMOS, and TTL loads

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers in computer systems
• Clock signal distribution networks
• Bus-oriented system interconnects

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation carefully, as the MM prefix historically indicates Fairchild Semiconductor products now managed by onsemi. Confirm the package style matches the required DIP-14 footprint for your PCB layout. Ensure the specific revision or date code meets your project's longevity requirements given the component's long-standing market presence.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quad buffer with three-state capability is required for digital signal routing. It serves as a functional equivalent to the LS125 series but offers improved noise immunity and lower power consumption due to its CMOS construction. Verify that the operating voltage range aligns with your system's supply rails before integration.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the widely adopted 74HC logic family, known for high speed and low power dissipation. The MM74HC125N specifically addresses the need for buffered signals in complex digital architectures where multiple devices share common buses. Its pinout compatibility with older LS-series components facilitates easier upgrades in legacy designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the SN74HC125N from Texas Instruments and the MC74HC125N from onsemi. Other compatible options are available from NXP Semiconductors and Diodes Incorporated under the 74HC125 designation. Always verify pinout and electrical specifications match before swapping.