SN74HC125D

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC125D is a quadruple bus buffer gate manufactured by Texas Instruments, featuring non-inverting logic and three-state outputs. It operates within a supply voltage range of 2 V to 6 V. The device provides high-level output current of -7.8 mA and low-level output current of 7.8 mA. Static current consumption is specified at 8 uA, with a maximum operating supply current of 160 uA. Propagation delay varies from 150 ns at 2 V to 25 ns at 6 V. It functions reliably across an operating temperature range of -40°C to +85°C and is housed in a 14-SOIC surface-mount package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates four independent non-inverting buffers with dedicated output enable controls for each channel.
• Provides three-state outputs that allow connection to shared data buses without signal contention.
• Utilizes CMOS technology to ensure low static power consumption while maintaining robust noise immunity.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock buffering and distribution circuits
• Data acquisition systems requiring signal isolation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer lot code and date code upon receipt to ensure component authenticity and traceability. Confirm that the physical marking on the SOIC-14 package matches the SN74HC125D designation exactly. Check for any manufacturing change notices (PCN) related to packaging or material composition updates. Ensure storage conditions comply with moisture sensitivity level requirements before soldering.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring multiple buffered signals with independent control over output states. The wide supply voltage range supports compatibility with various digital logic families. Consider the propagation delay specifications relative to system clock speeds to ensure timing margins are met. Verify that the thermal characteristics of the SOIC-14 package suit the intended PCB layout and ambient operating environment.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HC series of high-speed CMOS logic devices produced by Texas Instruments. It serves as a standard interface solution for connecting microprocessors to peripheral devices. The device is functionally compatible with other industry-standard quadruple bus buffers but offers specific electrical characteristics defined by the manufacturer's datasheet.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC125DR

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the output enable pins?

The output enable pins control the state of the three-state outputs. When asserted, they place the outputs in a high-impedance state, effectively disconnecting them from the bus.

How does the propagation delay vary with supply voltage?

Propagation delay decreases as supply voltage increases. It is specified at 150 ns at 2 V, 30 ns at 4.5 V, and 25 ns at 6 V.