SN74LS125AD

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS125AD is a quadruple bus buffer with three-state outputs belonging to the LS logic series. It features four non-inverting channels, each with independent control inputs (G) that enable the output when low. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0°C to 70°C. It utilizes a 14-pin SOIC package for surface-mount installation.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides three-state outputs that present high impedance to the bus when disabled, preventing significant loading or driving interference.
• Features separate control inputs for each channel, allowing individual management of data flow on the bus lines.
• Delivers low-impedance characteristics with enhanced drive capability at high logic levels, enabling direct driving of heavily loaded bus lines without external pullup resistors.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and register systems
• Clock drivers
• Bus-oriented communications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity as this part number is listed as obsolete by Texas Instruments. Confirm the manufacturer source, as some distributors list onsemi as the supplier for this specific marking. Ensure compliance with RoHS requirements if applicable to the specific production batch, noting that older versions may not meet current environmental standards.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring quadruple buffering with independent channel control. The LS logic family offers lower power consumption compared to standard TTL. Verify that the required operating temperature range aligns with the commercial grade specifications. Consider the SOIC package dimensions for PCB layout compatibility.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the SN54/74LS125A family of quadruple bus buffers. It shares functional similarities with the SN74LS126 but differs in the active state of the control input; the '125 enables outputs when the control signal is low. The family is designed for bus-driven architectures where multiple sources must share a common data line.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS125ADR