SN74AUC1G125DCKR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AUC1G125DCKR is a single bus buffer gate with 3-state output from the Texas Instruments AUC logic family. It operates within a supply voltage range of 0.8 V to 2.7 V and is optimized for 1.65-V to 1.95-V operation. The device features over-voltage tolerant I/Os supporting up to 3.6 V independent of VCC, an Ioff feature for partial power down mode, and low power consumption with a maximum ICC of 10 µA. It provides ±8-mA output drive at 1.8 V and achieves a maximum propagation delay (tpd) of 2.5 ns at 1.8 V with a 30 pF load.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Single line driver with 3-state output functionality
• Over-voltage tolerant I/Os support up to 3.6 V independent of VCC
• Ioff circuitry supports partial power down mode and back drive protection
• Optimized for high-speed operation between 1.65-V and 1.95-V VCC

Buffers, Drivers, Receivers, Transceivers Applications

• Redrive digital signals
• Enable or disable a digital signal
• Drive transmission lines with logic

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package suffix DCK corresponds to the SC70-5 footprint required for your PCB layout. Confirm that the ordering suffix matches the exact reel quantity and lead finish specifications listed in the manufacturer's orderable addendum. Ensure compatibility with your system's voltage levels and thermal requirements before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a single-channel buffer with 3-state control is needed for low-voltage applications. It is suitable for systems requiring over-voltage tolerance on inputs and outputs without external level shifting. Consider its speed and drive strength for driving short controlled impedance transmission lines directly.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments AUC logic family, which is designed specifically for speed and optimized for sub-2-V operation. The AUC family utilizes ULTTL output drivers to provide balanced sourcing and sinking capabilities while minimizing switching noise. This technology allows for excellent signal integrity when driving moderate-length transmission lines without external termination.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AUC1G125DBVR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the Ioff feature function?

The Ioff circuitry disables all outputs when the supply pin is held at 0 V. When disabled, the outputs neither source nor sink current, preventing damaging current backflow through the device during partial power-down scenarios.

What is the recommended handling for unused inputs?

Unused inputs must not be left floating. They should be terminated at VCC or GND to prevent undefined operational states and excessive power consumption. A pull-up or pull-down resistor is recommended if the input is not actively driven.