74LVC2G125DCTR-P2

Overview

The SN74LVC2G125 is a dual bus buffer gate with 3-state outputs designed for 1.65-V to 5.5-V VCC operation. It features dual line drivers where outputs are disabled when the associated output-enable (OE) input is high. The device supports 5-V VCC operation and inputs accept voltages up to 5.5 V. Maximum propagation delay is 4.3 ns at 3.3 V. Output drive capability is ±24 mA at 3.3 V, with typical output ground bounce of 2 V at VCC = 3.3 V and TA = 25°C.

Feature Summary

• Balanced push-pull CMOS outputs provide high drive capability for fast signal edges into light loads.
• Over-voltage tolerant inputs allow signals to be driven above the supply voltage without damage.
• Ioff circuitry disables outputs during partial-power-down to prevent damaging current backflow.
• ESD protection exceeds JESD 22 standards for human-body and charged-device models.

Applications

• Cable modem termination systems
• High-speed data acquisition and generation
• Motor controls involving high-voltage applications
• Power line communication modems

Procurement Notes

Verify the specific package suffix against the datasheet orderable addendum to ensure correct physical dimensions and thermal characteristics. Confirm that the ordering suffix matches the required tape-and-reel or tube packaging format. Ensure the component meets the specified operating temperature range for the intended environment.

Selection Notes

Select this component for applications requiring level translation from 5.5-V logic down to lower VCC levels. Consider the balanced output drive for driving long PCB traces or high-impedance loads. Verify that the input transition rates comply with recommended specifications to avoid excessive currents.

Part Context

This device belongs to the Texas Instruments LVC logic family, which operates across a wide voltage range. It serves as a high-drive buffer suitable for interfacing between different voltage domains in digital systems. The dual configuration allows for efficient space utilization in compact designs.

Replacement Considerations

SN74LVC2G125DCTR

FAQ

How does the device handle partial-power-down conditions?

The Ioff circuitry automatically disables the outputs when the supply voltage drops to 0 V, preventing damaging current backflow through the device.

Can the inputs tolerate voltages higher than VCC?

Yes, the inputs are over-voltage tolerant and can accept voltages up to 5.5 V, allowing them to translate signals from higher voltage sources down to the VCC level.