74LV125D,112

Overview

The NXP USA Inc. 74LV125D,112 is a low-voltage Si-gate CMOS quad buffer and line driver featuring non-inverting logic with three-state outputs. It operates within a supply voltage range of 1.0 V to 5.5 V and is pin-compatible with 74HC125 and 74HCT125 devices. The component provides four independent buffers controlled by active-low output enable inputs (nOE). It supports TTL input levels between VCC = 2.7 V and VCC = 3.6 V and includes ESD protection exceeding 2000 V (HBM) and 200 V (MM). The device is available in SO14 packages and functions reliably across temperatures from -40 °C to +85 °C or +125 °C.

Feature Summary

• Provides four non-inverting buffer/line drivers with three-state outputs controlled by active-low nOE inputs.
• Operates over a wide supply voltage range of 1.0 V to 5.5 V, optimized for low-voltage applications down to 1.0 V.
• Accepts TTL input levels when the supply voltage is between 2.7 V and 3.6 V.
• Features robust electrostatic discharge (ESD) protection exceeding 2000 V under Human Body Model (HBM) standards.

Applications

• Memory address buffering
• Clock distribution
• Driving bus lines

Procurement Notes

Verify the specific package variant, as the 'D' suffix denotes the SO14 plastic small outline package. Confirm the temperature range requirement, as the datasheet specifies availability for both -40 °C to +85 °C and -40 °C to +125 °C ranges. Ensure compatibility with existing 74HC125 or 74HCT125 footprints if replacing legacy components. Check current product status on official channels as specifications may be subject to revision.

Selection Notes

Select this component for designs requiring low-voltage operation down to 1.0 V while maintaining compatibility with standard 5 V logic families. It is suitable for applications needing high drive capability and three-state control for bus sharing. Consider the thermal derating characteristics above 70 °C for SO14 packages when designing for high ambient temperatures. Verify that the required propagation delay meets system timing constraints at the specific operating voltage.

Part Context

The 74LV125 belongs to the 74LV series of low-voltage CMOS logic devices manufactured by NXP Semiconductors. This series is designed to bridge the gap between older 5 V logic families and modern lower voltage systems. The 'D' in the part number specifically identifies the SO14 surface-mount package type. The device serves as a fundamental building block for digital signal routing and level shifting in mixed-voltage environments.

Replacement Considerations

The 74LV125D,112 is functionally compatible with the 74HC125 and 74HCT125 due to identical pinouts and logical operations. Designers can substitute these parts directly if voltage levels and speed requirements are met. Other manufacturers producing equivalent quad buffer/line drivers with three-state outputs should be evaluated based on their specific electrical characteristics and package dimensions.