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74LVC126ABQ,115

74LVC126ABQ,115

Nexperia USA Inc.
Buffer, Non-Inverting 4 Element 1 Bit per Element 3-State Output 14-DHVQFN (2.5x3)
Active126,544 in stock
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Overview

The 74LVC126ABQ is a high-performance CMOS quad buffer featuring 3-state outputs and non-inverting logic. It operates over a wide supply voltage range of 1.2V to 3.6V and includes 5.5V tolerant inputs, making it an ideal candidate for mixed-voltage systems. Each of the four independent buffers is controlled by an active-high output enable pin.

Why Choose This Part

This device offers excellent flexibility for low-power designs with its Schmitt-trigger inputs that handle slow-rising signals and its 24mA drive capability. The compact 14-DHVQFN package provides significant board space savings and improved thermal performance compared to traditional SOIC or TSSOP footprints.

Applications

Voltage Level Translation
Interfacing low-voltage logic (down to 1.2V) with 5V systems thanks to overvoltage tolerant inputs.
Bus Driving
Managing high-impedance states on shared communication buses using the 3-state control functionality.
Signal Buffering
Improving signal integrity and driving capacity with 24mA output current for long PCB traces or high-capacitance loads.
Partial Power-Down Isolation
Using IOFF circuitry to prevent backflow current when the device is powered down but signals remain on the I/O pins.

Key Specifications

Logic Type Buffer, Non-Inverting
Output Type 3-State
Mounting Type Surface Mount
Package / Case 14-VFQFN Exposed Pad
Voltage - Supply 1.2V ~ 3.6V
Number of Elements 4
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 14-DHVQFN (2.5x3)
Current - Output High, Low 24mA, 24mA
Number of Bits per Element 1

Getting Started

To evaluate this part, integrate it into a prototype using a DHVQFN-14 to DIP adapter or include it in a custom PCB layout following the 2.5mm x 3mm footprint specifications. Ensure the thermal pad is soldered to a grounded copper plane to optimize heat dissipation and electrical stability.