Texas Instruments SN74LVC126ABQAR

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Product attributes Property Value
Manufacturer Texas Instruments
Product Series 74LVC
Packaging Cut Tape (CT) | Tape & Reel (TR)
Part Status Active
Logic Type Buffer, Non-Inverting
Number of Elements 4
Number of Bits per Element 1
Input Type -
Output Type 3-State
Current - Output High, Low 24mA, 24mA
Voltage - Supply 1.65V ~ 3.6V
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 14-WFQFN Exposed Pad
Supplier Device Package 14-WQFN (3x2.5)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The SN74LVC126ABQAR is a high-performance quadruple non-inverting buffer from Texas Instruments, part of the 74LVC logic family. It operates over a wide supply voltage range of 1.65V to 3.6V, making it ideal for low-power and mixed-voltage applications. Each of its four channels features a 3-state output capable of sourcing or sinking 24mA, enabling direct drive of bus lines or LEDs. Housed in a compact 14-WFQFN package, this buffer is designed for space-constrained industrial, automotive, and consumer electronics where signal integrity and thermal performance are critical.

  • Wide 1.65V to 3.6V Supply Range: Compatible with 2.5V and 3.3V logic, simplifying mixed-voltage design.
  • High 24mA Output Drive: Ensures robust signal transmission over long traces and multiple loads.
  • 3-State Outputs: Enables bus sharing and isolation, preventing data corruption.
  • Extended Temperature Range (-40°C to 125°C): Reliable in harsh automotive and industrial environments.
  • Compact WFQFN Package: Saves board space while providing excellent thermal dissipation.

Bus Interfacing in Mixed-Voltage Systems

The 3-state outputs and 1.65V-3.6V range allow direct interfacing between 2.5V and 3.3V logic blocks, preventing bus contention and signal degradation.

Signal Buffering for High-Speed Data Lines

With 24mA output drive capability, this buffer can strengthen weak signals from microcontrollers to drive longer PCB traces or multiple loads without distortion.

Level Shifting for Peripheral Communication

Use it to shift logic levels between a 3.3V MCU and 1.8V sensors or memory modules, ensuring reliable I2C or SPI communication.

Driving LED Arrays in Industrial Controls

The high sink/source current (24mA) can directly drive LEDs in indicator panels, simplifying driver circuitry in PLCs and HMIs.

Memory Address/Data Bus Isolation

In embedded systems, the 3-state outputs can isolate the CPU from memory during reset or power-down, protecting data integrity.

Automotive ECU Signal Conditioning

With a -40°C to 125°C range, it buffers sensor signals in engine control units, ensuring stable operation under extreme temperatures.

Q: What is the logic family of the SN74LVC126ABQAR?
A: It belongs to the 74LVC logic family, known for low-voltage operation and high-speed performance.
Q: What is the function of this IC?
A: It is a quadruple bus buffer with non-inverting outputs, ideal for signal buffering and driving bus lines.
Q: How many channels does it have?
A: It features 4 independent buffer channels, each with a 3-state output.
Q: What is the output type?
A: The outputs are 3-State, allowing connection to shared buses with high-impedance states.
Q: What is the operating voltage range?
A: It operates from 1.65V to 3.6V, making it suitable for low-voltage 3.3V and lower systems.
Q: What package is available?
A: It comes in a 14-WFQFN exposed pad package, which aids in thermal dissipation.
Base Product Number : SN74LVC126A
1.65V-3.6V 3-State 4-channel 74LVC Automotive Buffer Bus Interface Industrial Logic IC Signal Buffering WFQFN
Q: What is the logic family of the SN74LVC126ABQAR?
A: It belongs to the 74LVC logic family, known for low-voltage operation and high-speed performance.
Q: What is the function of this IC?
A: It is a quadruple bus buffer with non-inverting outputs, ideal for signal buffering and driving bus lines.
Q: How many channels does it have?
A: It features 4 independent buffer channels, each with a 3-state output.
Q: What is the output type?
A: The outputs are 3-State, allowing connection to shared buses with high-impedance states.
Q: What is the operating voltage range?
A: It operates from 1.65V to 3.6V, making it suitable for low-voltage 3.3V and lower systems.
Q: What package is available?
A: It comes in a 14-WFQFN exposed pad package, which aids in thermal dissipation.