SN74LVTH126DGVR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH126DGVR is a quad bus buffer from the LVTH logic family, designed for low-voltage 3.3-V VCC operation with TTL interface capability to 5-V systems. It features independent line drivers with 3-state outputs and operates within a supply voltage range of 2.7 V to 3.6 V. The device supports unregulated battery operation down to 2.7 V and includes active bus-hold circuitry on data inputs. It provides Ioff and power-up 3-state support for hot-insertion applications. The component is housed in a TVSOP-14 package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation allowing 5-V input and output voltages with 3.3-V VCC
• Features active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors
• Provides Ioff and power-up 3-state functionality to prevent damaging current backflow during hot insertion
• Includes latch-up performance exceeding 100 mA per JESD 78, Class II requirements

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal interfacing between 3.3-V and 5-V system environments
• Unregulated battery-powered equipment requiring operation down to 2.7 V
• Hot-insertion applications utilizing Ioff and power-up 3-state protection

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix DGVR corresponds to the TVSOP-14 tape and reel packaging configuration. Confirm that the part number matches the SN74LVTH126 series specifications rather than similar variants like SN74LVTH125. Ensure compliance with RoHS directives and check for any recent product change notices affecting manufacturing status or material composition prior to final procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring non-inverting quad bus buffering with 3-state control in a 3.3-V environment. It is suitable for interfaces needing tolerance to 5-V signals while maintaining low-voltage operation. Consider the TVSOP-14 package constraints for PCB layout. Verify that the required propagation delay and drive current meet the specific application timing and load requirements defined in the electrical characteristics.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to Texas Instruments' LVTH logic family, which bridges low-voltage CMOS technology with TTL-compatible input levels. The SN74LVTH126 variant specifically offers four independent buffers with output enable controls. It is part of a broader portfolio including inverters and NAND gates within the same logic family, sharing common packaging and operational characteristics for system integration.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH126D (SOIC-14 tube)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

The SN74LVTH126DGVR features active bus-hold circuitry on its data inputs, which holds unused or undriven inputs at a valid logic state without requiring external pullup or pulldown resistors.

What is the function of the OE pin?

The Output Enable (OE) pin controls the 3-state output. When OE is low, the associated output is enabled; when OE is high, the output enters a high-impedance state.