74LVC1G126GW-Q100H

Overview

The Nexperia 74LVC1G126GW-Q100H is a single non-inverting bus buffer and line driver with three-state outputs, housed in a TSSOP5 (SOT353-1) package. It operates within a supply voltage range of 1.65 V to 5.5 V and supports an input voltage up to 5.5 V. The device features Schmitt-trigger inputs for noise immunity and includes IOFF circuitry to prevent backflow current during partial power-down states. Qualified to AEC-Q100 Grade 1 standards, it functions reliably across temperatures from -40 °C to +125 °C.

Feature Summary

• Provides three-state output control via the OE pin to isolate downstream circuits.
• Incorporates IOFF circuitry to disable outputs and block damaging backflow currents when powered down.
• Features Schmitt-trigger action at all inputs to tolerate slower rise and fall times.
• Supports direct interface with TTL levels and mixed 3.3 V and 5 V environments.

Applications

• Automotive engine control units
• Body control modules
• Transmission control units

Procurement Notes

Verify the specific suffix 'GW' corresponds to the TSSOP5 plastic thin shrink small outline package with a body width of 1.25 mm. Confirm that the component meets the Automotive Electronics Council Q100 Grade 1 qualification requirements for your target application environment. Ensure the ordering documentation references the correct marking code 'VN' for identification purposes.

Selection Notes

Select this component when a single-channel, non-inverting buffer with high noise immunity is required. The inclusion of IOFF circuitry makes it suitable for systems requiring partial power-down capabilities without risking backflow damage. Verify that the operating temperature range of -40 °C to +125 °C aligns with your system's thermal constraints.

Part Context

This part belongs to the Nexperia 74LVC1G126-Q100 family of automotive-grade logic devices. It is designed as a robust solution for signal buffering in mixed-voltage digital systems. The device complements other single-function gates and buffers within the LVC series, offering a compact footprint and reliable performance in demanding electronic environments.

Replacement Considerations

The datasheet lists the 74LVC1G126GV-Q100 (SC-74A package) and 74LVC1G126GZ-Q100 (XSON5 package) as alternative package options within the same functional family. No cross-family substitutes are explicitly confirmed in the provided documentation.

FAQ

How does the IOFF circuitry function?

The IOFF circuitry disables the output when the device is powered down, preventing potentially damaging backflow current through the device.

What is the purpose of the Schmitt-trigger inputs?

Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times, enhancing noise immunity.