74AHCT1G14QW5-7

Overview

The 74AHCT1G14QW5-7 is an automotive-compliant Schmitt-trigger inverter manufactured by Diodes Incorporated. It operates within a supply voltage range of 4.5V to 5.5V and supports ambient temperatures from -40°C to +125°C. The device features balanced propagation delays, CMOS low-power consumption, and ±8mA output drive capability at 5.0V. It includes ESD protection exceeding 2000V (HBM) and 1000V (CDM), with latch-up resistance exceeding 100mA.

Feature Summary

• Schmitt-trigger action provides tolerance for slower input rise and fall times
• AEC-Q100 qualified for Grade 1 automotive applications
• Standard push-pull output configuration
• Inputs are not limited by VCC

Applications

• Automotive applications within Grade 1 temperature range
• Industrial computing, controls, and automation
• High reliability networking and communications
• Industrial and agricultural equipment

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the QW5 variant utilizes SOT25 packaging while other suffixes may indicate different physical dimensions. Confirm that the component meets AEC-Q100 qualification requirements if the design targets automotive grade specifications. Ensure compliance with IATF 16949 manufacturing standards for intended use cases requiring specific change control protocols.

Selection Notes

Select this component when a single Schmitt-trigger inverter is required for 5V logic systems operating under automotive environmental conditions. The AHCT family ensures TTL-compatible input thresholds while maintaining CMOS power efficiency. Verify that the SOT25 package footprint aligns with the PCB layout constraints and that the thermal resistance characteristics are sufficient for the expected power dissipation levels.

Part Context

This part belongs to the 74AHCT logic family, which combines high-speed CMOS performance with TTL-compatible inputs. The '1G' designation indicates a single gate per package, optimizing board space. The 'Q' suffix signifies AEC-Q100 qualification, distinguishing it from standard commercial variants. It serves as a noise-immune interface solution for digital signal conditioning in harsh environments.

Replacement Considerations

The 74AHCT1G14QSE-7 is a confirmed substitute offering identical electrical functionality but housed in a SOT353 package instead of SOT25. Designers must verify pinout compatibility and mechanical footprint differences before swapping between these two package options.

FAQ

What is the hysteresis voltage specification?

The hysteresis voltage (ΔVT) ranges from 0.35V to 1.6V depending on the supply voltage and operating temperature.

How does the device handle unused inputs?

Unused inputs should be held at VCC or Ground to prevent undefined states and excessive current consumption.