SN74AUC1G14DBVR

Overview

The SN74AUC1G14DBVR is a single Schmitt-trigger inverter from the Texas Instruments AUC logic family, housed in a five-pin SOT-23 package. It operates within a supply voltage range of 0.8 V to 2.7 V and supports 3.6-V I/O tolerance for mixed-mode applications. The device features a maximum propagation delay of 2.5 ns at 1.8 V with a 30-pF load, alongside a maximum static current consumption of 10 µA. It includes dedicated Ioff circuitry to prevent backflow during partial-power-down states.

Feature Summary

• Schmitt-trigger action provides distinct input threshold levels for positive-going and negative-going signals to ensure clean switching.
• Ioff circuitry disables outputs to prevent damaging current backflow when the device is powered down.
• ESD protection ratings exceed JESD standards for human-body, machine, and charged-device models.

Applications

• Portable audio devices such as MP3 players and recorders
• Solid-state drives for client and enterprise storage
• Wireless peripherals including headsets, keyboards, and mice

Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm active production status and lead finish specifications. Ensure the selected variant matches the required moisture sensitivity level and operating temperature range for the intended assembly process.

Selection Notes

Select this component for designs requiring sub-1-V operation or mixed-voltage signal translation between 1.8-V and 3.6-V domains. The low power consumption and high ESD robustness make it suitable for battery-powered portable electronics where space constraints necessitate the compact SOT-23 form factor.

Part Context

This device belongs to the SN74AUC1G series of Little Logic devices designed for ultra-low voltage applications. The AUC family utilizes advanced CMOS technology to achieve high speed and low power dissipation compared to legacy logic families, specifically targeting modern portable consumer electronics and embedded systems.

Replacement Considerations

SN74AUC1G14DCKR (SC70 package)

FAQ

How does the Schmitt-trigger feature benefit signal integrity?

It provides different input threshold voltages for rising and falling edges, which filters out noise and prevents output oscillation caused by slow-moving input signals.

What is the function of the Ioff circuitry?

The Ioff circuitry ensures that outputs are disabled when the device is in a partial-power-down state, preventing excessive current from flowing back through the inputs into the power supply.