SN74AUC1G19DBVR

Overview

The SN74AUC1G19DBVR is a single-channel 1-of-2 decoder/demultiplexer from the Texas Instruments AUC logic family. It operates within a supply voltage range of 0.8 V to 2.7 V, with specific optimization for 1.65 V to 1.95 V applications. The device features one data input (A), an active-low enable input (E), and two outputs: Y0 (true) and Y1 (complement). When enabled, it buffers the input signal to both outputs in complementary states. It is housed in a compact SOT-23-6 package.

Feature Summary

• Supports mixed-mode signal operation through 3.6-V I/O tolerance while operating at lower supply voltages.
• Enables partial-power-down mode via dedicated Ioff circuitry that prevents damaging current backflow when powered down.
• Provides robust electrostatic discharge protection exceeding standard industry requirements.

Applications

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

Procurement Notes

Verify the complete part number against official documentation to ensure correct package type and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure design compatibility with recommended operating conditions regarding supply voltage and temperature ranges.

Selection Notes

Select this component for designs requiring low-voltage operation with high-speed decoding capabilities. The SOT-23-6 package offers space efficiency for portable electronics. Consider the 3.6-V I/O tolerance if interfacing with higher voltage domains. Verify thermal performance requirements against junction-to-ambient resistance values for the specific PCB layout.

Part Context

This device belongs to the SN74AUC1G series of sub-1-V Little Logic devices. It is designed specifically for low-power applications requiring fast switching speeds. The AUC series utilizes advanced CMOS technology to achieve high performance at reduced supply voltages compared to traditional logic families.

Replacement Considerations

SN74AUC1G19DCKR

FAQ

How does the device handle partial-power-down scenarios?

The SN74AUC1G19 includes Ioff circuitry that disables the outputs to prevent damaging current backflow through the device when it is powered down.

What is the function of the Enable (E) pin?

The Enable (E) pin is active-low. When E is low, the device passes the data from input A to outputs Y0 and Y1. When E is high, the outputs are disabled.