SN74AUC1G32DCKR

Overview

The SN74AUC1G32DCKR is a single 2-input positive-OR gate from the Texas Instruments AUC logic family, housed in a SC-70 (SOT-553) package. 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 a maximum propagation delay of 2.4 ns at 1.8 V and supports 3.6-V I/O tolerance for mixed-mode signal operation. Key electrical characteristics include a maximum static current of 10 µA and an output drive capability of ±8 mA at 1.8 V.

Feature Summary

• Supports partial-power-down mode via Ioff circuitry to prevent damaging backflow currents when powered down.
• Provides ESD protection exceeding 2000 V per human-body model and 1000 V per charged-device model standards.
• Optimized for low power consumption with a maximum ICC of 10 µA across the operating voltage range.

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 that the ordering suffix DCKR corresponds to the SC-70 package type and tape-and-reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure the supplier provides documentation matching the specific revision history of the datasheet to guarantee accurate switching characteristics and absolute maximum ratings are applied during design.

Selection Notes

Select this component for designs requiring sub-1-V operation and mixed-mode signal interfacing due to its 3.6-V I/O tolerance. The SC-70 package offers a compact footprint suitable for space-constrained portable electronics. Consider the 2.4 ns maximum propagation delay for high-speed digital logic requirements within the specified temperature range of -40°C to +85°C.

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 while maintaining low power consumption. The SN74AUC1G32 specifically implements the Boolean OR function in positive logic, serving as a fundamental building block for digital signal processing and control circuits.

Replacement Considerations

SN74AUC1G32DCKT is a compatible alternative in the same SC-70 package offering identical logical functionality and electrical specifications.

FAQ

How does the Ioff feature benefit the SN74AUC1G32DCKR?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device into the power supply rails of other active components.

What is the input voltage tolerance of this device?

The inputs are tolerant up to 3.6 V, allowing the device to interface with 3.6-V systems even when operating at lower supply voltages such as 1.8 V or 2.5 V.