SN74AUC14RGYRG4

Overview

The SN74AUC14RGYRG4 is a hex Schmitt-trigger inverter from the AUC logic series, manufactured by Texas Instruments. It operates within a supply voltage range of 0.8 V to 2.7 V and features six independent inverters with distinct positive-going (VT+) and negative-going (VT–) input threshold levels. The device supports mixed-mode signal operation, being 3.6-V I/O tolerant despite low-voltage operation. Key electrical parameters include a maximum propagation delay of 2 ns at 1.8 V, ±8-mA output drive capability, and a maximum ICC of 10 mA. It utilizes a 14-pin VQFN package.

Feature Summary

• Incorporates Schmitt-trigger action to provide different input threshold levels for positive-going and negative-going signals, enhancing noise immunity.
• Supports partial-power-down mode via Ioff circuitry that disables outputs to prevent damaging current backflow when powered down.
• Designed specifically for 1.65-V to 1.95-V operation while remaining operational across a broader 0.8-V to 2.7-V range.

Applications

• Mixed-mode signal processing applications requiring 3.6-V I/O tolerance
• Partial-power-down system designs utilizing Ioff functionality
• Low-voltage digital logic inversion circuits

Procurement Notes

Verify the specific ordering suffix against the Package Option Addendum to confirm the exact tape and reel configuration and moisture sensitivity level. Ensure the procurement matches the active production status indicated in official documentation. Confirm RoHS compliance and lead finish specifications align with assembly requirements before finalizing orders.

Selection Notes

Select this component for applications requiring precise hysteresis characteristics provided by Schmitt-trigger inputs. Consider the 0.8-V to 2.7-V operating range for ultra-low voltage systems. Evaluate the 3.6-V I/O tolerance if interfacing with higher voltage domains. Verify thermal impedance and package constraints for the VQFN-14 form factor during PCB layout.

Part Context

This part belongs to the SN74AUC14 family of hex Schmitt-trigger inverters. It shares functional similarities with other AUC series devices but is distinguished by its specific Schmitt-trigger input characteristics and low-voltage optimization. The RGY suffix denotes the 14-pin VQFN package type used for surface-mount applications.

Replacement Considerations

Consult the TI Product Folder Link for SN74AUC14 to identify direct replacements or pin-compatible alternatives. Verify that any substitute maintains the same Schmitt-trigger functionality and 3.6-V I/O tolerance specifications.

FAQ

What is the function of the Ioff circuitry in this device?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device during partial-power-down operations.

How does the Schmitt-trigger action affect input thresholds?

It provides different input threshold levels for positive-going (VT+) and negative-going (VT–) signals, which helps eliminate noise-induced switching errors.