SN74AC14D

Overview

The SN74AC14D is a hex Schmitt trigger inverter manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -40°C to +85°C. The device features six independent inverters with Schmitt-trigger inputs, packaged in a 14-pin SOIC (0.154 inch width). It exhibits a maximum propagation delay of 10 ns at 5 V with 50 pF load, static current of 2 µA, and output drive capability of ±24 mA.

Feature Summary

• Schmitt-trigger inputs provide noise filtering for slow or noisy signals
• High-speed operation with low propagation delay
• Wide power supply voltage compatibility

Applications

• Signal conditioning for noisy environments
• Pulse waveform generation
• Oscillator circuits

Procurement Notes

Verify the package type matches the required footprint, as the 'D' suffix indicates SOIC-14. Confirm RoHS compliance status and check for specific ordering suffixes if tape-and-reel packaging is needed instead of tubes. Ensure the voltage rating aligns with system requirements.

Selection Notes

Select this component when input signal integrity requires hysteresis to prevent false triggering. Compare against standard inverters like SN74AC04 if noise immunity is critical. Consider the AC series for speed advantages over HC variants while maintaining CMOS compatibility.

Part Context

Part of the Texas Instruments 74AC logic family, designed for high-speed digital applications. The SN74AC14 series provides Schmitt-trigger functionality, distinguishing it from standard inverters. It serves as a robust interface between analog-like signals and digital logic systems.

Replacement Considerations

SN74AC14DR: Same function in tape-and-reel packaging. SN74ACT14: TTL-compatible inputs with 5V-only operation. SN74HC14: Slower speed but similar functionality.