SN74AHCT14PW

Overview

The SN74AHCT14PW is a hex Schmitt-trigger inverter manufactured by Texas Instruments, belonging to the 74AHCT logic family. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible input thresholds with CMOS output levels. The device contains six independent inverting channels, each equipped with Schmitt-trigger inputs to ensure clean signal transitions. It is housed in a 14-TSSOP surface-mount package with a maximum propagation delay of 12ns at 5V and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Hex Schmitt-trigger inverter configuration for noise-immune signal conditioning
• TTL-compatible input thresholds ensuring direct interface with TTL logic sources
• CMOS output levels providing high noise immunity and low power consumption
• Balanced push-pull outputs designed for robust driving capabilities

Applications

• Signal conditioning for noisy digital environments requiring hysteresis
• Pulse generation and timing circuits utilizing precise threshold control
• Level shifting between TTL and CMOS logic domains
• Oscillator circuits relying on stable switching characteristics

Procurement Notes

Verify the specific suffix 'PW' corresponds to the 14-TSSOP package variant during sourcing. Confirm RoHS3 compliance status as per current manufacturer documentation. Check for any Product Change Notifications (PCN) regarding lead finish or packaging updates that may affect assembly processes. Ensure the component meets the required industrial temperature grade specifications for the intended application environment.

Selection Notes

Select this component when TTL-compatible inputs are required alongside CMOS performance characteristics. The Schmitt-trigger feature is essential for applications involving slow-rise or slow-fall time signals to prevent multiple triggering. Compare propagation delays and drive strengths against other AHCT variants if higher speed or different packaging options are needed. Verify that the 4.5V to 5.5V supply range aligns with the system power architecture.

Part Context

This part belongs to the Texas Instruments 74AHCT series, which combines the high-speed performance of Advanced CMOS technology with the compatibility of HC logic families. The SN74AHCT14 specifically provides six inverters, distinguishing it from non-inverting buffers like the SN74AHCT244 or transceivers like the SN74AHCT541. It serves as a fundamental building block for digital logic design requiring signal inversion and noise rejection.

Replacement Considerations

SN74AHCT14PWR: Same logical function and pinout but packaged in tape-and-reel format instead of tube.