SN74HC14D

Inverter Gates Overview

The SN74HC14D is a hex Schmitt-trigger inverter manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -40°C to +85°C. The device provides buffered inputs and can drive up to 10 LSTTL loads. Electrical characteristics include a maximum propagation delay of 31ns at 4.5V, with typical values around 25ns. Output drive capabilities reach ±4mA at 4.5V and ±5.2mA at 6V.

Inverter Gates Feature Summary

• Contains six independent inverters with Schmitt-trigger inputs for noise tolerance
• Features buffered inputs and balanced CMOS push-pull outputs
• Supports fanout up to 10 LSTTL loads while maintaining low power consumption

Inverter Gates Applications

• Synchronize inverted clock inputs
• Debounce a switch
• Invert a digital signal

Inverter Gates Procurement Notes

Verify the specific package type matches the required PCB footprint, as the SN74HC14 series is available in multiple configurations including SOIC, SSOP, PDIP, SOP, and TSSOP. Confirm that the ordering suffix corresponds to the desired packaging format and ensure compliance with RoHS standards if applicable to the manufacturing process.

Inverter Gates Selection Notes

Select this component when noisy input signals require hysteresis filtering or when signal inversion is necessary for counter synchronization. The wide voltage range allows compatibility with various logic families. Ensure output capacitive loads remain below recommended limits to maintain switching performance and prevent excessive current draw.

Inverter Gates Part Context

This device belongs to the SNx4HC14 family of hex inverters with Schmitt-trigger inputs. It is part of the broader 74HC series of high-speed CMOS logic devices produced by Texas Instruments. The D suffix specifically denotes the SOIC-14 surface-mount package variant.

Inverter Gates Replacement Considerations

SN74HC14DR

Inverter Gates FAQ

How should unused inputs be handled?

Unused inputs must not be left floating; they should be terminated to either VCC or ground to prevent undefined operational states.

What is the purpose of the Schmitt-trigger inputs?

The Schmitt-trigger architecture provides hysteresis, making the device tolerant to slow or noisy input signals.