SN74LS14 Hex Schmitt-Trigger Inverter IC (TTL)
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Prices updated: 13 Oct 2026
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About this product
The SN74LS14 is a 74LS-series TTL IC containing six Schmitt-trigger inverters. The Schmitt input gives hysteresis, so it can clean up slow or noisy signals into sharp digital edges. It is used for signal shaping, switch debouncing and simple oscillators.
Specifications
- Logic family
- 74LS (TTL)
- Function
- Hex Schmitt-trigger inverter
- Number of gates
- 6
- Supply voltage
- 4.75 V to 5.25 V
- Package
- 14-pin DIP / SOIC
Frequently asked questions
What is a Schmitt trigger inverter used for?
It converts slow or noisy input signals into clean square edges, and it is used for debouncing switches and building simple RC oscillators.
Can I use it with a 3.3 V microcontroller?
The SN74LS14 is designed for a 5 V supply. Feeding its inputs from 3.3 V logic usually works, but check that the input high level is met, and never feed 5 V signals into a 3.3 V-only pin without level shifting.
