SN74AHCT1G14DBVR Single Schmitt-Trigger Inverter Gate, SOT23-5, Qty.10 | eBay
inverter - Control multiple Schmitt Trigger oscillators from a single current sink - Electrical Engineering Stack Exchange
ON Semiconductor NL17SZ14DFT2G Logic Single-gate NL17SZ Series 3.25 V SMT Single Inverter with Schmitt Trigger - SOT-353-250 Item(s): Amazon.com: Industrial & Scientific
Schmitt trigger - Wikipedia
What is Schmitt Trigger, How it Works and Applications