SCHMITT TRIGGERS DUAL GATE/HEX INVERTER The SN54LS.
SN54LS13J - SCHMITT TRIGGERS DUAL GATE/HEX INVERTER
SCHMITT TRIGGERS DUAL GATE/HEX INVERTER The SN54LS/ 74LS13 and SN54LS / 74LS14 contain logic gates / inverters which accept standard TTL input signals.