ON Semiconductor
Hex Schmitt-Trigger Inverter
NXP Semiconductors.
Hex inverting Schmitt trigger
Motorola => Freescale
HEX Schmitt-Trigger Inverter High-Performance Silicon-Gate CMOS
Tiger Electronic
High-Speed Cmos Logic Hex Inverting Schmitt Trigger
Diodes Incorporated.
HEX INVERTERS WITH SCHMITT TRIGGER INPUTS
NXP Semiconductors.
Triple 3-input AND gate