BUY HCF4019BE https://www.utsource.net/itm/p/958011.html
"HEX ""D"" - TYPE FLIP-FLOP"
Description:
HCF4019BE is a dual 4-input NAND Schmitt trigger manufactured by STMicroelectronics.
Features:
Low power consumption
High noise immunity
High input impedance
High speed
Low input current
Low output saturation voltage
High input sensitivity
Wide supply voltage range
Applications:
Digital logic gates
Flip-flops
Counters
Data selectors
Encoders
Decoders
Multiplexers
Signal conditioning
Pulse generation
Timing circuits
Oscillators
(For reference only)