SN74HC193N
Manufacturers：
Texas Instruments
Description：
IC 4-BIT UP/DOWN COUNTER 16-DIP
SN74HC193NE4
Manufacturers：
Texas Instruments
Description：
IC COUNTER 4BIT SYNC U/D 16-DIP
SN74HC193NSR
Manufacturers：
Texas Instruments
Description：
IC BINARY COUNTER UP/DOWN 16SO