M74HC190RM13TR
Manufacturers：
ST
Description：
IC COUNTR UP/DN 4BIT SYNC 16SOIC
M74HC191B1R
Manufacturers：
ST
Description：
IC COUNTER UP/DN 4BIT SYNC 16DIP
M74HC192RM13TR
Manufacturers：
ST
Description：
IC COUNTR DECADE U/D SYNC 16SOIC