M74HC191 4 BIT SYNCHRONOUS UP/DOWN COUNTERS s HI.
STMicroelectronics
M74HC191 - 4-BIT SYNCHRONOUS UP/DOWN COUNTERS
M74HC191 4 BIT SYNCHRONOUS UP/DOWN COUNTERS s HIGH SPEED : fMAX = 61 MHz (TYP.) at VCC = 6V s LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C s.
National Semiconductor
MM74HC191 - Synchronous Binary Up/Down Counters
MM54HC190 MM74HC190 MM54HC191 MM74HC191 January 1988 MM54HC190 MM74HC190 Synchronous Decade Up Down Counters with Mode Control MM54HC191 MM74HC191.
