IC, 74HC CMOS, 74HC191, DIP16, 5V; Counter Type:Binary; Clock Frequency:39MHz; Count Maximum:15; Supply Voltage Range:2V to 6V; Logic Case Style:DIP; No. of Pins:16; Operating Temperature Range:-40°C to +125°C; SVHC:No SVHC (19-Dec-2011); Base Number:74; Clock Frequency Max:36MHz; Count Max:16; Counter Measuring Functions:Presettable Synchronous Binary Up / Down Counter; Device Marking:74HC191; IC Generic Number:74HC191; Logic Function Number:74191; Logic IC Base Number:74191; Logic IC Family:HC; Logic IC Function:Presettable Synchronous 4bit Binary Up/Down Counter; Operating Temperature Max:125°C; Operating Temperature Min:-40°C; Package / Case:DIP; Supply Voltage:5V; Supply Voltage Max:6V; Supply Voltage Min:2V; Termination Type:Through Hole