CD74HCT191E Datasheet PDF - TI

●description/ordering information

●The CD54/74HC190 are asynchronously presettable BCD decade counters, whereas the CD54/74HC191 and CD54/74HCT191 are asynchronously presettable binary counters.

●• 2-V to 6-V VCC Operation (’HC190, 191)

●• 4.5-V to 5.5-V VCC Operation (’HCT191)

●• Wide Operating Temperature Range of −55°C to 125°C

●• Synchronous Counting and Asynchronous Loading

●• Two Outputs for n-Bit Cascading

●• Look-Ahead Carry for High-Speed Counting

●• Balanced Propagation Delays and Transition Times

●• Standard Outputs Drive Up To 15 LS-TTL Loads

●• Significant Power Reduction Compared to LS-TTL Logic ICs