4-Bit Up/Down Counter

The 54AC191 is a reversible modulo 16 binary Counter It features synchronous counting and asynchronous presetting. The preset feature allows the 'AC191 to be used in programmable dividers. The Count Enable input, the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multistage Counters In the counting modes, state changes are initiated by the rising edge of the Clock
By National Semiconductor Corporation
54AC191 's Packages54AC191 's pdf datasheet



54AC191 Pinout, Pinouts
54AC191 pinout,Pin out
This is one package pinout of 54AC191,If you need more pinouts please download 54AC191's pdf datasheet.

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