54AC191 - Up/Down Counter

Name: 54AC191
SKU: 54AC191-571856

National Semiconductor

The 54AC191 by National Semiconductor is a Up/Down Counter. Below is the official datasheet preview.

Datasheet Details

Part number	54AC191
Manufacturer	National Semiconductor
File Size	229.28 KB
Description	Up/Down Counter
Datasheet	54AC191_NationalSemiconductor.pdf
Additional preview pages of the 54AC191 datasheet.

The ’AC191 is a reversible modulo 16 binary counter.

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. Features n n n n n n n ICC reduced by 50% High speed.
133 MHz typical count frequency Synchronous counting Asynchronous parallel loa.

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Published: Feb 15, 2007 |