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54AC191

Part Number	54AC191
Manufacturer	National Semiconductor
Description	Up/Down Counter
Published	Feb 15, 2007
Detailed Description	www.DataSheet4U.com 54AC191 Up/Down Counter with Preset and Ripple Clock July 1998 54AC191 Up/Down Counter with Prese...
Datasheet	54AC191 PDF File

Overview

www.
DataSheet4U.
com 54AC191 Up/Down Counter with Preset and Ripple Clock July 1998 54AC191 Up/Down Counter with Preset and Ripple Clock General Description The ’AC191 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.
Features n n n n n n n ICC reduced by 50% High speed — 133 MHz typical count frequency Synchronous counting Asynchron...

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