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54AC191 Datasheet - National Semiconductor

54AC191_NationalSemiconductor.pdf

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Datasheet Details

Part number:

54AC191

Manufacturer:

National Semiconductor

File Size:

229.28 KB

Description:

Up/down counter.

54AC191, Up/Down Counter

54AC191 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, sta

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