Up/Down Binary Counter with Preset and Ripple Clock
General Description
The 'F191 is a reversible modulo-16 binary counter featuring
synchronous counting and asynchronous presetting.
The preset feature allows the 'F191 to be used in programmable
dividers. The Count Enable input, the Terminal Count
output and 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
Y High-SpeedÐ125 MHz typical count frequency
Y Synchronous counting
Y Asynchronous parallel load
Y Cascadable
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