Part 74F191
Description Up/Down Binary Counter
Manufacturer National Semiconductor
Size 211.10 KB
National Semiconductor
74F191

Overview

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.