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54AC163F Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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54AC163F Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 12 page ![]() 54AC163 • 54ACT163 Synchronous Presettable Binary Counter General Description The ’AC/’ACT163 are high-speed synchronous modulo-16 binary counters. They are synchronously presettable for ap- plication in programmable dividers and have two types of Count Enable inputs plus a Terminal Count output for versa- tility in forming synchronous multistage counters. The ’AC/ ’ACT163 has a Synchronous Reset input that overrides counting and parallel loading and allows the outputs to be si- multaneously reset on the rising edge of the clock. Features n ICC reduced by 50% n Synchronous counting and loading n High-speed synchronous expansion n Typical count rate of 125 MHz n Outputs source/sink 24 mA n ’ACT163 has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) — ’AC163: 5962-89582 — ’ACT163: 5962-91723 Logic Symbols Pin Names Description CEP Count Enable Parallel Input CET Count Enable Trickle Input CP Clock Pulse Input SR Synchronous Reset Input P 0–P3 Parallel Data Inputs PE Parallel Enable Input Q 0–Q3 Flip-Flop Outputs TC Terminal Count Output FACT™ is a trademark of Fairchild Semiconductor Corporation. DS100275-1 IEEE/IEC DS100275-2 November 1998 © 1998 National Semiconductor Corporation DS100275 www.national.com |
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