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54ACT161 数据表(PDF) 1 Page - National Semiconductor (TI) |
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54ACT161 数据表(HTML) 1 Page - National Semiconductor (TI) |
1 / 12 page 54AC161 • 54ACT161 Synchronous Presettable Binary Counter General Description The ’AC/’ACT161 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/ ’ACT161 has an asynchronous Master Reset input that over- rides all other inputs and forces the outputs LOW. 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 ’ACT161 has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) — ’AC161: 5962-89561 — ’ACT161: 5962-91722 Logic Symbols Pin Names Description CEP Count Enable Parallel Input CET Count Enable Trickle Input CP Clock Pulse Input MR Asynchronous Master Reset Input P 0–P3 Parallel Data Inputs PE Parallel Enable Inputs Q 0–Q3 Flip-Flop Outputs TC Terminal Count Output TRI-STATE® is a registered trademark of National Semiconductor Corporation. FACT™ is a trademark of Fairchild Semiconductor Corporation. DS100274-1 IEEE/IEC DS100274-2 November 1998 © 1998 National Semiconductor Corporation DS100274 www.national.com |
类似零件编号 - 54ACT161 |
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类似说明 - 54ACT161 |
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