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54AC169D Fiches technique(PDF) 1 Page - National Semiconductor (TI) |
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54AC169D Fiches technique(HTML) 1 Page - National Semiconductor (TI) |
1 / 10 page 54AC169 • 54ACT169 4-Stage Synchronous Bidirectional Counter General Description The ’AC/’ACT169 is fully synchronous 4-stage up/down counter. The ’AC/’ACT169 is a modulo-16 binary counter. It features a preset capability for programmable operation, carry lookahead for easy cascading and a U/D input to con- trol the direction of counting. All state changes, whether in counting or parallel loading, are initiated by the LOW-to-HIGH transition of the Clock. Features n ICC reduced by 50% n Synchronous counting and loading n Built-In lookahead carry capability n Presettable for programmable operation n Outputs source/sink 24 mA n ’ACT has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) 5962-91603 Logic Symbols Pin Names Description CEP Count Enable Parallel Input CET Count Enable Trickle Input CP Clock Pulse Input P 0–P3 Parallel Data Inputs PE Parallel Enable Input U/D Up-Down Count Control Input Q 0–Q3 Flip-Flop Outputs TC Terminal Count Output FACT™ is a trademark of Fairchild Semiconductor Corporation. DS100276-1 IEEE/IEC DS100276-2 July 1998 © 1998 National Semiconductor Corporation DS100276 www.national.com |
Numéro de pièce similaire - 54AC169D |
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Description similaire - 54AC169D |
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