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54ACT377DMQB Datasheet(PDF) 2 Page - Texas Instruments |
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54ACT377DMQB Datasheet(HTML) 2 Page - Texas Instruments |
2 / 10 page 54AC377 • 54ACT377 Octal D Flip-Flop with Clock Enable General Description The ’AC/’ACT377 has eight edge-triggered, D-type flip-flops with individual D inputs and Q outputs. The common buff- ered Clock (CP) input loads all flip-flops simultaneously, when the Clock Enable (CE) is LOW. The register is fully edge-triggered. The state of each D in- put, one setup time before the LOW-to-HIGH clock transi- tion, is transferred to the corresponding flip-flop’s Q output. The CE input must be stable only one setup time prior to the LOW-to-HIGH clock transition for predictable operation. Features n ICC reduced by 50% n Ideal for addressable register applications n Clock enable for address and data synchronization applications n Eight edge-triggered D flip-flops n Buffered common clock n Outputs source/sink 24 mA n See ’273 for master reset version n See ’373 for transparent latch version n See ’374 for TRI-STATE® version n ’ACT377 has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) — ’AC377: 5962-88702 — ’ACT377: 5962-87697 Logic Symbols Pin Names Description D 0–D7 Data Inputs CE Clock Enable (Active LOW) Q 0–Q7 Data Outputs CP Clock Pulse Input TRI-STATE® is a registered trademark of National Semiconductor Corporation. FACT® is a registered trademark of Fairchild Semiconductor Corporation. DS100290-1 IEEE/IEC DS100290-2 February 1999 © 1999 National Semiconductor Corporation DS100290 www.national.com |
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