Octal D-Type Flip-Flop
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54AC574 • 54ACT574 Octal D-Type Flip-Flop with TRI-STATE Outputs
September 1998
54AC574 • 54ACT57...
Description
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54AC574 54ACT574 Octal D-Type Flip-Flop with TRI-STATE Outputs
September 1998
54AC574 54ACT574 Octal D-Type Flip-Flop with TRI-STATE ® Outputs
General Description
The ’AC/’ACT574 is a high-speed, low power octal flip-flop with a buffered common Clock (CP) and a buffered common Output Enable (OE). The information presented to the D inputs is stored in the flip-flops on the LOW-to-HIGH Clock (CP) transition. The ’AC/’ACT574 is functionally identical to the ’AC/’ACT374 except for the pinouts.
Features
n ICC and IOZ reduced by 50% n Inputs and outputs on opposite sides of package allowing easy interface with microprocessors n Useful as input or output port for microprocessors n Functionally identical to ’AC/’ACT374 n TRI-STATE outputs for bus-oriented applications n Outputs source/sink 24 mA n ’ACT574 has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) — ’ACT574: 5962-89601
Logic Symbols
IEEE/IEC
DS100256-1
DS100256-4
Pin Names D0–D7 CP OE O0–O7 Data Inputs
Description Clock Pulse Input TRI-STATE Output Enable Input TRI-STATE Outputs
TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT™ is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100256
www.national.com
Connection Diagrams
Pin Assignment for DIP, and Flatpak Pin Assignment for LCC
DS100256-2
DS100256-3
Functional Description
The ’AC/’ACT574 consists of eight edge-triggered flip-flops with indivi...
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