器件名称: 54ACT
功能描述: 9-Bit D Flip-Flop
文件大小: 153.63KB 共8页
简 介:54ACT 74ACT823 9-Bit D Flip-Flop
March 1993
54ACT 74ACT823 9-Bit D Flip-Flop
General Description
The ’ACT823 is a 9-bit buffered register It features Clock Enable and Clear which are ideal for parity bus interfacing in high performance microprogramming systems The ’ACT823 offers noninverting outputs and is fully compatible with AMD’s Am29823
Features
Y Y Y Y
Outputs source sink 24 mA TRI-STATE outputs for bus interfacing Inputs and outputs are on opposite sides ’ACT823 has TTL-compatible inputs
Logic Symbols
IEEE IEC
Connection Diagrams
Pin Assignment for DIP Flatpak and SOIC
TL F 9894–1
TL F 9894 – 2
TL F 9894 – 3
Pin Assignment for LCC
Pin Names D0 – D8 O0 – O8 OE CLR CP EN
Description Data Inputs Data Outputs Output Enable Clear Clock Input Clock Enable
TL F 9894 – 4
FACTTM is a trademark of National Semiconductor Corporation TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9894 RRD-B30M75 Printed in U S A
Functional Description
The ’ACT823 consists of nine D-type edge-triggered flipflops These have TRI-STATE outputs for bus systems organized with inputs and outputs on opposite sides The buffered clock (CP) and buffered Output Enable (OE) are common to all flip-flops The flip-flops will store the state of their individual D inputs that meet the setup and hold time requirements on the LOW-to-HIGH CP transition With OE LOW the contents of the flip-flops are available at the outputs When OE……
