54ACT823

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 www.DataSheet4U.com 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...