May 1991
Revised December 1998
7
4
A
C
TQ823 Quiet

Ser
i
es

9-
Bit

D-
T
ype Fli
p
-
F
lop wit
h

3-
ST
A
T
E Output
s
© 1999 Fairchild Semiconductor Corporation DS010921.prf www.fairchildsemi.com
74ACTQ823
Quiet Series 9-Bit D-Type Flip-Flop
with 3-STATE Outputs
General Description
The ACTQ823 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
ACTQ823 utilizes Fairchild Quiet Series technology to
guarantee quiet output switching and improved dynamic
threshold performance. FACT Quiet Series features
GTO output control and undershoot corrector in addition
to a split ground bus for superior performance.
Features
a73 Guaranteed simultaneous switching noise level and
dynamic threshold performance
a73 Guaranteed pin-to-pin skew AC performance
a73 Inputs and outputs on opposite sides of package allow
easy interface with microprocessors
a73 Improved latch-up immunity
a73 Has TTL-compatible inputs

Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering form.
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Assignment
for DIP and SOIC
Pin Descriptions
FACT, Quiet Series, FACT Quiet Series and GTO are trademarks of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74ACTQ823SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
74ACTQ823SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300” Wide
Pin Names Description
D
0
–D
8
Data Inputs
O
0
–O
8
Data Outputs
OE Output Enable
CLR Clear
CP Clock Input
EN Clock Enable