March 1990
Revised November 1998
7
4
A
C
TQ821 Quiet

Ser
i
es

10-
Bit

D-
T
ype Fl
ip-
F
lop wit
h

3-
ST
A
T
E Output
s
© 1999 Fairchild Semiconductor Corporation DS010686.prf www.fairchildsemi.com
74ACTQ821
Quiet Series 10-Bit D-Type Flip-Flop
with 3-STATE Outputs
General Description
The ACTQ821 is a 10-bit D-type flip-flop with non-inverting
3-STATE outputs arranged in a broadside pinout. The
ACTQ821 utilizes Fairchild’s 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 Non-inverting 3-STATE outputs for bus interfacing
a73 4 kV minimum ESD immunity
a73 Outputs source/sink 24 mA
a73 Functionally identical to the AM29821

Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
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
74ACTQ821SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
74ACTQ821SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300” Wide
Pin Names Description
D
0
–D
9
Data Inputs
O
0
–O
9
Data Outputs
OE Output Enable Input
CP Clock Input