July 1989
Revised November 1999
74ACQ374 • 74ACTQ374
Quiet Series Octal D-Type Flip-Flop
with 3-STATE Outputs
General Description
Features
■ ICC and IOZ reduced by 50%
The ACQ/ACTQ374 is a high-speed, low-power octal D-
type flip-flop featuring separate D-type inputs for each flip-
flop and 3-STATE outputs for bus-oriented applications. A
buffered Clock (CP) and Output Enable (OE) are common
to all flip-flops.
■ Guaranteed simultaneous switching noise level and
dynamic threshold performance
■ Guaranteed pin-to-pin skew AC performance
■ Improved latch-up immunity
The ACQ/ACTQ374 utilizes FACT Quiet Series technol-
ogy to guarantee quiet output switching and improve
dynamic threshold performance. FACT Quiet Series fea-
tures GTO output control and undershoot corrector in
addition to a split ground bus for superior performance.
■ Buffered positive edge-triggered clock
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ Outputs source/sink 24 mA
■ Faster prop delays than the standard AC/ACT374
Ordering Code:
Order Number Package Number
Package Description
74ACQ374SC
74ACQ374SJ
M20B
M20D
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACQ374PC
74ACTQ374SC
74ACTQ374SJ
74ACTQ374QSC
74ACTQ374PC
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
M20B
M20D
MQA20
N20A
20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150” Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
D0–D7
CP
Description
Data Inputs
Clock Pulse Input
OE
3-STATE Output Enable Input
3-STATE Outputs
O0–O7
FACT , Quiet Series , FACT Quiet Series , and GTO are trademarks of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation
DS010238
www.fairchildsemi.com