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74ACTQ843SC Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 74ACTQ843SC
Description  Quiet Seriesa™ 9-Bit Transparent Latch with 3-STATE Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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 1 page
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March 1990
Revised December 1998
© 1999 Fairchild Semiconductor Corporation
DS010689.prf
www.fairchildsemi.com
74ACTQ843
Quiet Series
™ 9-Bit Transparent Latch
with 3-STATE Outputs
General Description
The ACTQ843 bus interface latch is designed to eliminate
the extra packages required to buffer existing latches and
provide extra data width for wider address/data paths. The
ACTQ843 utilizes Fairchild FACT Quiet Series
™ technol-
ogy to guarantee quiet output switching and improved
dynamic threshold performance. FACT Quiet Series fea-
tures GTO
™ output control and undershoot corrector in
addition to a split ground bus for superior performance.
Features
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance
s Inputs and outputs on opposite sides of package for
easy interface with microprocessors
s Improved latch-up immunity
s Outputs source/sink 24 mA
s ACTQ843 has TTL-compatible inputs
s Functionally and pin-compatible to AMD’s AM29843
s 3-STATE outputs for bus interfacing
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbols
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
74ACTQ843SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
74ACTQ843SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300” Wide
Pin Names
Description
D0–D8
Data Inputs
O0–O8
Data Outputs
OE
Output Enable
LE
Latch Enable
CLR
Clear
PRE
Preset




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