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Fairchild Semiconductor - Quiet Seriesa 9-Bit Transparent Latch with 3-STATE Outputs

Numéro de référence 74ACTQ843SPC
Description Quiet Seriesa 9-Bit Transparent Latch with 3-STATE Outputs
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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74ACTQ843SPC fiche technique
March 1990
Revised December 1998
74ACTQ843
Quiet Series9-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 Seriestechnol-
ogy to guarantee quiet output switching and improved
dynamic threshold performance. FACT Quiet Series fea-
tures GTOoutput 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:
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
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
Pin Names
D0–D8
O0–O8
OE
LE
CLR
PRE
Description
Data Inputs
Data Outputs
Output Enable
Latch Enable
Clear
Preset
FACT, Quiet Series, FACT Quiet Seriesand GTOare trademarks of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation DS010689.prf
www.fairchildsemi.com

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