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74ACTQ563 반도체 회로 부품 판매점

Quiet Series Octal Latch with 3-STATE Outputs



Fairchild Semiconductor 로고
Fairchild Semiconductor
74ACTQ563 데이터시트, 핀배열, 회로
January 1990
Revised December 1998
74ACTQ563
Quiet SeriesOctal Latch with 3-STATE Outputs
General Description
The ACTQ563 is a high speed octal latch with buffered
common Latch Enable (LE) and buffered common Output
Enable (OE) inputs. The ACTQ563 is functionally identical
to the ACTQ573, but with inverted outputs. The ACTQ563
utilizes Fairchild FACT Quiet Seriestechnology to guar-
antee quiet output switching and improved dynamic thresh-
old performance. FACT Quiet Series features GTO
output control and undershoot corrector in addition to a
split ground bus for superior performance.
Features
s ICC and IOZ reduced by 50%
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance
s Improved latch-up immunity
s Inputs and outputs on opposite sides of package allow
easy interface with microprocessors
s Outputs source/sink 24 mA
s Faster prop delays than standard ACT563
s Functionally identical to the ACTQ573 but with inverted
outputs
Ordering Code:
Order Number Package Number
Package Description
74ACTQ563PC
N20A
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.
Logic Symbols
Connection Diagram
Pin Assignment for DIP
IEEE/IEC
Pin Descriptions
Pin Names
D0–D7
LE
OE
O0–O7
Description
Data Inputs
Latch Enable Input
3-STATE Output Enable Input
3-STATE Latch Outputs
FACT, Quiet Series, FACT Quiet Seriesand GTOare trademarks of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation DS010631.prf
www.fairchildsemi.com


74ACTQ563 데이터시트, 핀배열, 회로
Functional Description
The ACTQ563 contains eight D-type latches with 3-STATE
complementary outputs. When the Latch Enable (LE) input
is HIGH, data on the Dn inputs enters the latches. In this
condition the latches are transparent, i.e., a latch output will
change state each time its D input changes. When LE is
LOW the latches store the information that was present on
Function Table
the D inputs a setup time preceding the HIGH-to-LOW tran-
sition of LE. The 3-STATE buffers are controlled by the
Output Enable (OE) input. When OE is LOW, the buffers
are in the bi-state mode. When OE is HIGH the buffers are
in the high impedance mode but that does not interfere with
entering new data into the latches.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
NC = No Change
Logic Diagram
Inputs
OE LE D
HXX
HH L
HHH
HLX
LHL
L HH
LLX
Internal
Q
X
H
L
NC
H
L
NC
Outputs
Function
O
Z High-Z
Z High-Z
Z High-Z
Z Latched
H Transparent
L Transparent
NC Latched
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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74ACTQ563

Quiet Series Octal Latch with 3-STATE Outputs - Fairchild Semiconductor



74ACTQ563PC

Quiet Series Octal Latch with 3-STATE Outputs - Fairchild Semiconductor