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SN54ALS563A Datasheet(PDF) 1 Page - Texas Instruments

Part No. SN54ALS563A
Description  OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN54ALS563A Datasheet(HTML) 1 Page - Texas Instruments

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FUNCTION TABLE
(each latch)
OUTPUT
Q
OC
CD
H
H
L
X
H
H
X
X
L
L
L
H
L
H
Z
Q0
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OC
1D
2D
3D
4D
5D
6D
7D
8D
GND
VCC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
C
SN54ALS563A . . . J PACKAGE
SN74ALS563B . . . DW OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
2Q
3Q
4Q
5Q
6Q
3D
4D
5D
6D
7D
SN54ALS563A . . . FK PACKAGE
(TOP VIEW)
INPUTS
ENABLE
SN54ALS563A, SN74ALS563B
OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS
SDAS163 – D2661, DECEMBER 1982 – REVISED JANUARY 1989
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
© 1989, Texas Instruments Incorporated
1
3-State Buffer-Type Outputs Drive Bus-Lines
Directly
Bus Structured Pinout
Package Options include Plastic Small Outline
Package, Ceramic Chip Carriers and Standard
Plastic and Ceramic DIPs
Dependable Texas Instruments Quality and
Reliability
description
These 8-bit latches feature three-state outputs
designed specifically for driving highly capacitive
or relatively low-impedance loads. They are
particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The eight latches are transparent D-type latches.
While the enable (C) is high the Q outputs will
follow the complements of data (D) inputs. When
the enable is taken low the output will be latched
at the inverses of the levels that were set up at the
D inputs.
A buffered output-control input can be used to
place the eight outputs in either a normal logic
state
(high
or
low
logic
levels)
or
a
high-impedance state. In the high-impedance
state the outputs neither load nor drive the bus
lines significantly. The high-impedance state and
increased high-logic level provide the capability to
drive the bus lines in a bus-organized system
without need for interface or pull-up components.
The output control (OC) does not affect the
internal operation of the latches. Old data can be
retained or new data can be entered while the
outputs are in the high-impedance state.
The SN54ALS563A is characterized for operation
over the full military temperature range of – 55
°C
to 125
°C. The SN74ALS563B is characterized for
operation from 0
°C to 70°C.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.


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