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Regarding the change of names mentioned in the document, such as Hitachi
Electric and Hitachi XX, to Renesas Technology Corp.
The semiconductor operations of Mitsubishi Electric and Hitachi were transferred to Renesas
Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog
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these changes do not constitute any alteration to the contents of the document itself.
Renesas Technology Home Page: http://www.renesas.com
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
Cautions
Keep safety first in your circuit designs!
1. Renesas Technology Corporation puts the maximum effort into making semiconductor products better
and more reliable, but there is always the possibility that trouble may occur with them. Trouble with
semiconductors may lead to personal injury, fire or property damage.
Remember to give due consideration to safety when making your circuit designs, with appropriate
measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or
(iii) prevention against any malfunction or mishap.
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contained therein.
HD74HC563/HD74HC573
Octal Transparent Latches (with 3-state outputs)
ADE-205-509 (Z)
1st. Edition
Sep. 2000
Description
When the latch enable (LE) input is high, the Q outputs of HD74HC563 will follow the inversion of the D
inputs and the Q outputs of HD74HC573 will follow the D inputs. When the latch enable goes low, data at
the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is
applied to the output control input, all outputs go to a high impedance state, regardless of what signals are
present at the other inputs and the state of the storage elements.
Features
•
High Speed Operation: t
pd
(Data to Q,
Q)
= 11 ns typ (C
L
= 50 pF)
•
High Output Current: Fanout of 15 LSTTL Loads
•
Wide Operating Voltage: V
CC
= 2 to 6 V
•
Low Input Current: 1
µA
max
•
Low Quiescent Supply Current: I
CC
(static) = 4
µA
max (Ta = 25°C)
Function Table
Outputs
Output Control
L
L
L
H
Q
0
:
Q
0
:
Latch Enable
H
H
L
X
Data
H
L
X
X
HD74HC563
L
H
Q
0
Z
HD74HD573
H
L
Q
0
Z
level of Q before the indicated Steady-sate input conditions were established.
complement of Q
0
or level of
Q
before the indicated Steady-state input conditions were established.
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