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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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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.
HD74HC592
8-bit Register/Binary Counter
ADE-205-513 (Z)
1st. Edition
Sep. 2000
Description
The HD74HC592 consists of a parallel input, 8-bit storage register feeding an 8-bit binary counter. Both
the register and the counter have individual positive edge-triggered clocks. In addition, the counter has
direct load and clear functions. Expansion is easily accomplished by connecting
RCO
of the first stage to
the count enable of the second stage, etc.
Features
•
High Speed Operation: t
pd
(CCK to
RCO)
= 24 ns typ (C
L
= 50 pF)
•
High Output Current: Fanout of 10 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
Inputs
RCK
X
X
CLoad
L
H
H
H
X
X
X
H
H
H
CCLR
H
L
H
H
H
H
H
CCKEN
X
X
X
X
L
L
H
X
CCK
X
X
X
X
Function
Regiater data loaded into counter
Counter clear
Input data A to H stored into register
No change in register
Count up
No count
No cont
RCO
= QA’•QB’•QC’•QD’•QE’•QF’•QG’•QH’• (CCKEN) (QA’ to QH’: Output of Internal Counter)
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