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HD74HC4022 Datasheet

  • HD74HC4022

  • Octal Counters/Dividers

  • 8頁

  • HITACHI

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HD74HC4022
Octal Counters/Dividers
Description
The HD74HC4022 is a four-stage Johson octal counter with built-in code converter. High speed operation
and spike-free outputs are obtained by use of a Johson octal counter design. The eight decoded outputs are
normally low, and go high only at their appropriate octal time period. The output changes occur on the
positive-going edge of the clock pulse. This part can be used in frequency division application as well as
octal counter or octal decode display applications.
Features
鈥?/div>
High Speed Operation
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 碌A(chǔ) max
Low Quiescent Supply Current: I
CC
(static) = 4 碌A(chǔ) max (Ta = 25擄C)
Function Table
Clock
L
X
Clock Enable
X
H
L
X
H
X
X
X: Irrelevant
n < 4 路路路 Carry = H
n
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4 路路路 Carry = L
X
Reset
L
L
L
L
L
L
H
Output n
n
n
n+1
n
n+1
n
Q
0

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