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HD74HC4020 Datasheet

  • HD74HC4020

  • 14-stage Binary Counter

  • 9頁(yè)

  • HITACHI

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HD74HC4020
14-stage Binary Counter
Description
The HD74HC4020 is a 14 stage counter. This device is incremented on the falling edge (negative
transition) of the input clock, and all its output is reset to a low level by applying a logical high on its reset
input.
Features
鈥?/div>
High Speed Operation: t
pd
(Clock to Q
1
) = 14 ns typ (C
L
= 50 pF)
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High Output Current: Fanout of 10 LSTTL Loads
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Wide Operating Voltage: V
CC
= 2 to 6 V
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Low Input Current: 1 碌A(chǔ) max
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Low Quiescent Supply Current: I
CC
(static) = 4 碌A(chǔ) max (Ta = 25擄C)
Function Table
Clock
Reset
L
L
X
H
Outputs State
No change
Advance to next state
All output are low

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