HD74HC4020 查看數據表（PDF） - Hitachi -> Renesas Electronics
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HD74HC4020 Datasheet PDF : 9 Pages
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HD74HC4020
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Maximum clock
frequency
Symbol
f max
VCC (V)
2.0
4.5
Min Typ Max Min
——5 —
— — 25 —
Max Unit Test Conditions
4
MHz
20
6.0
— — 29 — 24
Propagation delay tPLH
time
t PHL
2.0
— — 175 — 220 ns Clock to Q1
4.5
— 14 35 — 44
6.0
— — 30 — 37
t PLH
2.0
— — 175 — 220 ns Clock to Q1
t PHL
4.5
— 14 35 — 44
6.0
— — 30 — 37
t PLH
2.0
— — 200 — 250 ns Reset to output
t PHL
4.5
— 18 40 — 50
6.0
— — 34 — 43
t PLH
2.0
— — 100 — 125 ns Qn to Qn – 1
t PHL
4.5
— — 20 — 25
6.0
— — 17 — 21
Removal time
t rem
2.0
100 — — 125 — ns
4.5
20 6 — 25 —
6.0
17 — — 21 —
Pulse width
tw
2.0
80 — — 100 — ns
4.5
16 4 — 20 —
6.0
14 — — 17 —
Output rise/fall
t TLH
time
t THL
2.0
— — 75 — 95 ns
4.5
— 5 15 — 19
6.0
— — 13 — 16
Input capacitance Cin
—
— 5 10 — 10 pF
5
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