HD74HC4020 Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – 14-stage Binary Counter

HD74HC4020
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Maximum clock
frequency
Symbol
f _max
V_CC (V)
2.0
4.5
Min Typ Max Min
——5 —
— — 25 —
Max Unit Test Conditions
4
MHz
20
6.0
— — 29 — 24
Propagation delay t_PLH
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 Q_n to Q_{n – 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
t_w
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