HD74HC390 Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – Dual Decade Counters

HD74HC390
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 —
— — 27 —
Max Unit Test Conditions
4
MHz
21
6.0
— — 32 — 25
Propagation delay t_PLH
time
t _PHL
2.0
— — 120 — 150 ns Clock A to Q_A
4.5
— 11 24 — 30
6.0
— — 20 — 26
t _PLH
2.0
— — 290 — 365 ns Clock A to Q_C
t _PHL
4.5
— 32 58 — 73
(Q_A connected to Clock B)
6.0
— — 49 — 62
t _PLH
2.0
— — 130 — 165 ns Clock B to Q_B
t _PHL
4.5
— 16 26 — 33
6.0
— — 22 — 28
t _PLH
2.0
— — 185 — 230 ns Clock B to Q_C
t _PHL
4.5
— 20 37 — 46
6.0
— — 31 — 39
t _PLH
2.0
— — 130 — 165 ns Clock B to Q_D
t _PHL
4.5
— 15 26 — 33
6.0
— — 22 — 28
t _PHL
2.0
— — 165 — 205 ns Clear to Q_A, Q_B, Q_C, Q_D
4.5
— 14 33 — 41
6.0
— — 28 — 35
Pulse width
t_w
2.0
80 — — 100 — ns
4.5
16 8 — 20 —
6.0
14 — — 17 —
Removal time
t_h
2.0
25 — — 31 — ns
4.5
5 1 —6
—
6.0
4 —— 5
—
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