HD74HC190 Datasheet, PDF (8/13 Pages) Hitachi Semiconductor – Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line)

HD74HC190/HD74HC191
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
— — 265 — 335 ns Load to Q
4.5
— 21 53 — 66
6.0
— — 45 — 56
2.0
— — 230 — 290
Data to Q
4.5
— 18 46 — 58
6.0
— — 39 — 49
2.0
— — 120 — 150
Clock to RC
4.5
— 14 24 — 30
6.0
— — 20 — 26
2.0
— — 190 — 240
Clock to Q
4.5
— 22 38 — 48
6.0
— — 32 — 41
2.0
— — 250 — 315
Clock to max/min
4.5
— 26 50 — 63
6.0
— — 43 — 54
2.0
— — 230 — 290
Down/up to RC
4.5
— 20 46 — 58
6.0
— — 39 — 49
2.0
— — 130 — 165
G to RC
4.5
— 14 26 — 33
6.0
— — 22 — 28
2.0
— — 190 — 240
Down/up to max/min
4.5
— 17 38 — 48
6.0
— — 32 — 41
Pulse width
t_w
2.0
80 — — 100 — ns
4.5
16 8 — 20 —
6.0
14 – — 17 —
Hold time
t_h
2.0
0 —— 0
— ns
4.5
0 –6 — 0
—
6.0
0 —— 0
—
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