HD74HC190 Hitachi Semiconductor, HD74HC190 Datasheet - Page 8

• Manufacturer Part Number: HD74HC190
• Description: Synchronous Up/Down Decade/4-bit Binary Counter(Single Clock Line)
• Manufacturer: Hitachi Semiconductor

HD74HC190/HD74HC191
AC Characteristics (C
Item
Maximum clock
frequency
Propagation delay t
time
Pulse width
Hold time
8
Symbol
f
t
t
t
max
PLH
PHL
w
h
L
= 50 pF, Input t
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
CC
(V) Min Typ Max Min
Ta = 25 C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
80
16
14
0
0
0
—
—
—
—
21
—
—
18
—
—
14
—
—
22
—
—
26
—
—
20
—
—
14
—
—
17
—
—
8
–
—
–6
—
r
5
25
29
265 —
53
45
230 —
46
39
120 —
24
20
190 —
38
32
250 —
50
43
230 —
46
39
130 —
26
22
190 —
38
32
—
—
—
—
—
—
= t
f
= 6 ns)
Ta = –40 to
+85 C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
100
20
17
0
0
0
Max
4
20
24
335
66
56
290
58
49
150
30
26
240
48
41
315
63
54
290
58
49
165
33
28
240
48
41
—
—
—
—
—
—
Unit
MHz
ns
ns
ns
Test Conditions
Load to Q
Data to Q
Clock to RC
Clock to Q
Clock to max/min
Down/up to RC
G to RC
Down/up to max/min