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Компоненты Описание
74HC/HCT192 Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
74HC/HCT192
Presettable synchronous BCD decade up/down counter
Philips Electronics
74HC/HCT192 Datasheet PDF : 13 Pages
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Philips Semiconductors
Presettable synchronous BCD decade
up/down counter
Product specification
74HC/HCT192
T
amb
(
°
C)
TEST CONDITIONS
SYMBOL
PARAMETER
min.
+
25
typ. max.
74HC
−
40 to
+
85
−
40 to
+
125
min. max. min. max.
UNIT
V
CC
(V)
WAVEFORMS
t
W
up clock pulse width
120 39
HIGH or LOW
24 14
20 11
150
180
30
36
26
31
ns 2.0 Fig.7
4.5
6.0
t
W
down clock pulse width 140 50
HIGH or LOW
28 18
24 14
175
210
35
42
30
36
ns 2.0 Fig.7
4.5
6.0
t
W
master reset pulse width 80 22
HIGH
16 8
14 6
100
120
20
24
17
20
ns 2.0 Fig.10
4.5
6.0
t
W
parallel load pulse width 80 22
LOW
16 8
14 6
100
120
20
24
17
20
ns 2.0 Fig.9
4.5
6.0
t
rem
removal time
PL to CP
U
, CP
D
50 3
10 1
91
65
75
13
15
11
13
ns 2.0 Fig.9
4.5
6.0
t
rem
removal time
MR to CP
U
, CP
D
50 0
10 0
90
65
75
13
15
11
13
ns 2.0 Fig.10
4.5
6.0
t
su
set-up time
D
n
to PL
80 22
16 8
14 6
100
120
20
24
17
20
ns 2.0 Fig.11 note:
4.5 CP
U
= CP
D
=
6.0 HIGH
t
h
hold time
D
n
to PL
0
−
14
0
0
0
−
5
0
0
0
−
4
0
0
ns 2.0 Fig.11
4.5
6.0
t
h
hold time
CP
U
to CP
D
,
CP
D
to CP
U
80 19
16 7
14 6
f
max
maximum up, down clock 4.0 12
pulse frequency
20 36
24 43
100
120
20
24
17
20
3.2
2.6
16
13
19
15
ns 2.0 Fig.13
4.5
6.0
MHz 2.0 Fig.7
4.5
6.0
December 1990
8
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