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74HC191 데이터시트(PDF) 9 Page - NXP Semiconductors

부품명 74HC191
상세설명  Presettable synchronous 4-bit binary up/down counter
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제조업체  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC191 데이터시트(HTML) 9 Page - NXP Semiconductors

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December 1990
9
Philips Semiconductors
Product specification
Presettable synchronous 4-bit binary
up/down counter
74HC/HCT191
trem
removal time
PL to CP
35
7
6
8
3
2
45
9
8
55
11
9
ns
2.0
4.5
6.0
Fig.15
tsu
set-up time
U/D to CP
205
41
35
50
18
14
255
51
43
310
62
53
ns
2.0
4.5
6.0
Fig.17
tsu
set-up time
Dn to PL
100
20
17
19
7
6
125
25
21
150
30
26
ns
2.0
4.5
6.0
Fig.16
tsu
set-up time
CE to CP
140
28
24
44
16
13
175
35
30
210
42
36
ns
2.0
4.5
6.0
Fig.17
th
hold time
U/D to CP
0
0
0
−39
−14
−11
0
0
0
0
0
0
ns
2.0
4.5
6.0
Fig.17
th
hold time
Dn to PL
0
0
0
−11
−4
−3
0
0
0
0
0
0
ns
2.0
4.5
6.0
Fig.16
th
hold time
CE to CP
0
0
0
−28
−10
−8
0
0
0
0
0
0
ns
2.0
4.5
6.0
Fig.17
fmax
maximum clock pulse
frequency
4.0
20
24
11
33
39
3.2
16
19
2.6
13
15
MHz
2.0
4.5
6.0
Fig.10
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
−40 to +85
−40 to +125
min.
typ.
max.
min.
max. min.
max.


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