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SN74HC191NE4 数据表(PDF) 8 Page - Texas Instruments

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部件名 SN74HC191NE4
功能描述  4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
Download  17 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74HC191NE4 数据表(HTML) 8 Page - Texas Instruments

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SN54HC191, SN74HC191
4BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
SCLS121D − DECEMBER 1982 − REVISED OCTOBER 2003
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HC191
SN74HC191
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
4.2
8
2.8
3.3
fmax
4.5 V
21
42
14
17
MHz
fmax
6 V
24
48
16
19
MHz
2 V
130
264
396
330
LOAD
Any Q
4.5 V
40
53
79
66
LOAD
Any Q
6 V
33
45
67
56
QA, QB, QC,
2 V
135
240
360
300
A, B, C, or D
QA, QB, QC,
or QD
4.5 V
36
48
72
60
A, B, C, or D
or QD
6 V
30
41
61
51
2 V
58
120
180
150
RCO
4.5 V
17
24
36
30
RCO
6 V
14
21
31
26
2 V
107
192
288
240
CLK
Any Q
4.5 V
31
38
58
48
tpd
CLK
Any Q
6 V
26
32
49
41
ns
tpd
2 V
123
252
378
315
ns
MAX/MIN
4.5 V
39
50
76
63
MAX/MIN
6 V
32
43
65
54
2 V
102
228
342
285
RCO
4.5 V
29
46
68
57
D/U
RCO
6 V
24
38
59
49
D/U
2 V
86
192
288
240
MAX/MIN
4.5 V
24
38
58
48
MAX/MIN
6 V
20
32
49
41
2 V
50
132
198
165
CTEN
RCO
4.5 V
15
26
40
33
CTEN
RCO
6 V
13
23
34
28
2 V
38
75
110
95
tt
Any
4.5 V
8
15
22
19
ns
tt
Any
6 V
6
13
19
16
ns
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
50
pF


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