參數(shù)資料
型號(hào): 74HC40102
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: 8-bit synchronous BCD down counter
中文描述: 8位同步BCD碼遞減計(jì)數(shù)器
文件頁數(shù): 6/11頁
文件大?。?/td> 85K
代理商: 74HC40102
December 1990
6
Philips Semiconductors
Product specification
8-bit synchronous BCD down counter
74HC/HCT40102
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
I
CC
category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min. typ.
max. min. max.
min.
max.
t
PHL
/ t
PLH
propagation delay
CP to TC
96
35
28
50
18
14
110
40
32
83
30
24
9
7
6
22
8
6
30
11
9
39
14
11
8
3
2
36
13
10
50
18
14
300
60
51
200
40
34
240
68
58
275
55
47
75
15
13
375
75
64
250
50
43
425
85
72
345
69
59
95
19
16
450
90
77
300
60
51
510
102
87
415
83
71
110
22
19
ns
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
Fig.8
t
PHL
/ t
PLH
propagation delay
TE to TC
ns
Fig.8
t
PHL
/ t
PLH
propagation delay
P
n
, PL to TC
ns
Fig.8
t
PLH
propagation delay
MR to TC
ns
Fig.8
t
THL
/ t
TLH
output transition time
ns
Figs 8 and 8
t
W
clock pulse width
HIGH or LOW
165
33
28
150
30
26
125
25
21
50
10
9
100
20
17
175
35
30
205
41
35
190
38
33
155
31
26
65
13
11
125
25
21
220
44
37
250
50
43
225
45
38
190
38
32
75
15
13
150
30
26
265
53
45
ns
Fig.8
t
W
master reset pulse width
LOW
ns
Fig.8
t
W
preset enable pulse width
PL; LOW
ns
Fig.8
t
rem
removal time
PL; MR to CP
ns
Fig.8
t
su
set-up time
PE to CP
ns
Fig.8
t
su
set-up time
TE to CP
ns
Fig.8
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