參數(shù)資料
型號(hào): 74HC162
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: Presettable synchronous BCD decade counter; synchronous reset
中文描述: 可預(yù)置同步BCD碼十進(jìn)制計(jì)數(shù)器,同步復(fù)位
文件頁數(shù): 9/11頁
文件大?。?/td> 83K
代理商: 74HC162
December 1990
9
Philips Semiconductors
Product specification
Presettable synchronous BCD decade
counter; synchronous reset
74HC/HCT162
AC CHARACTERISTICS FOR HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
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 Q
n
propagation delay
CP to TC
propagation delay
CP to TC
propagation delay
CET to TC
propagation delay
CET to TC
output transition time
24
43
54
65
ns
4.5
Fig.8
t
PHL
30
51
64
77
ns
4.5
Fig.8
t
PLH
22
45
56
68
ns
4.5
Fig.8
t
PHL
18
35
44
53
ns
4.5
Fig.9
t
PLH
12
24
30
36
ns
4.5
Fig.9
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Figs 8 and 9
t
W
clock pulse width
HIGH or LOW
set-up time
D
n
to CP
set-up time
PE to CP
set-up time
CEP, CET to CP
set-up time
MR to CP
hold time
D
n
, PE, CEP,
CET, MR to CP
maximum clock
pulse frequency
16
7
20
24
ns
4.5
Fig.8
t
su
20
9
25
30
ns
4.5
Fig.9
t
su
35
16
44
53
ns
4.5
Fig.9
t
su
40
23
50
60
ns
4.5
Fig.12
t
su
20
12
25
30
ns
4.5
Fig.11
t
h
0
10
0
0
ns
4.5
Figs 9, 11 and 12
f
max
17
29
14
11
MHz
4.5
Fig.8
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