參數(shù)資料
型號: 74HC160
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; asynchronous reset
中文描述: 可預置同步BCD碼十進制計數(shù)器;異步復位
文件頁數(shù): 9/9頁
文件大?。?/td> 63K
代理商: 74HC160
December 1990
9
Philips Semiconductors
Product specification
Presettable synchronous BCD decade
counter; asynchronous reset
74HC/HCT160
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
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
MR to Q
n
propagation delay
MR to TC
propagation delay
CET to TC
propagation delay
CET to TC
output transition time
25
43
54
65
ns
4.5
Fig. 8
t
PHL
28
48
60
72
ns
4.5
Fig. 8
t
PLH
23
39
49
59
ns
4.5
Fig. 8
t
PHL
27
50
63
75
ns
4.5
Fig. 9
t
PHL
30
50
63
75
ns
4.5
Fig. 9
t
PHL
17
35
44
53
ns
4.5
Fig. 10
t
PLH
9
17
21
26
ns
4.5
Fig. 10
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Figs 8 and 10
t
W
clock pulse width
HIGH or LOW
master reset pulse width
LOW
removal time
MR to CP
set-up time
D
n
to CP
set-up time
PE to CP
set-up time
CEP, CET to CP
hold time
D
n
to CP
hold time
PE to CP
hold time
CEP, CET to CP
maximum clock pulse
frequency
16
8
20
24
ns
4.5
Fig. 8
t
W
20
11
25
30
ns
4.5
Fig. 9
t
rem
20
9
25
30
ns
4.5
Fig. 9
t
su
18
10
25
30
ns
4.5
Fig. 11
t
su
30
18
44
53
ns
4.5
Fig. 11
t
su
50
30
63
75
ns
4.5
Fig. 12
t
h
0
8
0
0
ns
4.5
Figs 11 and 12
t
h
0
13
0
0
ns
4.5
Figs 11 and 12
t
h
0
21
0
0
ns
4.5
Figs 11 and 12
f
max
16
28
13
11
MHz
4.5
Fig. 8
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