參數(shù)資料
型號: HD74HC173
廠商: Hitachi,Ltd.
英文描述: Octal Buffers/Drivers With 3-State Outputs 20-CFP -55 to 125
中文描述: 4位D型寄存器(3態(tài)輸出)
文件頁數(shù): 5/9頁
文件大小: 56K
代理商: HD74HC173
HD74HC173
5
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Item
Symbol
V
CC
(V)
2.0
Min Typ Max Min
Max
Unit
Test Conditions
Maximum clock
f
max
5
4
MHz
frequency
4.5
27
21
6.0
32
25
Propagation delay t
PLH
time
2.0
175 —
220
ns
Clock to Q
t
PHL
4.5
14
35
44
6.0
30
37
t
PHL
2.0
150 —
190
ns
Clear to Q
4.5
14
30
38
6.0
26
33
Enable time
t
ZH
t
ZL
2.0
150 —
190
ns
4.5
12
30
38
6.0
26
33
Disable time
t
HZ
t
LZ
2.0
150 —
190
ns
4.5
12
30
38
6.0
26
33
Setup time
t
su
2.0
100 —
125
ns
4.5
20
4
25
6.0
17
21
Removal time
t
rem
2.0
90
115
ns
4.5
18
0
23
6.0
15
20
Hold time
t
h
2.0
5
5
ns
4.5
5
–2
5
6.0
5
5
Pulse width
t
w
2.0
80
100
ns
4.5
16
4
20
6.0
14
17
Output rise/fall
t
TLH
t
THL
2.0
60
75
ns
time
4.5
4
12
15
6.0
10
13
Input capacitance
Cin
5
10
10
pF
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