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參數(shù)資料
| 型號(hào)： | HD74HC237 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 3-to-8-line Decoder/Demultiplexer with Address Latch |
| 中文描述： | 3至8線解碼器/解復(fù)用器的地址鎖存器 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 57K |
| 代理商： | HD74HC237 |
HD74HC237
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
Propagation delay t
PLH
time
—
—
185 —
230
ns
Data to Y
t
PHL
4.5
—
19
37
—
46
6.0
—
—
31
—
39
2.0
—
—
145 —
180
ns
G
2
to Y
4.5
—
14
29
—
36
6.0
—
—
25
—
31
2.0
—
—
145 —
180
ns
G
1
to Y
4.5
—
14
29
—
36
6.0
—
—
25
—
31
2.0
—
—
190 —
240
ns
GL
to Y
4.5
—
21
38
—
48
6.0
—
—
32
—
41
Pulse width
t
w
2.0
80
—
—
100
—
ns
4.5
16
8
—
20
—
6.0
14
—
—
17
—
Hold time
t
h
2.0
5
—
—
5
—
ns
4.5
5
–4
—
5
—
6.0
5
—
—
5
—
Setup time
t
su
2.0
75
—
—
95
—
ns
4.5
15
4
—
19
—
6.0
13
—
—
16
—
Output rise/fall
t
TLH
t
THL
2.0
—
—
75
—
95
ns
time
4.5
—
5
15
—
19
6.0
—
—
13
—
16
Input capacitance
Cin
—
—
5
10
—
10
pF
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|---|---|
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