參數(shù)資料
型號(hào): 74HC237
廠商: NXP Semiconductors N.V.
英文描述: 3-to-8 line decoder/demultiplexer with address latches
中文描述: 3至8線路解碼器/解復(fù)用器的地址鎖存器
文件頁數(shù): 6/9頁
文件大?。?/td> 68K
代理商: 74HC237
December 1990
6
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer with
address latches
74HC/HCT237
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
A
n
to Y
n
52
19
15
61
22
18
47
17
14
47
17
14
19
7
6
11
4
3
6
2
2
3
1
1
160
32
27
190
38
32
145
29
25
145
29
25
75
15
13
200
40
34
240
48
41
180
36
31
180
36
31
95
19
16
240
48
41
285
57
48
220
44
38
220
44
38
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
Fig.6
t
PHL
/ t
PLH
propagation delay
LE to Y
n
ns
Fig.7
t
PHL
/ t
PLH
propagation delay
E
1
to Y
n
ns
Fig.7
t
PHL
/ t
PLH
propagation delay
E
2
to Y
n
ns
Fig.6
t
THL
/ t
TLH
output transition time
ns
Fig.6
t
W
LE pulse width
LOW
50
10
9
50
10
9
30
6
5
65
13
11
65
13
11
40
8
7
75
15
13
75
15
13
45
9
8
ns
Fig.8
t
su
set-up time
A
n
to LE
ns
Fig.8
t
h
hold time
A
n
to LE
ns
Fig.8
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