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參數(shù)資料
| 型號： | 74LV138 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 3-to-8 line decoder/multiplexer; inverting |
| 中文描述： | 3至8線路解碼器/復用器;反相 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大小： | 116K |
| 代理商： | 74LV138 |
Philips Semiconductors
Product specification
74LV138
3-to-8 line decoder/demultiplexer; inverting
1998 Apr 28
6
AC CHARACTERISTICS
GND = 0V; t
r
= t
f
= 2.5ns; C
L
= 50pF; R
L
= 500
CONDITION
LIMITS
SYMBOL
PARAMETER
WAVEFORM
–40 to +85
°
C
TYP
1
–40 to +125
°
C
MIN
UNIT
V
CC
(V)
1.2
MIN
MAX
MAX
75
2.0
26
44
55
t
PHL
/t
PLH
Propagation delay
A
n
to Y
n
Figures 1, 3
2.7
19
31
39
ns
3.0 to 3.6
15
2
26
32
4.5 to 5.5
–
3
17
22
1.2
75
2.0
26
43
53
t
PHL
/t
PLH
Propagation delay
E
3
to Y
n
Figures 1, 3
2.7
19
30
38
ns
3.0 to 3.6
15
2
25
31
4.5 to 5.5
19
24
1.2
75
2.0
26
43
53
t
PHL
/t
PLH
Propagation delay
E
n
to Y
n
Figures 2, 3
2.7
19
30
38
ns
3.0 to 3.6
15
2
25
31
4.5 to 5.5
19
24
NOTES:
1. Unless otherwise stated, all typical values are measured at T
amb
= 25
°
C
2. Typical values are measured at V
CC
= 3.3 V.
3. Typical values are measured at V
CC
= 5.0 V.
AC WAVEFORMS
V
M
= 1.5 V at V
CC
≥
2.7 V and
≤
3.6 V;
V
M
= 0.5 V
×
V
CC
at V
CC
<
2.7 V and
≥
4.5 V;
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
SV00528
V
M
A
n
, E
3
INPUT
V
CC
GND
V
OL
V
OH
Y
n
OUTPUT
V
M
t
PLH
t
PHL
Figure 1.
Input (An) and enable input (E
3
) to output (Yn)
propagation delays.
SV00529
V
M
E
1
, E
2
INPUT
Y
n
OUTPUT
V
M
t
PLH
t
PHL
V
CC
GND
V
OL
V
OH
Figure 2.
Enable input (E
n
) to output (Yn) propagation delays.
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