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參數(shù)資料
| 型號： | CD74HC138SM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LM5575 SIMPLE SWITCHER® 75V, 1.5A Step-Down Switching Regulator; Package: TSSOP EXP PAD; No of Pins: 16 |
| 中文描述： | 高速CMOS邏輯3至8線路解碼器/多路解復(fù)用器反相和非反相 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 43K |
| 代理商： | CD74HC138SM |
5
HCT TYPES
High Level Input
Voltage
V
IH
-
-
4.5 to
5.5
2
-
-
2
-
2
-
V
Low Level Input
Voltage
V
IL
-
-
4.5 to
5.5
-
-
0.8
-
0.8
-
0.8
V
High Level Output
Voltage
CMOS Loads
V
OH
V
IH
or V
IL
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
High Level Output
Voltage
TTL Loads
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
Low Level Output
Voltage
CMOS Loads
V
OL
V
IH
or V
IL
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
Low Level Output
Voltage
TTL Loads
4
4.5
-
-
0.26
-
0.33
-
0.4
V
Input Leakage
Current
I
I
V
CC
and
GND
0
5.5
-
±
0.1
-
±
1
-
±
1
μ
A
Quiescent Device
Current
I
CC
V
CC
or
GND
0
5.5
-
-
8
-
80
-
160
μ
A
Additional Quiescent
Device Current Per
Input Pin: 1 Unit Load
(Note 4)
I
CC
V
CC
-2.1
-
4.5 to
5.5
-
100
360
-
450
-
490
μ
A
NOTE:
4. For dual-supply systems theoretical worst case (V
I
= 2.4V, V
CC
= 5.5V) specification is 1.8mA.
DC Electrical Specifications
(Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO 85
o
C -55
o
C TO 125
o
C
UNITS
V
I
(V)
I
O
(mA)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HCT Input Loading Table
INPUT
UNIT LOADS
A0-A2
1.5
E1, E2
1.25
E3
1
NOTE: Unit Load is
I
CC
limit specified in DC Electrical Table, e.g.,
360
μ
A max at 25
o
C.
Switching Specifications
Input t
r
, t
f
= 6ns
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO
85
o
C
-55
o
C TO 125
o
C
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
Propagation Delay
t
PLH,
t
PHL
C
L
= 50pF
2
-
-
150
-
190
-
225
ns
Address to Output
4.5
-
-
30
-
38
-
45
ns
C
L
= 15pF
5
-
13
-
-
-
-
-
ns
C
L
= 50pF
6
-
-
26
-
33
-
38
ns
CD74HC138, CD74HCT138, CD74HC238, CD74HCT238
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