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參數(shù)資料
| 型號： | SN54ALS138AFK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS |
| 中文描述： | 3線至8線解碼器/解復(fù)用器 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 525K |
| 代理商： | SN54ALS138AFK |
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
Input voltage, V
I
Operating free-air temperature range, T
A
: SN54AS138
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74AS138
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
–55
°
C to 125
°
C
0
°
C to 70
°
C
–65
°
C to 150
°
C
recommended operating conditions
SN54AS138
MIN
NOM
SN74AS138
MIN
NOM
UNIT
MAX
MAX
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
High-level output current
–2
–2
mA
Low-level output current
20
20
mA
°
C
Operating free-air temperature
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS138
MIN
TYP
SN74AS138
MIN
TYP
UNIT
MAX
MAX
VIK
VOH
VOL
II
IIH
IIL
IO§
ICCH
ICCL
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V
VCC = 5.5 V
II = –18 mA
IOH = –2 mA
IOL = 20 mA
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
–1.2
–1.2
V
VCC –2
VCC –2
V
0.35
0.5
0.35
0.5
V
0.1
0.1
mA
μ
A
mA
20
20
–0.5
–0.5
–30
–112
–30
–112
mA
12
17.5
12
17.5
mA
14
20
14
20
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
§The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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