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參數(shù)資料
| 型號： | SN54ALS158J |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS |
| 中文描述： | 翻兩番1 - 2數(shù)據(jù)選擇器/多路復用器 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 556K |
| 代理商： | SN54ALS158J |
SN54ALS157A, SN54ALS158
SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158
QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C – APRIL 1982 – REVISED DECEMBER 1994
6
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
: SN74AS157, SN74AS158
Storage temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
°
C to 70
°
C
–65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . .
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.
recommended operating conditions
SN74AS157
SN74AS158
UNIT
MIN
NOM
MAX
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
4.5
5
5.5
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
High-level output current
–2
mA
Low-level output current
20
mA
°
C
Operating free-air temperature
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS157
SN74AS158
TYP
UNIT
MIN
MAX
VIK
VOH
VOL
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V,
II = –18 mA
IOH = –2 mA
IOL = 20 mA
–1.2
V
VCC –2
V
0.35
0.5
V
II
A/B
VCC= 5 5 V
VCC = 5.5 V,
VI= 7 V
VI = 7 V
0.2
mA
A, B, or G
0.1
IIH
A/B
VCC= 5 5 V
VCC = 5.5 V,
VI= 2 7 V
VI = 2.7 V
40
μ
A
A, B, or G
20
IIL
A/B
VCC= 5 5 V
VCC = 5.5 V,
VI= 0 4 V
VI = 0.4 V
–1
mA
A, B, or G
–0.5
IO§
VCC = 5.5 V,
VO = 2.25 V
–30
–112
mA
ICC
SN74AS157
SN74AS158
VCC= 5 5 V
VCC = 5.5 V
17.5
15.6
28
mA
22.5
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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