參數(shù)資料
型號： SN74AS157DRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 編、解碼器及復用、解復用
英文描述： AS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封裝： GREEN, PLASTIC, SOIC-16
文件頁數(shù)： 17/20頁
文件大?。?/td> 722K
代理商： SN74AS157DRG4
SN54ALS157A, SN54ALS158
SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158
QUAD 1OF2 DATA SELECTORS/MULTIPLEXERS
SDAS081C APRIL 1982 REVISED DECEMBER 1994
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74AS157, SN74AS158
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
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
UNIT
VCC
Supply voltage
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
2
mA
IOL
Low-level output current
20
mA
TA
Operating free-air temperature
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS157
SN74AS158
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = 2 mA
VCC 2
V
VOL
VCC = 4.5 V,
IOL = 20 mA
0.35
0.5
V
II
A/B
VCC = 5.5 V,
VI = 7 V
0.2
mA
II
A, B, or G
VCC = 5.5 V,
VI = 7 V
0.1
mA
IIH
A/B
VCC = 5.5 V,
VI = 2.7 V
40
A
IIH
A, B, or G
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
A/B
VCC = 5.5 V,
VI = 0.4 V
1
mA
IIL
A, B, or G
VCC = 5.5 V,
VI = 0.4 V
0.5
mA
IO§
VCC = 5.5 V,
VO = 2.25 V
30
112
mA
ICC
SN74AS157
VCC = 5.5 V
17.5
28
mA
ICC
SN74AS158
VCC = 5.5 V
15.6
22.5
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.
相關(guān)PDF資料
PDF描述
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