參數(shù)資料
型號： SN54ALS27AJ
廠商： TEXAS INSTRUMENTS INC
元件分類： 門電路
英文描述： ALS SERIES, TRIPLE 3-INPUT NOR GATE, CDIP14
封裝： 0.300 INCH, CERAMIC, DIP-14
文件頁數(shù)： 10/17頁
文件大?。?/td> 692K
代理商： SN54ALS27AJ
SN54ALS27A, SN54AS27, SN74ALS27A, SN74AS27
TRIPLE 3INPUT POSITIVENOR GATES
SDAS112B APRIL 1982 REVISED DECEMBER 1994
2
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: SN54ALS27A
55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS27A
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
SN54ALS27A
SN74ALS27A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VIL
Low-level input voltage
0.7§
V
IOH
High-level output current
0.4
mA
IOL
Low-level output current
4
8
mA
TA
Operating free-air temperature
55
125
0
70
°C
Applies over temperature range 55°C to 70°C
§ Applies over temperature range 70°C to 125°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS27A
SN74ALS27A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.5
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = 0.4 mA
VCC 2
V
VOL
VCC = 4.5 V
IOL = 4 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 8 mA
0.35
0.5
V
II
VCC = 5.5 V,
VI = 7 V
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
VCC = 5.5 V,
VI = 0.4 V
0.1
mA
IO#
VCC = 5.5 V,
VO = 2.25 V
20
112
30
112
mA
ICCH
VCC = 5.5 V,
VI = 0
0.97
1.8
0.97
1.8
mA
ICCL
VCC = 5.5 V,
VI = 4.5 V
2
4
2
4
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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