參數(shù)資料
型號: SN74ALS251NE4
廠商: TEXAS INSTRUMENTS INC
元件分類: 編、解碼器及復用、解復用
英文描述: ALS SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 11/17頁
文件大?。?/td> 693K
代理商: SN74ALS251NE4
SN54ALS251, SN74ALS251
1OF8 DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS215A APRIL 1982 REVISED DECEMBER 1994
3
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54ALS251
55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS251
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
SN54ALS251
SN74ALS251
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
0.7
0.8
V
IOH
High-level output current
1
2.6
mA
IOL
Low-level output current
12
24
mA
TA
Operating free-air temperature
55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS251
SN74ALS251
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.5
V
VCC = 4.5 V to 5.5 V,
IOH = 0.4 mA
VCC 2
VOH
VCC = 4.5 V
IOH = 1 mA
2.4
3.3
V
VOH
VCC = 4.5 V
IOH = 2.6 mA
2.4
3.2
V
VOL
VCC = 4.5 V
IOL = 12 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
20
A
IOZL
VCC = 5.5 V,
VO = 0.4 V
20
A
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 = 4.5 V
20
112
30
112
mA
ICC
Enabled
VCC = 5.5 V
Inputs at GND
7
10
7
10
mA
ICC
Disabled
VCC = 5.5 V
Inputs at 4.5 V
9.4
14
9.4
14
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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相關(guān)代理商/技術(shù)參數(shù)
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