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SN74F157A датащи(PDF) 2 Page - Texas Instruments

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номер детали SN74F157A
подробное описание детали  QUAADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
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SN74F157A датащи(HTML) 2 Page - Texas Instruments

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SN54F157A, SN74F157A
QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS
SDFS053A − MARCH 1987 − REVISED OCTOBER 1993
2−2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
logic symbol
logic diagram (positive logic)
G
MUX
2
1A
1
3
1B
EN
15
G1
1
1Y
4
5
2A
6
2B
2Y
7
11
3A
10
3B
3Y
9
14
4A
13
4B
4Y
12
A /B
4Y
3Y
2Y
1Y
12
9
7
4
A /B
G
4B
4A
3B
3A
2B
2A
1B
1A
1
15
13
14
10
11
6
5
3
2
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
1
Pin numbers shown are for the D, J, and N packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
−0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range (see Note 1)
−1.2 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input current range
−30 mA to 5 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state
−0.5 V to VCC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state
40 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: SN54F157A
−55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74F157A
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.
NOTE 1: The input voltage rating may be exceeded provided that the input current rating is observed.
recommended operating conditions
SN54F157A
SN74F157A
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
2
V
VIL
Low-level input voltage
0.8
0.8
V
IIK
Input clamp current
−18
−18
mA
IOH
High-level output current
−1
−1
mA
IOL
Low-level output current
20
20
mA
TA
Operating free-air temperature
−55
125
0
70
°C


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