74ALS251 データシートの表示（PDF） - Philips Electronics
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74ALS251 Datasheet PDF : 8 Pages
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Philips Semiconductors
8-input multiplexer (3-State)
Product specification
74ALS251
LOGIC DIAGRAM
I0
I1 I2
I3 I4
I5
I6
I7
4
3
2
1
15 14 13 12
S2 9
S1 10
11
S0
OE 7
VCC = Pin 16
GND = Pin 8
5
6
Y
Y
SC00069
FUNCTION TABLE
INPUTS
S2
S1
S0
OE
X
X
X
H
L
L
L
L
L
L
H
L
L
H
L
L
L
H
H
L
H
L
L
L
H
L
H
L
H
H
L
L
H
H
H
L
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
OUTPUTS
Y
Y
Z
Z
I0
I0
I1
I1
I2
I2
I3
I3
I4
I4
I5
I5
I6
I6
I7
I7
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL
PARAMETER
VCC
VIN
IIN
VOUT
IOUT
Tamb
Tstg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature range
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to VCC
48
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
VIH
VIL
IIK
IOH
IOL
Tamb
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature range
LIMITS
MIN NOM MAX
4.5
5.0
5.5
2.0
0.8
–18
–2.6
24
0
+70
UNIT
V
V
V
mA
mA
mA
°C
1991 Feb 08
3
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