74ALS253N 查看數據表（PDF） - Philips Electronics
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74ALS253N Datasheet PDF : 9 Pages
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Philips Semiconductors
Dual 4-input multiplexer (3-State)
Product specification
74ALS253
LOGIC DIAGRAM
OEa I0a
16
I1a I2a
5
4
I3a S1 S0 I0b I1b I2b I3b OEb
3 2 14 10 11 12 13 15
7
Ya
VCC = Pin 16
GND = Pin 8
9
Yb
SC00074
FUNCTION TABLE
INPUTS
S0 S1 I0 I1 I2
XXXXX
L
L
L
X
X
L
L
H
X
X
H
L
X
L
X
H
L
X
H
X
L
H
X
X
L
LHXXH
HHXXX
HHXXX
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
I3 OEn
XH
X
L
X
L
X
L
X
L
X
L
X
L
L
L
HL
OUTPUTS
Yn
Z
L
H
L
H
L
H
L
H
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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