Sony CDU31A Series Service Manual page 92

SN74ALS139NS
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1Y
SN74ALS641 A-1 NS
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••
...
SN74HCOOANS
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2Y1 OUT
2Y2Cl.IT
14 13 12 1l 10 9 8
Vee
(+OV)
0
1 2 J
GND
INPUTS
OUTPUTS
EN
0
0
0
0
1
B
0
0
1
1
x
A Y3 Y2 Y1 YO
0
1
1 1 0
1 1 1 0 1
0 1 0
, ,
1 0
,
1
1
x
1
1 1 1
0 LOW LEVEL
1 HIGH LEVEL
X DON'T CAllE
EN OIR OPERATION
0 0 Bto A
o 1 Atos
X HI· Z
O; LOW LEVEL
1 ;
HIGH LEVEL
X:
OON'T CARE •
H1-z; HIGH l"'PEOANCE
Dositive Logic: Y=
AB
7-15
SN74HC14ANS (TEXAS INSTRUMENTS)
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6 A 6 Y 5 A S Y 4 A 4 Y
SN74LS244NS
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TC7S08F (TOSHIBA)
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SN74HC 14ANS
0; LOW LEVEL
1 ;HIGH LEVEL
O:LOW LEVEL
1; HIGH LEVEL
X; OON'T CARE
Hl•Z;HIGH IMPEDANCE