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Hitachi MB-6890 Service Manual page 31

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(Dual
4-Line
to
Selectors/Multiplexers)
I
Slrcbc
Select
(SV)
2G
A
2CJ
VCC
'Id
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as
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I
I
ll!!
.
-
B
I
1
4
IG
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IC:
IC:
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om
33
-5-
'IT'1I>Ig_
Input
Select
" " 2 = " " §
' T =
X
X
X
L
L
L
_
_
L
L
I
H
L
H
L
L
H
H
H
L
I..
I
I
H
L
HI
p
I
H
H
L
I
H
H
H
pp
X :'H"
Acceptable
eae
we
Truth
1/o
D
,Q
Input
Salocf
Dqrq
I
I
aAcoIcIIc2
I
I
X
x
x
x
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I
L
L
x
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x
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.
.,
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"
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,"
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Acceptable
both
H
and
In
ut
I
G
A
a
I
H
x
x
I
I
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'-
I
L
L
H
I-
I
H
L
I
I
L
n
H
Co
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Cx
cz-_-_.ee
d
Cx
,
when
A
=
B
connect
='L',
'I
='L'-
When
B
='H}
connect
When
A='H'.B='L,
connect
when
"=B='H}
d
connect
All manuals and user guides at all-guides.com
I-Line
Data
Input
can
Cgyjgput
2Cx
2C|
2Co
I2
II
|o
9
;"|
..|
5
s
1
a
»
ICI
lCo
IY
GND
\
Input
Output
:5-8
I
Output
'
Strobe
Y
W
S
H
L
H
L
ng
ng
I
I
L
I
'
L
D,
D,
I
L
I
D,
D,
L
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L
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I
L
D,
D,
L
D,
D.
I
I
I
I
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L
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a n d " * L "
both
"H"
Table
(HD74Ls153P>
Out
I
I
gym"
,
I
cs\
cs
Y
I
xx
x
H
I
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x
x
L
L
I
I
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_.
,
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X
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I
I
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L
x
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Dx I
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L
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A
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I
x
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L
I
"
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OR
I
output
I
I
Y
I
L
I
Value
of
I
I
Value
of
Value
of
I
Value
of
OR
by
other
expression
Sw'
I,
_
'
'
Swz
~L
Yi
L
means
_,_
a
5
I1
b
SW2
G='L',
connect
C
P
_H_
*=
SW2
connect
5-33
consists
plexers.
Multiplexer
function
out
necessary
5-9).
(Table
I
Co
Cf
C2
3
to
X
to
Y
JDO
UI'
2
pair
Multi-
of
is
device
which
the
switch
rotary
as
which_take_s
D-L-..
.--»-.U
outpuii
ll-UNI
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has
similar
a n - I
»
MD
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