Download Print this page

Hitachi MB-6890 Service Manual page 32

Hide thumbs Also See for MB-6890:

Advertisement

HD74lLSl51FF
(Quadruple
2-Line
Selectors/MultiplexerS(Nonlnverted
Outputs))
Input
Cup
(SV)
,__ pl.1
$ h & |
VGC
4A
48
B
l5
I4
I3
_-lm
B
QA
48
5
m
m
q
I
2
3
4
seeee
IA
as
_:Y
Input
83%
5-34
.5-I0
\
Input
Strobe
I
Select
I
H
X
I
I
L
L
I
L
L
IH
_
L
H
I
I
L
H
gp
X
Z ' H
Acceptable
H014 ESISBEE
(Quadruple
2-Line
to
Selectors/Multiplexers(
Outputs))
Innmollh
Imam;
,_f'-LPI-If
,-Z-.
csv:
4Y
Wx
swam
4A
48
IBEEE IIIIEIB
I
.
4Y
¢;
4A
43
5
IA
IB
nv
2A
.
I---i
H
2
5
4
»
Select
IA
IB
IY
ZA
Input
Input
03%
gas
5-ll
Input
Select
I
'Strobe
A
I
H
x
x
I
L
I
I
L
L
I
I
I
L
L
H
JL
I
I
I
H
x
I
I
I
I
L
H
x
Acceptable
X;.H-
to
l-Line
Data
Input
Output
_
__
4Y
3A
35
3Y
B
nz
||
9
4
34
53
'Iv
u
n
Q
5
6
r
a
za
23
2?
GNO
Input
output
Ioutpu
-I
A
I
B
y
X
X
L
I
I
I
L
X
L
X
H
X
L
L
X
H
H
"H"
and
"L"
l-Line
Data
lnver
t ed
output
36
3*
3A
338
A
av
-
ze
zv
.
_
6
T
0
26
2Y
GND
Output
IOutp k
I
B
Y
I
x
H
I
H
x
I
X
L
I
L
H
I
I
H
L
both
H
and
L
5-34
is
data
selector/multiplexer
select
data
from
one
package.
Strobe
one
for
4
outputs.
When
all
the
becomes"LI
output
is
"L",
input
data
one
transmit
to
4
outputs
4
state
select
input
The
selected
input
at
the
output
same
This
is
the
data
selector/multiplexer
to
select
data
one
in
pairs
one
package.
select
is
the
com on
strobe
input
is
"H"
If
"L",
input
data
one
transmitted
to
4
output
state
of
select
input
selected
this
In
case,
transmitted
to
the
phase.
which
having
4
two,
pairs
and
select
is
common
strobe
input
is
"H"
if
strobe
input
is
selected
then
depending
the
on
from
2
input
signals.
is
data
transmit
to
phase.
from
having
4
two,
The
strobe
and
for
4
If
output.
all
the
is
output
is
selected
and
depending
the
on
from
2
input
signal
input
data
is
output
with
reverse
i
the
"H"

Advertisement

loading