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Hitachi MB-6890 Service Manual page 27

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Table
5-3
EB IEIEIEI
EI III
I I I
I
IIIIII
IEIIEI
l1llIl
LL
l=
E
IIIIEI-B
L
Q~»
H
+I
H
D
0
5-25
HDHESSSVEQ
(Quadruple
2-input
Exclusive
(SV)
Vcc
4Y
38
48
4A
|4f
?v| Lo? is:
Lai
Ve;
|4i A5:
|
3
2
IA
I8
IY
2A
2B
S-25
Input
Output
Input
D D - Y
L
L
a
H
H
5-27
rising
+...
Previous
Q ..Q
o
input
if
Even
of
edge
as
H
+L
Gates)
OR
3A
3Y
s
|1
s
GND
ZY
Output
L
_
|
L
L
H~
H
H
L
H
L
"H"
X...
edge,
or
of
state
Q,
Qo...Q
maintainsprevious
changes,
output
D
rise.
does
not
clock
CK
does
not
change
Q
even
is
period.
H
OF
consiStS
5-26
4
I/O
table
-OR
gate
"L"
possible
Previous
state
condition
if
when
D
changes
of
2
input
pieces
5-27.
is
fig
as
per
of
Q
CK
exclusive

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