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TX-7430
f1
PB553AC
(Prescaler)
Pin Connection
Block Diagram
PSC
(HK
IN
NJM4558!4559!4560 (Op
.
amplifier)
Vcc
J.
Pin
J
(Vcc)
2
.
Pin
2
(IN)
3
.
Pin 3 (CHK)
4
. Pin 4 (GND
)
5
.
Pin
5
(OUT)
6.
Pin
6 (PSC)
7
.
Pin
7,8
T
iming
Chart
........
+5 volts
Su
pp ly
.....
... FM Jocal
oscillat o r
sigual inpu
t
........
Chec k termin
al
........ Gro
und
terminal
........
Presca
ler
terminal
.......
.
Prescaler co ntrol
ter
minal
........
No
t
con
nec
ted
IM
CHK
PSC
X
((NADLE
OUI
PUl
St)
+-
- - -..1
L
j
-+
-+
f----
-
-17
pvl
u s
-
-
- -
+-
- - 1 6
PJh~s--
~
BA6124!LB1403 (Sign
al
meter
driver)
4066B!LC4966 (Analog switch)
SW 0
SW
C
CONT
A
'
IN/ OUT
'
b UT/ I N
CaN
T
0
OUTI
I
N
I NI OUT
12
10
B
1
5
I
Nl a UT
OUTIIN
Ca NT
B
Vss
CaNT/
IN! ,
I
N/
OUT!
CONTC
'-------~
SW A
SW
B
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