KS-FX483R,KS-FX480R,KS-FX43R
(No.49812)1-17
4.2 HD74HC126FP-X (IC751) : Buffer
•Pin layout •Pin function
Note:
H:High level
L:Low level
X:Irrelevant
Z:Off(High-impedance)
State a 3-state input
• Block diagram
Note:
CL includes probe and jig capacitance
4.3 UPC1228HA (IC901) : Head amp
• Pin layout & Block diagram
1
2
3
4
5
6
7
1C
1A
1Y
2C
2A
2Y
GND
VCC
4C
4A
4Y
3C
3A
3Y
14
13
12
11
10
9
8
Input Output
CA Y
LX Z
HL H
HH L
Vcc Vcc
Input
See Function Table
1A
2A
3A
4A
1C
2C
3C
4C
1Y
2Y
3Y
4Y
Output
Output
Output
Output
Sample as Load Circuit 1
Sample as Load Circuit 1
Sample as Load Circuit 1
1k
1k
S1
CL
ANP1
ANP2
UPC1228HA
1
2
3
4
5
6
7
8
IN1
NFB1
OUT1
VCC
GND
OUT2
NFB2
IN2
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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