Casio TE-3000S - Page 67

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■ BACK LIGHT BLOCK(E468-E2 PCB)
22. LT1617ES5-1#TR (IC1)
■ CLERK SWITCH PCB (E466-E6 PCB)
23. BA12003BF-E2 (IC4, 5)
54
123
VIN SHDN
SW GND NFB
–
+
–
+
5
400ns
ONE-SHOT
DRIVER
RESET
ENABLE
42mV
0.12
A2
A1
Q3
2
R4
280k
R3
60k
R6
80k
R5
80k
Q2
X10
Q1
3
VIN
NFB
4
SHDN
1
SW
GND
L1
C2
V
OUT
V
IN
D1
R2
(EXTERNAL)
R1
(EXTERNAL)
V
OUT
C1
L2
C3
24. SN74LV374APWR (IC1 ~ 3)
1
2
3
4
5
6
7
8
IN1
IN2
IN3
IN4
IN5
IN6
IN7
GND
16
15
14
13
12
11
10
9
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
COM
1Q
1D
1D
C1
CLK
OE
1
2
11
3
120
219
318
417
516
615
714
8
1Q
1D
2Q
2D
3Q
3D
4Q 13
Vcc
FUNCTION TABLE
8Q
8D
7D
7Q
6D
6Q
5D
912
10
4D
GND 11
5Q
OE
CLK
OE
INPUTS
OUTPUT
Q
H
L
Q
0
Z
CLK D
L
L
L
H
H
L
X
X
앖
앖
L
X