JVC RX-DV31SL Service Manual page 43

6.21 MM1613DN-X (IC682) : Regulator
• Pin layout
5
(TOP VIEW)
1
• Pin function
Pin No. Symbol
1 Cont
2 GND
3 Cn
4 Vout
5 Vin
6.22 MM74HC08SJ-X (IC612) : Quad. 2-input AND gates
• Pin layout & Block diagram
A1 1
B1 2
Y1 3
A2 4
B2 5
Y2 6
GND 7
6.23 MM74HCT32MTC-X (IC521) : OR gate
• Pin layout & Block diagram
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
(TOP VIEW)
4
2 3
ON/OFF Control pin
Cont Vo
H ON
L OFF
Cont pin must be connected with VIN pin, if it is not used.
Ground
Noise decrease pin, Connecting 0.01uF capacitor can decrease output noise.
If the noise decrease capacitor is not connected, the pin may be influenced by outside noise.
Output pin, The capacitor must be connected with output pin more than 1uF.
Input pin
The capacitor is required to connect with input pin more than 1uF.
14 Vcc
13 B4
12 A4
11 Y4
10 B3
9 A3
8 Y3
14 V
CC
13 4B
12 4A
11 4Y
10 3B
9 3A
8 3Y
• Block diagram
Vin
5
Bias
Cont
1
Reference
Thermal
shutdown
GND
2
3
Cn
Function
• Truth table
INPUTS OUTPUT
A B Y
L L L
L H H
H L H
H H H
Vout
4
Current
Driver
limiter
(No.22023)1-43