BA7649 Rohm, BA7649 Datasheet - Page 2

• Manufacturer Part Number: BA7649
• Description: Video signal switcher
• Manufacturer: Rohm

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2
Multimedia ICs
Block diagram
Equivalent circuits
CTLA / B
CLAMP INPUT
CTLA / CTLB
Vcc
14
1
Vcc
13
2
D2
12
0.8 A
3
100
D2
R1
Logic
11
4
Q1
R2
R2
50k
10
100 A
5
IN
R3
100
Input clamp voltage 2.1V (V
Input bias current 1 A [Typ.]
Input impedance over 1M
R4
34k
9
6
Q2
Q3
D1
20k
8
7
CC
= 5V, Typ.)
CTLC
CTLC
OUTPUT
Vcc
Vcc
•
Truth table
Either "L (open)" or "H".
2mA
D2
L (OPEN)
L (OPEN)
CTLA
H
H
Q1
100
R1
D1
D2
R2
45k
R3
L (OPEN)
L (OPEN)
R4
CTLB
29k
H
H
Output impedance 20
Output DC voltage 0.55V (V
Q3
OUT
30k
BA7649A / BA7649AF
L (OPEN)
L (OPEN)
L (OPEN)
L (OPEN)
CTLC
H
[Typ.]
CC
= 5V, Typ.)
MUTE (IN5)
OUT
IN1
IN2
IN3
IN4