BA7645N Datasheet, PDF (1/4 Pages) Rohm – Video signal switcher

Multimedia ICs
Video signal switcher
BA7645N
The BA7645N is a four-channel analog multiplexer with mute, designed for use in video cassette recorders. It fea-
tures a large dynamic range, and wide operating frequency range, and has sync-tip inputs which are ideal for switch-
ing video signals.
•^Applications
Video cassette recorders and televisions
•^Features
1) 4-input / 1-output switches.
2) Built-in mute.
3) Sync-tip inputs.
4) Wide operating supply voltage range
(4.5V to 13.0V).
5) Low power consumption (48mW Typ.).
6) Excellent frequency characteristics
(10MHz, 0dB Typ.).
7) Wide dynamic range (3.5VP-P Typ.).
8) Low interchannel crosstalk
( – 65dB Typ., f = 4.43MHz).
•^{Absolute maximum ratings (Ta = 25°C)}
Parameter
Symbol
Limit
Unit
Power supply voltage
VCC
Power dissipation
Pd
13.5
V
850^∗
mW
Operating temperature
Topr
– 25 ~ + 75
°C
Storage temperature
Tstg
– 55 ~ + 125
°C
∗ Reduced by 8.5mW for each increase in Ta of 1°C over 25°C.
•^{Block diagram}
MUTE
LOGIC
1 2 3 4 5 6 7 8 9 10
•^{Truth table}
CTLA
CTLB
L (OPEN) L (OPEN)
L (OPEN)
H
H
L (OPEN)
H
H
∗
∗
∗ Either "L (open)" or "H".
CTLC
L (OPEN)
L (OPEN)
L (OPEN)
L (OPEN)
H
OUT
IN1
IN2
IN3
IN4
MUTE
1