November 1985
2
Philips Semiconductors
Product specification
Switch for CTV receivers
TDA8440
GENERAL DESCRIPTION
The TDA8440 is a versatile video/audio switch, intended to
be used in CTV receivers equipped with an AUXILIARY
VIDEO/AUDIO plug.
It provides two 3-state switches for audio channels and
one 3-state switch for the video channel and a video
amplifier with selectable gain (times 1 or times 2).
The integrated circuit can be used in conjunction with a
microcontroller from the MAB8400 family, and is controlled
via a bidirectional I
2
C bus. Sufficient sub-addressing is
provided for the I
2
C bus mode. It can also be controlled
directly by d.c. switching signals.
Features
•
Combined analogue and digital circuitry gives maximum
flexibility in channel switching
•
3-state switches for all channels
•
Selectable gain for the video channels
•
Sub-addressing facility
•
I
2
C bus or non-I
2
C bus mode (controlled by d.c.
voltages)
•
Slave receiver in the I
2
C bus mode
•
External OFF command
•
System expansion possible up to 7 devices (14 sources)
•
Static short-circuit proof outputs
QUICK REFERENCE DATA
PACKAGE OUTLINE
18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19.
Supply voltage range
V
15-4
10 to 13,2 V
Supply current (without load)
I
15
typ.
33 mA
max.
50 mA
Storage temperature
T
stg
max.
+
125
°
C
Operating ambient temperature range
T
amb
0 to
+
70
°
C
