Table of Contents
Philips Semiconductors
Switch for CTV receivers
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
2
via a bidirectional I
C bus. Sufficient sub-addressing is
2
provided for the I
C bus mode. It can also be controlled
directly by d.c. switching signals.
QUICK REFERENCE DATA
Supply voltage range
Supply current (without load)
Storage temperature
Operating ambient temperature range
PACKAGE OUTLINE
18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19.
November 1985
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
2
2
I
C bus or non-I
C bus mode (controlled by d.c.
voltages)
Slave receiver in the I
External OFF command
System expansion possible up to 7 devices (14 sources)
Static short-circuit proof outputs
V
I
15
T
T
2
Product specification
TDA8440
2
C bus mode
10 to 13,2 V
15-4
typ.
max.
max.
125
stg
0 to
amb
33 mA
50 mA
C
70
C
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