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 I2C bus. Sufficient sub-addressing is
provided for the I2C 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
•I2C bus or non-I2C bus mode (controlled by d.c.
voltages)
•Slave receiver in the I2C 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 V15-4 10 to 13,2 V
Supply current (without load) I15
typ. 33 mA
max. 50 mA
Storage temperature Tstg max. +125 °C
Operating ambient temperature range Tamb 0 to +70 °C