saa1300 NXP Semiconductors, saa1300 Datasheet - Page 2

• Manufacturer Part Number: saa1300
• Description: Tuner Switching Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Product specification
Tuner switching circuit
SAA1300
The SAA1300 is for switching on and off the supply lines
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of various circuit parts via an I
C bus signal. Furthermore,
it can be used to supply current for switching diodes in
radio and television tuners. It contains 5 output stages,
which are capable of supplying up to 85 mA in the ON state
or sinking up to 100 A in the OFF state.
Current limiting and short-circuit protection are included.
The output stages are driven by a shift register/latch
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combination which is loaded via data from the I
C bus. A
power-on reset of the latches ensures the OFF state of the
output stages (OUT 2 to OUT 5) without data reception
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from the I
C bus. A subaddressing system allows the
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connection of up to three circuits on the same I
C bus
lines; one of the outputs (OUT 1, pin 7) can also be used
as an input to select the device via a simple internal A/D
converter.
Fig.1 Block diagram.
PACKAGE OUTLINE
9-lead SIL; plastic (SOT142); SOT142-1; 1996 September 05.
June 1987
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