Description

The U6239B is a single-chip frequency synthesizer with bidirectional I2C bus control and unidirectional 3-wire

bus control, developed for SAT TV-tuner and cable tuner applications.

Features

2.9 GHz divide-by-16 prescaler integrated

UNi-BUS:

  I2C bus and 3-wire bus

  I2C bus software compatible to U6223B

  3-wire bus software compatible to LC7215 (Sanyo)

I2C bus mode:

  4 bidirectional ports (open collector)

  2 unidirectional ports (open collector)

  5 level ADC or unidirectional port (open collector)

  Address mode select function (AMS, Pin 3):

  3 or 4 addresses selectable via Pin 10

3-wire bus mode:

  4 unidirectional ports (open collector)

  Lock output (open collector)

Programmable reference divider

Low power consumption (typ. 5 V / 23 mA)

Electrostatic protection according to MIL-STD 883