General description
The TDA18254AHN is a Silicon Tuner IC designed specifically for high definition multi-tuner cable Set Top Boxes (STB) supporting single streaming and multi-streaming PVR STBs with watch, record, Video-On-Demand (VOD) and in-home video distribution capability.

FEATUREs and benefits
 Supports 4 tuner functions specifically aimed for PVR boxes:
   1 × low IF output
   3 × RF outputs to drive slave tuners
 Integrated wideband gain control
 Extended frequency coverage up to 1002 MHz
 Integrated RF tracking filters for rejection of unwanted signals
 Single 3.3 V power supply
 Low power consumption
 Multistandard cable receptions
 Enhanced RF and IF filters to increase selectivity and adjacent channels filtering
 RF loop-through
 Fully integrated IF selectivity, eliminating the need for external SAW filters
 Alignment free
 Fully integrated oscillators:
   No external oscillator components for reduced cost
   16 MHz crystal oscillator output buffer for single crystal applications
 I2C-bus provides:
   3.3 V microcontroller compatibility
   Received Signal Strength Indicator (RSSI) data access
   Die temperature sensor data access
 Lead-free (Pb) manufacturing