Description
CHS PSS
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
SFS PLLFLT TVOVCC TVOUT GND VCCA VIDEO PSave/LO
LOP XTAL
GND PREEM AUDIO SPLFLT
SOIC16 pin package
Figure 1. Pin Connections
Table 1. Package Pin Descriptions
Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name CHS PSS LOP XTAL GND PREEMP AUDIOIN SPLFLT PSAVE/LO VIDEOIN VCC GND RFOUT RFOVCC PLLFLT SFS Description Channel select (Low = channel 4, High = channel 3) Picture-to-Sound ratio select (Low = 14 dB, High = 16 dB) Logical outpu
Features
- Two RF output power levels offered:.
 
- MC44BC375U has typical RFOUT power of 76 dBµV.
 
- MC44BC375UA has typical RFOUT power of 80 dBµV U. S. broadcast frequency for Channel 3 or 4 operation is selected by CHS pin Programmable VHF oscillator and sound subcarrier oscillator. No external varicaps, diodes/inductors, or tuned components required. Programmable Picture/Sound Carrier Ratio (14 dB or 16 dB) is selected by PSS pin Programmable Sound Subcarrier Oscillator (4.5 or 5.5.