address o no.810, yishan road shanghai china tel o 86-021-64850700 fax o 86-64852222 zip.200233 bl 54573b tv band switches integrated circuit description BL54573B is a high frequency tuner?s band decoder nd driver. it decodes the hand switches signals from remoter and drives the tuner, so completing hand switch function. pin assignment features ?? direct used between remoter and tuner .the external circuit is simple. ?? uses 12v of inner voltage ?? open collector output ?? single 8 pins plastic package applications band switches for remote system application circuit bl54573 used in mitsubishi color tv remote system bl54573 12345 7 68 +12v bv gnd bs bu 120k 120k bl50436 band1 band2 to hf tuner .com .com .com .com 4 .com u datasheet
|
