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
1 2 3 4 5 6 7 8
+12V
BV
GND
TO HF Tuner
BS
BU
120K
120K
BL50436
BAND1
BAND2
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