sc2272-m4

hello

i want datasheet for the following decoder and incoder chip in english

SC2272-M4 and SC2260-R4

thanks

Instead of this I have PT2272-M4 & I have attached it here. I have a confusion about the momentary output of PT2271-M4. What would be the actual condition I dont know. Will it give pulsating output when any data key in Tx is pressed continuously or it will give stable continuous output? Coz I am getting pulsating not