Hi,
I am using an IR Receiver TSOP type and since its output is directly compatible with MCU. I am feeding the output of TSOP with pull up resistor 10K to RA4/T0CKI pin of PIC18F452.

I have tested the input pin of pic with another square wave which is able to trigger the schmit trigger but unfortunately IR Receiver output is not able to trigger the schmitt trigger of the MCU.

I am using HX1838 which detects 38 Khz frequency for which 555 is used. Its an active low output device. After I have made connection to the MCU, the idle output voltage is 1.63 V.

Is there any technique which i can employ and be able to detect output pulses from IR Receiver?

Reply will be greatly appreciated.

 

Someone else wanted to view IR pulses so here is repeat of ckt. Might want a red or white LED @ 20 mA.