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[PIC] problem in Interfacing with PIR SENSOR

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Vaishnav Venu

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Hi,

My pir sensor output is showin only 3.3 V , & i would like to interface this to PORT B of pic16f877a but then inorder to make the port high , there should be 5V , ryt?
& but PIR Sensor Output is only 3.3V , So how i can solve this.
Should i use relay or something ?
or is there any other way like using the internal pull up resistors of port B?
 

3.3V will be considered as logic high. Check the range of voltages for VIH and VIL for PIC. It is compatible with all TTL devices.
 

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