DETERMINATE PIN OF IR RECEIVER CHQ-K12

Hello everyone,im trying to determine a pinout for an ir receiver that i salvage from an old dvd, here is a picture,CHQ-K12 is the name of the product but i cannot find any diagram on the internet

Several others look alike. : Connections (ref. picture) from left: Out, Gnd, Ucc(3.3V)
Use internal pullup for reader_pin

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