Is this some IR transceiver?
It has 8 surface mount pins, 1&2&4&5 are tied to GND, 3&8 to 5V, 6 seems to go directly to a uC, 7 goes to a low side switch which seems to pull down a uC leg.
I would like to know if it's just a plain diode and transistor or if it works with some carrier.
For information only, this sits on the top of a coffee machine which I'm taking apart (Saeco) so I either assume it's some sort of IR for optional remote control (I don't think it has such an option), a proximity sensor (not implemented) or some serial communication for servicing. The machine still works (or worked), I'm just hacking it to make it better since it has a lot of software design flaws.