If you talk about the TTLs 74F32, 74ALS244 and 74ALS245 in SOP/SOIC packages, any electronics supplier like Mouser, Digikey, etc. can provide you these chips. On my DUO there are Texas Instruments, but other brands have these logic ICs.
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Show posts MenuQuote from: Keith Courage on 09/29/2017, 09:29 PMI 2nd that. I've had to redo many cap changes done by previous people. Usually things not cleaned up well at all and typically I find a few caps with leads that are bridging over other traces on the board. Sometimes I find some cap leads are not even soldered into place.I agree. DUO's, Mega CD1 and GameGear are prone to similar problems due to SMT caps, sometimes I must spend a lot of time to remove the previous job and properly clean the PCB