Yes, the ST website has a search function but I can´t find it.
See the attached pdf
http://files.engineering.com/getfile.aspx?folder=f6389edb-8cea-40aa-a83c-fd41b49f58f5&file=Scan_ST.pdf
The board is the transmitter of a photoelectric barrier with 3x16 emmiters LEDs.
The oscillator ST ?? is the oscillator to 3x CD4017.
Is not a PLD, it is similar to : NE555+CD4098
It is broken and I need the reference to replace...
Hello
can someone tell me which is the reference of an integrated circuit ST with these data:
14 pins.
pin 3 VDC (+ 12V)
pin 12 GND
I think these are:
pin 1 output of an oscillator
pin 13 rising edge pulse oscillator (not duration)
pin 14 of the trailing edge pulse oscillator ""
and the rest...
