These are datasheets mostly of the parts that I've used, or have in my parts bin, or are currently reading up on. These are the ones I find useful of interesting for myself.
analog devices
atmel
harris
- ICL232 (RS232 level translator)
hitachi
- HD44780 (LCD controller)
intel
- 8255 (I/O controller)
intersil
- 8255 (I/O controller)
maxim
motorola
- mocz500 (zero-crossing triac driver)
national semiconductor
- ADC0831 (A/D converter)
- DS8838 (bus transceiver)
- LM301 (op-amp)
- LM317 (regulator)
- LM386 (op-amp)
- LM555 (timer)
- LM7512 (regulator)
phillips
- NE555 (timer)
samsung
- S6A0069 (LCD controller)
seimens
- 4N33 (opto-coupler)
sgs-thomson
- 4017 (decoded decade counter)
texas instruments
- 74174 (hex flip-flop)