I am designing a circuit with many (4-128) copies of the same component. It's a 4-pin opto-isolator with opto-triac output. I am aware that the pin spacing and package width can't be much less in order to maintain isolation. However, outside the IC I am tying all of the cathodes (or anodes) together, and tying all of one side of the AC together as well. It would save me a lot of IC footprint if I could find dual or quad versions of this device with those legs already joined and brought out as a single common pin. Does such a device exist?
Best Answer
As far as I know, optoisolators with triac outputs are not usually manufactured in the configuration you speak of.
If board space is a concern, you can select the 4-pin triac-output optoisolators instead of the 6-pin versions which would probably allow you to pack more optoisolators on the same board space.
Toshiba does manufacture dual and quad triac-output optoisolators, TLP525G-2 and TLP525G-4 respectively. The TLP525G-2 is a DIP-8, and the TLP525G-4 is a DIP-16. However, the individual channels within the package do not share any pins. Despite this, you might still be able to save board space by using a TLP525G-2 instead of two DIP-4 or DIP-6 optoisolators.
The dual channel version is available on Mouser and Digikey, I couldn't find a distributor that has the quad version in stock.