current for I/O pins

Rabbit
1

hi,

Does any one know much much current do the I/O pins for the 4400 rabbit board operate at?

Thanks

2

Also

Can we use Sharp PC817 to drive a solid state relay Clare SPC1918 directly or without using an intermediate driver?

Thanks,
Boparai

3

This is so cheap and simple i don’t know why you wouldn’t do it this way.

This is NOT my work.

Scroll down to “Using a transistor as a switch.”

http://www.kpsec.freeuk.com/trancirc.htm