piclist-bounces@mit.edu wrote: > Imho the clamp current specification (input *AND* output, no > less) is useless and wrong (and dangerous - I have to modify > my board). [snip] > Any comments are welcome. The specs you listed come from Absolute Maximum ratings. The datasheet very clearly says this is a stress rating only and functional operation is not implied. The absolute max ratings only list the guaranteed limits under which the device will not emit the magic smoke. Note there is still some debate wrt to the input protection diodes. I never use them intentionally, since doing so implies i'm violating the input voltage specs. The spec is Vss-0.6V. You say you put -8.2V on an input. Thats clearly out of spec. The only reason you might be measuring -0.6V is because the diodes are already conducting... -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist