HP 1820-1584 IC replacement?

ard＠p850ug1.demon.co.uk

13 May 2013 13 May '13

2:39 p.m.

...

Thanks Rik, that was a great idea. Swapped the chips tonight and I now=20 have a working plotter. I sure hope other chips don't die.

No specifications of this chip? Maybe someone could create a functional= replica on PLD! :)

Err, no. Logically, the devie is very simple (it's simialr to the 74LS245) but the problem is that one side of it does not work with TTL levels. It's a level shifter too. And very few (if any) PLDs can handle that. -tony

Back to the thread

Back to the list