beside asics, there are also fpgas, which could eventually be interresting. with an altera 7128, you can get 84 outputs for about $9, or if you are happy with 0/3.3V, it drops by $1. for series production, you can migrate an altera design to clear logic. they produce asics based on fpga designs, with no nre cost. this drops the price by about 2. Tal Dayan Gesendet von: pic microcontroller discussion list 20.06.02 06:17 Bitte antworten an pic microcontroller discussion list An: PICLIST@MITVMA.MIT.EDU Kopie: Thema: [PIC]: cheapest way for adding output pins ? Hello, One of the designs I am working needs many (100 to 200) outputs pins (0/5V signal) controlled by a single mid size PIC. What is the cheapest way (cents per output pin) adding output pins to a PIC ? This is a mass production product but an ASIC is out of question at this point. Speed is not an a primary issue so using reasonable serial communication is OK. Thanks, Tal -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu