A quick search in pic list archive and voila! http://www.piclist.com/techref/piclist/weedfreq.htm the ic is 74hc132! Regards Tal Bejerano AMC - ISRAEL -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Quentin Sent: Sunday, November 17, 2002 11:01 AM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC]: can u identify the chip? Since it has somekind of analogue switching input, I would rather make it a 4093 (Quad NAND with schmidt trigger). OTOH, I am sure the function of the logic circuit can be done in software in the PIC. Just limit your input voltage level. -- Quentin qsc@iptech.co.za www.iptech.co.za -- 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