When HP split up a few years ago the chips went to Agilent: http://www.semiconductor.agilent.com/ -------Original Message------- From: Art Sent: 07/31/03 04:40 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [OT}: Fast optoisolator with totem pole output?? > > Thanks Bob! I have used their VCSEL laser diodes, and a high end optoisolator (rated at 10 Mhz analog using a photodiode and a high speed transistor). I know the high speed device I used DOES NOT have the voltage rating I need however and it was not a totem pole type output. I'll swing by HP and do some searches! Regards, Art At 02:16 PM 7/31/03 -0700, you wrote: >You'll need to look at HP Optoelectronics. They sell very fast optical >switches, although 1uS is pretty fast, in my book. > >--Bob > >At 04:49 PM 7/31/2003 -0400, you wrote: >>Greetings, >> >>I'm looking for a fast opto device that will switch ~150v dc in less than a >>microsecond. If it can do it in 250 nanoseconds, I'd be a happy camper, but >>can settle for a microsecond:>: >> >>The devices I've found handle the voltage ok, but they seem to be based on >>phototransistors and they just don't switch fast enough. >> >>I did a bench test with a small photodiode driving an mpsa42/mpsa92 >>transistor(s) and it worked ok, but I'd like a prepackaged chip rather than >>a homebrewed solution:>: >> >>Any ideas?? >> >>Thanks, >> >>Art >> >>-- >>http://www.piclist.com hint: PICList Posts must start with ONE topic: >>[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > >--------------- >NOTICE > >1. This account can accept email & attachments up to 10M in size. >2. Federal Monitors: At request of client, some attachments are encrypted. >Please DO NOT delay traffic; please reply with credentials for password. >-------------- > >-- >http://www.piclist.com hint: PICList Posts must start with ONE topic: >[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.