Post by thread:[OT] Does anyone know of a Bidirectional RS-232 dr

Hi all Sorry this is off topic...But is need for a PIC project..... Does anybody know of a bidirectional RS-232 drive IC...with as many lines as possible.. Thanks Jonathan Ferguson Radiation/Microelectronic Group Lancaster University

<x-flowed>Hi You can use MAX232 or ICL232. Both IC's have 2 drivers and 2 receivers. I hope this solves your problem. Yasir Ahmed {Quote hidden}>From: Jonathan Ferguson <spam_OUTJ.FergusonTakeThisOuTLANCASTER.AC.UK> >Reply-To: pic microcontroller discussion list <.....PICLISTKILLspam@spam@MITVMA.MIT.EDU> >To: PICLISTKILLspamMITVMA.MIT.EDU >Subject: [OT] Does anyone know of a Bidirectional RS-232 drive IC >Date: Wed, 9 Feb 2000 17:33:13 -0000 > >Hi all > >Sorry this is off topic...But is need for a PIC project..... > >Does anybody know of a bidirectional RS-232 drive IC...with as many lines >as >possible.. > >Thanks > >Jonathan Ferguson >Radiation/Microelectronic Group >Lancaster University ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com </x-flowed>

We use Sipex SP240, which is a cheaper alternative to a MAX240. Generates the +/- for you. It has 5 drivers and 5 receivers. Look at http://www.maxim-ic.com and http://www.sipex.com. There must be many others. At 05:33 PM 2/9/00 -0000, you wrote: {Quote hidden}>Hi all > >Sorry this is off topic...But is need for a PIC project..... > >Does anybody know of a bidirectional RS-232 drive IC...with as many lines as >possible.. > >Thanks > >Jonathan Ferguson >Radiation/Microelectronic Group >Lancaster University > > David Lions Lab Technician Miva Corporation

Also, if you want lot's of UARTs, Phillips make a chip called SCC2698B, which provides no less than "eight full-duplex asynchronous receiver/transmitter channels" in DIP64 or PLCC84. It is also easy to interface to a PIC (needs 8 bit data bus, 5 address, /RD and /WR lines, that's less i/o pins than 8 bit-banged channels). Not to mention faster speeds, and no bit rate error :^P At 05:33 PM 2/9/00 -0000, you wrote: {Quote hidden}>Hi all > >Sorry this is off topic...But is need for a PIC project..... > >Does anybody know of a bidirectional RS-232 drive IC...with as many lines as >possible.. > >Thanks > >Jonathan Ferguson >Radiation/Microelectronic Group >Lancaster University > > David Lions Lab Technician Miva Corporation

Also, if you want lot's of UARTs, Phillips make a chip called SCC2698B, which provides no less than "eight full-duplex asynchronous receiver/transmitter channels" in DIP64 or PLCC84. The 2698 is sort of ... old, isn't it? (Tiny FIFOs, low max bps rate, etc.) The Cirrus uarts (now from Basis Communications, I guess) are much nicer from a usage perspective (but they seem to come in MQFP-100 packages, making them a bit tougher to deal with...) BillW