Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!snorkelwacker!usc!zaphod.mps.ohio-state.edu!rpi!nisc.nyser.net!rodan!amichiel From: amichiel@rodan.acs.syr.edu (Michielsen) Newsgroups: sci.electronics Subject: Re: Using MC1488 for TTL->RS-232 Message-ID: <1640@rodan.acs.syr.edu> Date: 2 Jan 90 16:03:27 GMT References: <1990Jan1.001244.24596@utzoo.uucp> <1381@umigw.MIAMI.EDU> Reply-To: amichiel@rodan.acs.syr.edu (Michielsen) Organization: Syracuse University, Syracuse, NY Lines: 23 In article <1381@umigw.MIAMI.EDU> dnelson@mthvax.cs.miami.edu (Dru Nelson) writes: >The MC145406 requires + and - >5 volts to + and - 12 volts power supply >There >are 3 drivers and 3 receivers per package. > >Recently introduced is the + 5 volt only MC145407P which only requires >+5 volt input supply and generates internally + and - 10 volts to >permit full compliance with the RS-232 spec. There is enough supply >power generated to power an additional MC145406 device if so desired. >The MC145407 has three drivers and three receivers also. > Has anyone seen pricing for these chips ? (quan 1 & quan 1K) Does anyone know if SK or ECG or other has already or plans to product a replacement (copy) ? Has anyone found these (starting to be or whatever) being stocked on the local level at electronic supply or hobby shops or something ? Is the old maxi 5 Vcc rs232 driver chip directly replaceable by the MC145407, or did MC pick some different pin out ? AL