Article View: sci.electronics
Article #21938Re: Using MC1488 for TTL->RS-232
From: Dan Freitas
Date: Mon, 01 Jan 1990 01:48
Date: Mon, 01 Jan 1990 01:48
20 lines
1242 bytes
1242 bytes
>The right way to convert TTL to RS232 is to use the Maxim MAX232 or any
>of several related chips from Maxim and others. They include both
>transmitters and receivers, generate the necessary voltages themselves
>from +5 (with the aid of a few capacitors), and hew rather closer to
>the RS232 specs to boot. The MC1488 is obsolete.
>--
I just got a sample of such a chip from Motorola. It is the MC145407
5v only driver/receiver. Drives/Receives 3 separate lines. You add (4)
10uf caps, 5v and your on your way.
Dan Freitas
--
UUCP : {decvax,ucbvax,hplabs}!decwrl!mips!freeptos or freeptos@mips.com
USPS : Mips Computer Systems; 930 Arques Ave; Sunnyvale, Ca 94086
PHONE: 408-991-0217
Technical Details
Message-ID:
<34032@mips.mips.COM>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!samsung!zaphod.mps.ohio-state.edu!mips!krell!freeptosReferences:
<MZb4w2600WB88M=4wv@andrew.cmu.edu> <1990Jan1.001244.24596@utzoo.uucp>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!samsung!zaphod.mps.ohio-state.edu!mips!krell!freeptos From: freeptos@mips.COM (Dan Freitas) Newsgroups: sci.electronics Subject: Re: Using MC1488 for TTL->RS-232 Message-ID: <34032@mips.mips.COM> Date: 1 Jan 90 01:48:36 GMT References: <MZb4w2600WB88M=4wv@andrew.cmu.edu> <1990Jan1.001244.24596@utzoo.uucp> Sender: news@mips.COM Reply-To: freeptos@mips.COM (Dan Freitas) Organization: MIPS Computer Systems, Sunnyvale, CA Lines: 20