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Article #17914Re: TTL Questions
From: dje
Date: Thu, 13 Aug 1987 21:24
Date: Thu, 13 Aug 1987 21:24
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In 1976 H.P. Waltham started using 74LS TTL. We recieved a waiver on the input voltage specs of all LS TTL from T.I. (our only LS TTL supplier at the time) to apply up to +15 Volts to LS inputs. We needed this so we could easily interface to the HP designed state-of-the-art +12V SOS CMOS 16 bit processor (the MCC). So I guess higher voltages Into LS is (or was) OK. Dave Erickson ---------------------------------------------- ------ Datacube Inc. / /| 4 Dearborn Rd. ------ | Peabody, Ma 01960 || \| | ihnp4!datacube!dje || /|/ Human:(617)535-6644 ------ Fax: (617)535-5643
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!cca!mirror!datacube!dje From: dje@datacube.UUCP Newsgroups: sci.electronics Subject: Re: TTL Questions Message-ID: <100500018@datacube> Date: Thu, 13-Aug-87 17:24:00 EDT Article-I.D.: datacube.100500018 Posted: Thu Aug 13 17:24:00 1987 Date-Received: Sun, 16-Aug-87 06:23:15 EDT References: <1395@crash.CTS.COM> Lines: 17 Nf-ID: #R:crash.CTS.COM:-139500:datacube:100500018:000:651 Nf-From: datacube.UUCP!dje Aug 13 17:24:00 1987