On Sun, 26 Nov 2006 11:14:39 -0600, "Yuriy K." <yktech@mail.ru> wrote:>Jim Thompson wrote: > >>>> For 3.3V to 5V Logic... >>>> >>>> http://analog-innovations.com/SED/LogicLevelTranslator74HC14-RevA.pdf > >>> Incredible. Designing complicated circuit instead of simply using >>> 74HCT14 / 74HCT04 / zillion other HCT74xx and AHCTxx ICs. >> >> You've just proved yourself an incredible dumb-shit ;-) >> >> You have NO clue what "HCT" actually means. It DOES NOT MEAN that a >> +3.3V CMOS input is satisfactory. > >Your ignorance is very loud and of highest quality, I must admit. >Not everybody can achieve that level. Have you ever read datasheet, or >any textbook for the EE? "The Art of Electronics" would be a good start. > >SN74HCT14 (www.ti.com) > >VT+ max 2.1V >VT- min 0.5V > >SN74HCT04 (www.ti.com.) > >VT+ max 2.1V >VT- min 0.5V > >Other manufacturers have similar characteristics. > >Typical 3.3V logic: > >SN74HC04 > >VoutH min 3.2V @ 20uA >VoutL max 0.1V @ 20uA > >After all these years of design it is finally time to learn the basics. :)Hey fuckhead. I re-designed those parts for ON-Semi. You are clueless as to good engineering practice. ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
3.3v <> 5v interfacing @ 15Mhz
Started by ●November 25, 2006
Reply by ●November 26, 20062006-11-26
Reply by ●November 26, 20062006-11-26
Jim Thompson wrote:>>>>Incredible. Designing complicated circuit instead of simply using >>>>74HCT14 / 74HCT04 / zillion other HCT74xx and AHCTxx ICs.>>>You've just proved yourself an incredible dumb-shit ;-)> Keep it up. Everybody is realizing the "value" of your consultancy > ;-) > > You read a data sheet without understanding. > > ...Jim Thompson If you have something meaningful to say, then go ahead and tell us. Otherwise have the courage to admit that you just made a fool of yourself, my dear analog desiner. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
Reply by ●November 26, 20062006-11-26
Jim Thompson wrote:>>>>> For 3.3V to 5V Logic...>> SN74HCT14 (www.ti.com) >> VT+ max 2.1V >> VT- min 0.5V >> >> SN74HCT04 (www.ti.com.)Correction: ViH min 2.0V ViL max 0.8V>> Typical 3.3V logic: >> SN74HC04 >> VoutH min 3.2V @ 20uA >> VoutL max 0.1V @ 20uA> Hey fuckhead. I re-designed those parts for ON-Semi. > You are clueless as to good engineering practice.A lot of noise, no information whatsoever. It is a sign of weakness and I forgive you. Be at peace with yourself. -- WBR, Yuriy. "Resistance is futile"
Reply by ●November 26, 20062006-11-26
On Sun, 26 Nov 2006 18:29:28 GMT, Vladimir Vassilevsky <antispam_bogus@hotmail.com> wrote:> > >Jim Thompson wrote: > >>>>>Incredible. Designing complicated circuit instead of simply using >>>>>74HCT14 / 74HCT04 / zillion other HCT74xx and AHCTxx ICs. > >>>>You've just proved yourself an incredible dumb-shit ;-) > > Keep it up. Everybody is realizing the "value" of your consultancy > > ;-) > > > > You read a data sheet without understanding. > > > > ...Jim Thompson > > > >If you have something meaningful to say, then go ahead and tell us. >Otherwise have the courage to admit that you just made a fool of >yourself, my dear analog desiner. > > >Vladimir Vassilevsky > >DSP and Mixed Signal Design Consultant > >http://www.abvolt.comApply +2.4V Input to an HCTxx running on VDD = +5V and what happens? ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 26, 20062006-11-26
On Sun, 26 Nov 2006 12:36:50 -0600, "Yuriy K." <yktech@mail.ru> wrote:>Jim Thompson wrote: > >>>>>> For 3.3V to 5V Logic... > >>> SN74HCT14 (www.ti.com) >>> VT+ max 2.1V >>> VT- min 0.5V >>> >>> SN74HCT04 (www.ti.com.) > >Correction: >ViH min 2.0V >ViL max 0.8V > >>> Typical 3.3V logic: >>> SN74HC04 >>> VoutH min 3.2V @ 20uA >>> VoutL max 0.1V @ 20uA > >> Hey fuckhead. I re-designed those parts for ON-Semi. >> You are clueless as to good engineering practice. > >A lot of noise, no information whatsoever. >It is a sign of weakness and I forgive you. >Be at peace with yourself.And piece be with you also... GFY ;-) ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 26, 20062006-11-26
Jim Thompson a �crit :> On Sun, 26 Nov 2006 18:29:28 GMT, Vladimir Vassilevsky > <antispam_bogus@hotmail.com> wrote: > >> >> Jim Thompson wrote: >> >>>>>> Incredible. Designing complicated circuit instead of simply using >>>>>> 74HCT14 / 74HCT04 / zillion other HCT74xx and AHCTxx ICs. >>>>> You've just proved yourself an incredible dumb-shit ;-) >>> Keep it up. Everybody is realizing the "value" of your consultancy >>> ;-) >>> >>> You read a data sheet without understanding. >>> >>> ...Jim Thompson >> >> >> If you have something meaningful to say, then go ahead and tell us. >> Otherwise have the courage to admit that you just made a fool of >> yourself, my dear analog desiner. >> >> >> Vladimir Vassilevsky >> >> DSP and Mixed Signal Design Consultant >> >> http://www.abvolt.com > > Apply +2.4V Input to an HCTxx running on VDD = +5V and what happens? >Well, you can't expect a digital guy to know that. Hmmm, gave me an idea :-) -- Thanks, Fred.
Reply by ●November 26, 20062006-11-26
Jim Thompson wrote:>>>>>>Incredible. Designing complicated circuit instead of simply using >>>>>>74HCT14 / 74HCT04 / zillion other HCT74xx and AHCTxx ICs. >>>>>You've just proved yourself an incredible dumb-shit ;-) >>> >>>Keep it up. Everybody is realizing the "value" of your consultancy >>>;-) >>> >>>You read a data sheet without understanding. >>> >>> ...Jim Thompson >> >> >> >>If you have something meaningful to say, then go ahead and tell us. >>Otherwise have the courage to admit that you just made a fool of >>yourself, my dear analog desiner. >> >> > > Apply +2.4V Input to an HCTxx running on VDD = +5V and what happens? >Nothing happens. The 2.4V reads as a clear 1, the threshold is at 1.4V +/- hysteresis of 100mV, the propagation delay is about 5ns/10ns fall/raise accordingly. The current consumption at 2.4Vin/5Vdd is 1mA which is perfectly within the allowed limits. Jim , you goofed up and I suggest you to bring your apologies. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
Reply by ●November 26, 20062006-11-26
On Sun, 26 Nov 2006 20:14:36 GMT, Vladimir Vassilevsky <antispam_bogus@hotmail.com> wrote:> > >Jim Thompson wrote: > >>>>>>>Incredible. Designing complicated circuit instead of simply using >>>>>>>74HCT14 / 74HCT04 / zillion other HCT74xx and AHCTxx ICs. >>>>>>You've just proved yourself an incredible dumb-shit ;-) >>>> >>>>Keep it up. Everybody is realizing the "value" of your consultancy >>>>;-) >>>> >>>>You read a data sheet without understanding. >>>> >>>> ...Jim Thompson >>> >>> >>> >>>If you have something meaningful to say, then go ahead and tell us. >>>Otherwise have the courage to admit that you just made a fool of >>>yourself, my dear analog desiner. >>> >>> >> >> Apply +2.4V Input to an HCTxx running on VDD = +5V and what happens? >> > > >Nothing happens. The 2.4V reads as a clear 1, the threshold is at 1.4V >+/- hysteresis of 100mV, the propagation delay is about 5ns/10ns >fall/raise accordingly. The current consumption at 2.4Vin/5Vdd is 1mA >which is perfectly within the allowed limits. > >Jim , you goofed up and I suggest you to bring your apologies. > >Vladimir Vassilevsky > >DSP and Mixed Signal Design Consultant > >http://www.abvolt.com > >Allowing a static (and *undefined* BTW... 1mA if you're lucky) current flow is NOT good engineering practice, and it's NEVER done in well-designed ASIC's. To see how a 3.3V Logic Level to 5V Logic Level Translator is done properly (in ASIC's designed specifically for that purpose), see... http://analog-innovations.com/SED/LogicLevelTranslator.pdf Dimensions are "pre-shrink" BTW, as if you'd know what that means ;-) I used a similar scheme in my USB interface work for Intel. Unfortunately the patents don't show that part, since it's old art. Expect my apologies about the time Russia actually becomes a Democracy and Iran becomes Jewish ;-) ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 26, 20062006-11-26
On Sun, 26 Nov 2006 13:42:53 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote: [snip]> >Allowing a static (and *undefined* BTW... 1mA if you're lucky) current >flow is NOT good engineering practice, and it's NEVER done in >well-designed ASIC's. > >To see how a 3.3V Logic Level to 5V Logic Level Translator is done >properly (in ASIC's designed specifically for that purpose), see... > >http://analog-innovations.com/SED/LogicLevelTranslator.pdf >[snip] Also: Static current for this structure is zero, except for nA's of leakage. ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●November 26, 20062006-11-26
Jim Thompson wrote:> On Sun, 26 Nov 2006 20:14:36 GMT, Vladimir Vassilevsky > <antispam_bogus@hotmail.com> wrote: >[snip]> Allowing a static (and *undefined* BTW... 1mA if you're lucky) current > flow is NOT good engineering practice, and it's NEVER done in > well-designed ASIC's. > > To see how a 3.3V Logic Level to 5V Logic Level Translator is done > properly (in ASIC's designed specifically for that purpose), see... > > http://analog-innovations.com/SED/LogicLevelTranslator.pdfJim, your schematic is lacking the power details. How are the HC04 powered ? +3.3V or +5V ? Rene -- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
