I-LM339: Ukucaciswa okubalulekile neqhaza lawo kwizindawo zokuqhathanisa zeVoltage
2024-11-29 930

I-LM339, into ebalulekile yomndeni we-LMX39XC, ithole idumela eliphawuleka ngokuvumelana nezimo zalo nokuqina ngaphakathi kwemibuthano ye-elektroniki.Kukhombisa ukuqhathanisa ama-voltage amane, le yi-IC imele ukusebenza kwayo okungenamthungo ngawo womabili ama-voltage atholakalayo avela ku-2 v kuya ku-36 v. Ukuguquguquka kwayo indlela yokusetshenziswa kwama-design ahlukahlukene kuzo zonke izicelo zezimboni nakuthengi, edinga izixazululo ezifanele ukufeza izidingo ezithile.I-LM339 RELUREAL REAL igxilile emandleni awo okwenza kahle kuwo wonke amazinga ahlukahlukene ama-voltage, ukukulungisa njengetshe legumbi lokuqamba izixazululo ze-elektroniki.Emashumini eminyaka, izingxenye ezinjalo zikhombise ngokuqhubekayo indima yazo ekunciphiseni igebe phakathi kokuphumelela kwethiyori kanye nokusebenza okusebenzayo, okwenza njengemibhalo yokwakha ebalulekile ngaphakathi kwensimu yobunjiniyela.

Namabhuku

Ukucebisa okuvinjelwe ku-LM339 PIN yesakhiwo

Ukuzibeka ezimfanelweni ezithokozisayo kanye nokucaciswa kwe-LM339

Izinto ezihlelekile zesakhiwo

Umklamo wobuhlakani we-LM339 uhlanganisa okunguzimele ezine ezisebenzayo zeVoltage Voltage, isici esinciphisa ngobuchule ngekhono ukuphazamiseka komsindo phakathi kwemisebenzi ngakunye.Lokhu kucushwa okuhlaba umxhwele kubaluleke kakhulu ochwepheshe ababhekana nezinhlelo eziyinkimbinkimbi kagesi, ngoba zenza ukwenziwa okunembile nokwethenjwa kwe-bolsters - ikhwalithi ebaluleke kakhulu kwizicelo ezidinga ukunemba kwesiginali.Labo abasebenza ngezicelo ezibucayi bamandla zivame ukuthola lokhu kusetha kwe-multi-ukuqhathanisa kahle.

Ukucushwa kwamandla okuhlinzeka ngezinto eziguqulelayo

I-LM339 ihlanganisa umsebenzi owodwa wokuhlinzekelwa okuvela ku +3.0 v kuya ku-+36 v, ihlinzeka ngezimo eziguqukayo kuzo zonke izinhlelo zokusebenza ezahlukahlukene.Ngezimo eziphathwe kabili, isebenza ngokungasebenzi phakathi kuka + 18V no-18V, inikeza onjiniyela ukuguquguquka kwezidingo ezahlukahlukene ze-voltage.Le ndlela eguquguqukayo ivela ngaphambili ezimweni ezifuna izixazululo zokuphathwa kwamandla okuthembekile.

Okokufaka okufakiwe nokukhipha amamethrikhi

Izici eziyinkimbinkimbi zokufaka

Ngombhalo ophansi ophansi wokufaka okungamanga we-25 NA kanye ne-Offset Offset yamanje ye- ± 5.0 NA, i-LM339 inikeza ukunemba okusebenzisa izinhlelo zokusebenza lapho kuphambuka khona okuncane kakhulu kungathinta imiphumela.Ukufakwa kwayo okuncishisiwe kokufakwayo kwe-Offset Voltage kugcizelela lokhu kunemba, ngenkathi okufakwayo okujwayelekile kwe-voltage ibanga lokufinyelela ezingeni lomhlabathi likuqinisekisa ukuthi kungaphatha amasignali ahlukahlukene wokufaka.

Ukusebenza kokukhipha okuphawuliwe

Isebenza nge-voltage ye-voltage ye-voltage ye-130 MV nje yamanje ye-4.0 MA, i-LM339 isiza ukusebenza okusebenzayo kwamandla aphansi.Lokhu kuncishiswa kwamandla kagesi kuzuzisa ikakhulukazi amadivayisi anikwe amandla ebhethri, lapho ukunciphisa ukusetshenziswa kwamandla kubaluleke kakhulu.

Ukuhambisana nokuhambisana nokungavikelekile komthungo

Ukuvumelana kwalo nge-TTL ne-CMOS Devices kunwebisa ukusebenzisana kwe-LM339, okuvumela ukuthi kuhlanganiswe ngaphandle komthungo ezindaweni ezahlukahlukene zobuchwepheshe.Ngaphezu kwalokho, ukuvikelwa kwe-ESD kokufaka kwandisa ukwethenjwa kwedivayisi ngokukuvikela kusuka ekulimaleni okungaba khona kwe-static okungekho emthethweni - ukusebenza okubalulekile ezimeni zangempela zezwe.

Ukubambelela kumazinga wezemvelo nakwezokuphepha

I-LM339 iqondanisa namazinga aqinile ezemvelo, ukuba nama-PB-free, ama-halogen-free, futhi ahambisana namaRohs, ngaleyo ndlela abonise ukuzinikezela kwimigomo yokuqamba enobungane nephephile.Lezi zici zaziswa kakhulu kwimikhakha yanamuhla yezobuchwepheshe, lapho ukukhetha komkhiqizo kuthonywa khona ukubambelela okulawulayo kanye nokucatshangelwa kwemvelo.

Ama-74Hct20 afana namanye amasango anengqondo

-Lingene

CD4012,74s140,I-74HC20

Amanye amasango anengqondo

I-74LS00,74ls08,74ls02,74ls04,I-74Hct04

Usebenzisa i-74Hct20 ic

Le khasi I-74HCT20 iyisango le-NANDA ebilisiwe eli-4Isango ngalinye linokufakwa okune futhi lihlinzeka ngemiphumela esekelwe ku-Nend Rate Logic.I-IC ifaka ama-diode akwakhelwe ngaphakathi we-clamp, okuvumela ukuthi uxhume ngokuphepha amasiginali wokufaka adlula i-supply voltage (VCC) lapho usebenzisa abamela umkhawulo wamanje.

Ngokusetshenziswa okusebenzayo, ungahle uxhumanise le ec ukudala amasekethe we-buffer noma amasekethe we-incerter we-logic, okuvamile ezinhlelweni zokuxhumana zedijithali.I-74HCT20 ifana kakhulu ne-74HC20, enikeza cishe iPinkout efanayo nezici.Zombili zithembekile ngokwakha imisebenzi enengqondo emiklamo yedijithali ehlukahlukene.

Ukusetha i-74HCT20 kwisifunda sakho, iqale ngokuqinisekisa ukuthi ukuhlinzekwa kwamandla kuxhunyiwe kahle kwizikhonkwane ze-VCC nase-GND.I-PIN ngayinye yokufaka ingaxhunyaniswa kwizimpawu ezinengqondo, futhi kuzodingeka ukhethe ama-resistors afanelekile akhawulelwe lapho usebenza ngama-voltages okufaka aphezulu kune-VCC ukuvimbela ukulimala.

Lapho unezintambo zemiphumela, khumbula ukuziphatha kwesango leNand.Kuzokhipha isiginali ephansi kuphela lapho konke okokufaka kwaso kuphezulu;Ngaphandle kwalokho, umphumela uzoba phezulu.Lokhu kubalulekile lapho kuklanywa izinhlelo ze-logic, njengoba kunquma ukuthi i-IC ihlangana kanjani nezinye izinto esifundeni.

Njengoba ufaka okokufaka, unake i-oda lapho usebenzisa amasiginali, njengoba impendulo ye-IC izoncika ngesikhathi nokulandelana kokufakwayo.Amandla wokuxhumana nalesi i-IC enezimpawu ezingaphandle kwebanga elijwayelekile le-logic voltage lenza kube wusizo ikakhulukazi ezinhlelweni ezixubile ze-voltage.

Ithebula le-4 lokufaka i-NAMP Gate Truetable:

Ukuqala ukusebenzisa i-74Hct20 IC, okokuqala xhuma imigqa yamandla.I-PIN ye-VCC kufanele ixhunywe ekunikezelweni kwe-5V, bese iphini le-GND kufanele lifakwe.Leli yi-voltage ejwayelekile esebenza nge-IC, iqinisekisa ukuthi isebenza kahle ngaphakathi kwemibuthano evamile yedijithali.

Lapho i-IC inikwe amandla, i-voltage kagesi ePin Y izofanisa i-Supply Voltage (VCC).Lokhu kusho ukuthi uma uhlinzeka nge-5V, umphumela on phin y uzoba ngo-5v lapho umphumela wesango uphezulu.

I-74HCT20 iyisango eli-4-iNnd, ngakho-ke indlela yokuphuma ilandela iThebula Leqiniso Le-NAnd Gate.Ngamagama alula, okukhishwa kuzoba ngaphansi kuphela lapho konke okokufaka okuphezulu kuphezulu.Uma okukodwa noma ngaphezulu kokufakwa kuphansi, umphumela uzoba phezulu.Lokhu kubalulekile ukukhumbula lapho uhlela ukuthi i-Ic izoziphatha kanjani kwisifunda sakho.

Ukuze ufake izintambo i-IC, kubalulekile ukulandela umkhondo wezikhonkwane ezine zokufaka ngesango ngalinye.Kuya ngokuthi uxhuma kanjani okokufaka, okuphumayo kuzoba phezulu noma okuphansi ngokusho kwe-NAND Logic.Uma noma yikuphi ukufakwa kusethwe okuphansi, okukhishwa kuzokhuphuka.

Lapho uxhuma amasiginali wokufaka, cabanga ngezindawo zokuhamba nangengqondo.Isibonelo, uma ufuna okuphumayo kube ngaphezulu kwesikhathi esiningi, kufanele uqinisekise ukuthi akuzona konke okokufaka okuphezulu ngasikhathi sinye.Ukuziphatha kwe-IC kuyabonakala, kepha ukusetshenziswa kwayo esisekelweni sakho kuzoncika ekutheni ungakukhohlisa kanjani lokhu okufakwayo.

Okokugcina, qaphela umdwebo wesekethe wangaphakathi we-74HCT20 ukuze uqonde kangcono ukuthi okokufaka kucutshungulwa kanjani nokuthi kukhiqizwa kanjani.Lokhu kungakusiza ukuxazulula inkinga noma wandise ukwakheka kwakho lapho kunesidingo.

Izimo Zokusebenza

Oscillators

I-LM339 ithola ukusetshenziswa okubalulekile ekwakhiweni kwe-Oscillator, kunikezwe amandla ayo okusebenza ngaphezu kwebanga elibanzi le-voltage lisebenzisa ukuhanjiswa kwamandla okukodwa.Ngaphakathi kwendawo yama-elekthronikhi, ama-oscillator adlala izindima ezibalulekile, ezitholakala kumadivayisi wokuxhumana nezinhlelo ezibhekene nokuphehla iwashi.Onjiniyela badonswa ekuvinjelweni okuphezulu kwe-LM339, okwenza ukuthi ukudalwa kwama-Oscillators ahambisana nokuphathwa imvamisa, ukukhuthaza izixazululo ezintsha kuyo yonke imboni.

Ukuqhathanisa kwamandla kagesi

Kuzinhlelo zokusebenza ezifuna ukuqhathanisa voltage, i-LM339 yenzelwe ukunemba kwayo, ikwenza ukwazi ukubona nomehluko omncane we-voltage.Izimboni zisebenzisa le ic emisebenzini ethembele ekutholweni komkhawulo we-voltage veltage, njengezinkomba zeleveli yebhethri.I-hystesis eyakhelwe ngaphakathi inesandla ekusetshenzisweni okusebenzayo, ukunciphisa ngokuphumelelayo ukushintshana okulula lapho kusebenza amazinga aseThendu, kunikeza ukuthula kwengqondo ngokusebenza okuthembekile.

Peak Detoctors

I-LM339 iguquguqukayo ekwakhiweni kwama-peak detectors, kubalulekile ekuthumbeni i-apex yezimpawu eziguqukayo.Lezi zitokisi zithola ukusetshenziswa okuvama kakhulu ekusebenzeni komsindo wesiginali kanye nezinhlelo zokulinganisa nge-elekthronikhi.Amandla aphezulu okutholwa okuphezulu kwesiqondisi se-LM339 Umhlahlandlela olandelayo, aqinisekise ukuthembeka kumadivayisi afana nama-amplifier audio, lapho ukunemba kokuthembela khona okulalelwayo kuwukugcina.

Izinguqulo ze-Logic Voltage

Lapho ubhekene namazinga we-logic ahlukahlukene, i-LM339 ngempumelelo izinguqulo ezidingekayo.Inciphisa ukuxhumana phakathi kwamasekethe asebenza emazingeni ahlukene kagesi, avumela ukuhlanganiswa okubushelelezi ngaphakathi kwezinhlelo eziyinkimbinkimbi.Isikhathi sokuphendula esisheshayo se-LM339 sifanelekile ikakhulukazi ezimeni lapho isikhathi sokudluliswa kwedatha siyiphuzu eligxile kakhulu, njengasezinhlelweni ze-microcontroller, zithuthukisa ukusebenzisana komthungo ngaphakathi.

Ukubhekwa kwamandla

Ngezidingo zokugada kwamandla, i-LM339 iyithuluzi ekuhlolweni kobuqotho beMandla.Ingculaza ekwakheni amasekethe aklanyelwe ukuyeka imisebenzi ngesikhathi sezehlakalo ezingajwayelekile noma ezenzakalelayo, ezisetshenziswa kakhulu ezinhlelweni zokuvikela ngaphakathi kwamadivayisi we-elekthronikhi.Lezi zinyathelo zisiza ukugcina imishini isikhathi eside ngenkathi kuqinisekisa ukuphepha komsebenzisi, ukuqondanisa nezindlela zokuphathwa kohlelo lokuphatha.

Ukuqapha Kwezimboni

Ezindaweni zezimboni, le ec isetshenziselwa kakhulu ukwengamela amapharamitha ahlukahlukene njengokushisa nokucindezela.Kunomthelela kumaseli ahlelelwe ukuqwashisa nge-Threshold Gwoances, evimbela izimo eziphikekayo ezingenakuqhathaniswa.Ukufinyeleleka kanye nokuthembela kwe-LM339 kwenza kube yinto engokwemvelo ezinqubweni zokukhiqiza, imvamisa ifakwa ezinhlelweni zokulawula eziyinkimbinkimbi ukuthuthukisa ukusebenza kahle.

Izinsimbi Zokulinganisa

I-LM339 iphakamisa amakhono okulinganisa amathuluzi ngokuletha ukuqhathanisa okuqondile okubalulekile ekutholeni izilinganiso ezinembile.Kubalulekile kumasethekeli adinga ukusebenza kwezinzile kuwo wonke ama-voltage amabanga aphakeme, ikakhulukazi kumadivayisi anjenge-volutsmeter kanye nama-multimeter.Inhlanganisela yokusebenza kwezindleko nokunemba kwe-LM339 kwenza kube ukukhetha okuthandwayo kuyo yomibili imishini yokuxilonga ephathekayo futhi emile.

Izinhlelo zezimoto

Emkhakheni wezimoto, i-LM339 iguqulwa ngemisebenzi yokuqapha maqondana namapharamitha enjini kanye nempilo yebhethri.Ukuqina kwalo ezimweni eziyinselele kwenza kube yinto efanelekile yezimoto, ethuthukisa ukwethenjwa kwezinhlelo zokuphepha nokulawula.Abezizenzakalelayo, bagxile ekuhlanganiseni okuhlanganisiwe kwezakhi ezingabizi futhi eziqinile, thola i-LM339 ihlangabezana nalezi zidingo, ngaleyo ndlela ikhulisa ukusebenza kwezimoto ngaphandle kwezindleko zokukhiqiza ezengeziwe.

Imodeli ye-2D-74HCT20

Datasheet pdf

I-74HCT20 Dashashashiets