7408 Logic Logic Gate Chip Ultimate Umhlahlandlela: Pinkout, Izici Nezicelo
2025-04-02 13056

Emhlabeni wedijithali elekthronikhi, izifunda ze-Logic Gate ziyisisekelo sokwakha zonke izinhlelo eziyinkimbinkimbi, futhi ic 7408 ingummeleli wamadivayisi ayisisekelo anjalo.Njenge-chip ehlanganisa okufakwayo okubili okuzimele okubili namasango, i-IC 7408 isetshenziswa kabanzi kumamojula wesifunda edijithali njengezinto zokubala, izincazelo, kanye nezikhethi zedatha.Le ndatshana izokwethula ngokuhlelekile amaphoyinti wolwazi osemqoka we-IC 7408. Ukusuka ekuchazeni kwayo, umsebenzi wePin, ukucacisa okucacisiwe kanye nemigomo yokusebenza, ngithemba ukuthi lokhu okuqukethwe kungakunikeza imininingwane engokoqobo.

Namabhuku

Yini i-IC 7408

I-IC 7408, eyaziwa nangokuthi i-IC 74LS08, iyisifunda esihlanganisiwe esihlanganisa okuhlukile namasango, ngalinye lifakwe okokufaka okungu-8-bit.Le ic iyingxenye yochungechunge lwe-74xxyy.Kanye namasango, izakhi ezibalulekile zalesi sici, zidlala indima ebaluleke kakhulu ekushintsheni izifunda ze-logic.Kula ma gates, kusetshenziswa izinhlobo ezimbili zezimpawu zokuqonda.

Ifomu eliyinhloko liyisibonakaliso esisezingeni eliphakeme, lisebenza ngaphakathi kwebanga le-voltage le-3-5v.Ngakolunye uhlangothi, ifomu lesibili liyisiginali esezingeni eliphansi, aqhekeka ezingeni le-voltage le-2-0.2v.Ngayinye nesango ku-IC788 kudinga izikhonkwane eziyisithupha zokufaka kanye nezikhonkwane ezimbili zokukhipha ukuze zisebenze kahle.

Imiphumela iyakwazi okukhona ezifundeni eziphakeme neziphansi.Kodwa-ke, ngoba okuphumayo okuphezulu, zombili izifundazwe zokufaka kumele futhi ziphakeme.

Imvamisa, i-IC 7408 inama-4 namasango, ngalinye liyakwazi ukusebenza ngokuzimela ngaphandle kokuthinta abanye.

Ngaphezu kwalokho, i-74LS08 idinga umthombo owodwa wamandla, futhi umphumela wayo uvumelanisa ngokungaguquki namadivayisi we-TTL namanye ama-miccoctortoller.Lokhu kwenza kube ukukhetha okuthembekile konjiniyela abaningi kanye nabathandi be-elekthronikhi.

IC 7408 Pinkout

Izici ze-7408 ze-IC zifaka izikhonkwane eziyi-14, zinikeza uhla lokusebenza okufana nokunika amandla amasango anengqondo, kanye nokwenza lula okokufaka kanye nemiphumela.

Ukucushwa kwe-PIN kungokulandelayo

Incazelo yePin

IC 7408 umdwebo wesekethe

IC 7408 Izici kanye Imininingwane

Ibanga le-voltage elisebenzayo: +4.75 kuya ku-5.25v

I-voltage enconyiwe yokusebenza: + 5V

I-Supply Supply Voltage: 7V

Ubuningi bamanje buvunyelwe ngokuphuma ngakunye: 8mA

Ukukhishwa kwe-TTL

Ukusetshenziswa kwamandla okuphansi

Isikhathi Sokuhlangothi Esijwayelekile: Ama-18ns

Isikhathi esijwayelekile sokukhohlisa: 18ns

Ukushisa okusebenzayo: 0 ° C kuya ku-70 ° C

Ukushisa kokugcina: -65 ° C kuya ku-150 ° C

Ukucaciswa kwe-elekthronikhi

Ukucushwa: Kutholakala emaphaketheni amnandi noma we-PDIP, ingxenye yochungechunge lwe-TTL Logic.

I-14-pin dual in-line (DIL): Inikeza ukucushwa okujwayelekile ukuze kube lula ukusetshenziswa.

Okuzimele 2-okokufaka namasango: kuhlanganisa amasango amane anjalo.

Izilinganiso eziphezulu ngokuphelele: Faka nokubambezeleka okuphezulu okuphezulu kwe-10 NS, uhla lokushisa olusebenzayo lwe -55 ° C kuya ku-125 ° C, nokusebenza okuphezulu okuphezulu ku-10 MHz.

Izimo Zokusebenza

- Izici zikagesi: Ukucaciswa okunemininingwane kwamandla kagesi wokufaka okufakwayo, okuphezulu okuphezulu kanye namandla okukhipha, okufaka okufakiwe kwamanje, okuphezulu okuphansi okukhona, okukhipha okuphansi okukhona, nokunikezwa kwamanje.

Okufanayo i-IC 7408

74ls08: Uhlobo lweSchottky olusezingeni eliphansi, ukuhlinzeka ngokusebenza okufanayo kepha ngokusetshenziswa kwamandla okujwayelekile kanye nezimpawu zikagesi ezihlukile.

74hc08: Uhlobo lwe-CMOS enesivinini esiphakeme, edume ngokusebenza ngejubane eliphakeme ngokuqhathaniswa nenguqulo ejwayelekile ye-TTL.

I-74Hct08: Inguqulo ye-CMOS enesivinini esiphakeme ehambisana ne-TTL, ehlanganisa izinzuzo ze-CMOS Technology ngokuhambisana namazinga we-TTL Voltage.

Umgomo Wokusebenza we-IC 7408

I-IC 7408 iqukethe ezine namasango, ngamunye athola amasiginali amabili wokufaka.Isango ngasinye senza okuyisisekelo nokusebenza, okusho ukuthi zombili okokufaka ziphezulu (izinga le-logic 1), okuphumayo kuphezulu (1).Uma noma yikuphi ukufakwa kuphansi (Logic 0), okuphumayo kuphansi.Ngokusekelwe kwimigomo ye-TTL (Transistor-Transistor Logic), i-IC 7408 yakha ukuphuma kwesango ngasinye, okudluliselwa ngezikhonkwane ezifanayo zokukhipha.Ngakho-ke, i-IC 7408, eyaziwa ngama-2-okokufaka ama-2 okufakwayo namasango, isetshenziswa kabanzi kuzicelo ezahlukahlukene ze-elekthronikhi ngenxa yokusebenza kwayo kanye nokwethenjwa.

Ungayisebenzisa kanjani i-IC 7408

I-IC 7408 isebenzisa futhi i-Gate Logic, eza ngezinhlobo ezintathu zenhlanganisela.Inhlanganisela ngayinye ikhiqiza izinga lokuphuma ngokususelwa ezingeni elithile lokufaka lokufaka.Kulokhu, amasango asetshenziswa kusetshenziswa ama-tratistors.

Njengoba kuboniswe kumdwebo ongezansi

I-Chip iqukethe amachweba amane e-DNA axhunyiwe ngaphakathi, ngembobo ngayinye esebenza nokusebenza kokufakwa okunengqondo okubili.Isibonelo, i-Port 1 yenza umsebenzi we-DNA phakathi kwe-A1 ne-B1, ukuhlinzeka okukhipha e-terminal y1.

Ithebula leqiniso le-nesango limi ngokulandelayo

Ukuze ubonise umqondo ongenhla, ake sibheke umjikelezo olula wohlelo lokusebenza lwesango nesango, njengoba kukhonjisiwe kumdwebo olandelayo.

Ukuqonda okungcono kokusebenza kwangaphakathi, singabhekisa kumjikelezo olula wangaphakathi wesango nesango, eliboniswe ngezansi.

Kulesi sifunda, ama-transristors amabili achungechunge enza isango.Ama-terminals amabili wokufaka wesiqu sesango esivela kuma-terminals ayisisekelo alezi zinto ezimbili zokudlulisela.Lokhu okokufaka kuxhuma kuma-node ukuze kuguqulwe okunengqondo kokufakwa.Ukukhishwa kwesango kungamandla kagesi ngaphesheya kwe-R1.Lokhu kukhipha kuxhunyaniswa ne-LED D2 ngokusebenzisa i-Resistar Resistor yamanje yokuthola u-R1 ukuthola isimo sokuphuma.

Isifunda esisebenzayo singahlukaniswa ngezigaba ezilandelayo

Isigaba 1: Uma kungacindezelwa inkinobho, okwamanje emaphethelweni owomile womabili ama-transistors yi-zero.Ngenxa yalokho, ama-transtors Q1 no-Q2 bavaliwe, okwenza ukuthi i-voltage yamandla e-VCC aphelele avele kuwo wonke.Njengoba i-VCC ephelele ivela ngaphesheya kwama-transistors, akukho ukwehla kwamandla kagesi ngaphesheya kwe-R1, okuholela ekukhishweni okungamazinga aphansi.Ngakho-ke, lapho okokufaka kuphansi, umphumela uphansi.

Isigaba 2: Lapho noma iyiphi inkinobho icindezelwe, i-transistor eyodwa iyavuleka, kanti enye ivalwa.I-transistor isebenza njengesifunda esifushane, ngenkathi i-transtor isebenza njengesifunda esivulekile, ibonisa i-VCC ephelele.Ngalesi sikhathi, ukwehla kwamandla kagesi ngaphesheya kwe-R1 kungu-zero, kugcina okukhipha ezingeni eliphansi.Ngakho-ke, lapho okokufaka kuphansi, umphumela uhlala uphansi.

Isigaba 3: Lapho zombili izinkinobho zicindezelwa, zombili ziziphatha, futhi amavoluti kuwo wonke ama-zero, okwenza ukuthi i-vcc ephelele ivele ngaphesheya kwe-R1.Njengoba okukhishwa kumane nje kungamandla kagesi ngaphesheya kwe-R1, kuphakeme.Ngakho-ke, lapho bobabili okokufaka kuphezulu, umphumela uphezulu.

Ngemuva kokuqinisekisa lezi zizwe ezintathu, kusobala ukuthi kwanelisa ithebula iqiniso elishiwo ngenhla.Ngokwengeziwe, ukuqubuka kwe-logic yesango kungabhalwa kusetshenziswa itafula leqiniso, isb.

Ngaphezu kwalokho, kubalulekile ukuqaphela ukuthi i-linye nesango noma inhlanganisela yama-2 namachweba awakwazi ukudala amasango ahlukile ane-logic.Kodwa-ke, namasango angasetshenziswa ukwenza amanye amasango anengqondo.Isibonelo, i-A nesango lingaguqulwa libe ngesango leNand lisebenzisa isango le-N0.Futhi amasango adlala indima ebalulekile ekwakheni amanye amasango anengqondo afana ne-xnor ne-xor.Kepha, uma i-Ana nesango lihlanganiswa nelinye isango elinengqondo, lingadala isango elisha le-logic, njengokuhlanganisa, noma, njll.

Usayizi we-IC 7408

Kusetshenziswa kuphi i-IC 7408

I-7408 IC, futhi ibizwa futhi njenge-IC 74LS08, inezinhlelo zokusebenza eziningi eziningi.Isetshenziswa ikakhulukazi ezimweni ezidinga kanye nemisebenzi enengqondo.I-chip iqukethe amachweba amane we-DNA, futhi kungenzeka ukusebenzisa eyodwa noma wonke la machweba ngasikhathi sinye.

I-chip iqashwa ezinhlelweni ezidinga ukushesha kwe-DNA.Njengoba kushiwo ngaphambili, amachweba ngaphakathi kwe-chip aklanyelwe ukusebenzisa ama-schottky diodes ukunciphisa ukubambezeleka ekushintsheni amachweba.Ngakho-ke, i-chip ilungele kahle ijubane eliphezulu nokusebenza.

Ngaphezu kwalokho, le chip ihlinzeka ngemiphumela ye-TTL edingwa izinhlelo ezithile.

Izicelo ze-IC 7408 zifaka

Amasango we-Digital Logic

Okudala kanambambili

Abaningi

Ophaca

Abashayeli bamabhasi / abamukeli

Amakheli ekheli

Amathathi wedatha

Imibuthano ye-Logic Gate

Ama-decoders

Amarejista we-Shift

Izinto zokubala

Imibuthako ye-Arithmetic

Ekuphetheni

I-Chip engu-7408 isetshenziswa kakhulu ekwakhiweni kwesifunda sedijithali kanye nemibuthano yokulawula enengqondo.Kwenza logic kanye nomsebenzi, ukuletha okuphezulu okuphezulu kuphela lapho zonke izibonakaliso zokufaka ziphezulu, isici esibalulekile emibuthanweni yedijithali.Ngaphezu kwalokho, ukusebenzisa ama-chips amaningi we-7408 avumela ukufezekiswa kwemisebenzi emincane eyinkimbinkimbi.

Kodwa-ke, lapho usebenzisa i-7408 chip, ukucatshangelwa okuthile kuyadingeka:

Uhla lwe-voltal lokufaka kufanele lube phakathi kwebanga elishiwo ku-datasheet ye-chip.Eqingqa leli banga kungaholela ekusebenzeni kahle noma kulimaze i-chip.

Umthamo wokulayisha wesiginali yokufaka kufanele ubhekwe.Uma idinga ukuxhunywa kwamanye amasekethe noma amasango we-logic, qinisekisa ukuhanjiswa kwesiginali ezinzile.

Ubudlelwano besikhathi sezimpawu zokufaka budinga ukucatshangelwa.Kweminye imiklamo, amasiginali wokufaka angaba nokulandelana kwesikhathi, okufanele kuxhunywe ngokunengqondo ngokuya ngezidingo zokwakhiwa.

Ukufingqa, i-7408 chip yi-Chip eyisisekelo ye-Chip enezimpawu ezine namasango.Kusetshenziswa kabanzi kumklamo wesifunda wedijithali kanye nemibuthano yokulawula enengqondo.Ukunakwa kufanele kukhokhwe kububanzi be-voltal bandla, ukulayisha umthamo, nobudlelwano besikhathi.