Umhlahlandlela wakho ku-74LS02
2024-11-29 681

I-74LS02 iyi-IC eguquguqukayo evela ochungechungeni lwe-74xxyy, enezinto ezine okufakwayo noma amasango (Quadruple okokufaka okubili noma isango).Kufaka ama-schottry ama-schottky aphansi ngokusebenza kahle ngokuncishiswa kwamandla, ukuqinisekisa ukushintshwa okusheshayo nokubambezeleka okuncane.Kusetshenziswe kabanzi ku-Digital Electronics, i-74LS02 ihlanganisa ubunjiniyela obuthuthukisiwe, okwenza kube kuhle ngohlobo lwezicelo.

Namabhuku

Ukucushwa kwe-PIN ye-74LS02

Inombolo ye-PIN	Ukufanisa
Noma isango 1
2	1a - Ukufaka1 kwesango 1
+	I-1B - I-IPS2 yesango 1
1	1y - Umphumela wesango 1
Noma isango 2
Okuthengwa edolo	2a - okokufaka1 kwesango 2
6	2b - Ukufaka2 kwesango 2
4	I-2Y - Ukukhishwa kwesango 2
Noma isango 3
8	3a - Ukufakwa1 kwesango 3
9	I-3B - Ukufaka2 kwesango 3
Okuthenyalwayo	3Y - Ukukhishwa kwesango 3
Noma isango 4
Uhlamvu lweshumi eliphansi	4a - ukufaka1 kwesango 4
Okuqophele	I-4b - Ukufaka2 kwesango 4
13	4Y - Umphumela wesango 4
Ama-terminals abiwe
Okuthengwa kwava +	I-GND - exhunywe emhlabathini
14	I-VCC - exhunywe ku-voltage enhle ukuhlinzeka amandla kuwo wonke amasango amane

Le khasi 74ls02 yi-IC-PIN IC, njengoba kuboniswe emjondolo wePilout.Iyatholakala kumaphakeji ahlukahlukene, ivumela ukukhetha ngokuya ngezidingo ezithile.Umsebenzi we-PIN ngayinye uchazwe ngezansi.

Ukucaciswa kobuchwepheshe kanye nezimpawu

Ukusebenza kwamandla kagesi namandla

Isifunda esihlanganisiwe, enohla lwe-voltage voltage phakathi kuka- +4.75 no-5.25v kanye nomkhawulo ophephile we-7V, uqinisekisa ukusebenza kahle.Ixhasa ukuphuma okuphezulu kwamanje kwe-8MA ngesango ngakunye, ivumelanisa ngaphandle komthungo ngemiphumela ejwayelekile ye-TTL ukusekela izinhlelo zokusebenza zedijithali eziguquguqukayo.Idivayisi ikhombisa ukwakheka okulinganisa ngokucabanga okulinganiselwe ukusetshenziswa kwamandla okuncane, okugcizelela indlela yokucabanga phambili ekulondolozeni amandla ekwakheni kwe-elekthronikhi yesimanje.

Ukuqina nokuphathwa okushisayo

Iyakwazi ukubekezelela ukukhipha i-elektrokati kuze kufike ku-3.5kV, le ekhombisa ukuthembeka ngisho nangaphansi kwezimo ezahlukahlukene, kufaka phakathi izindawo ezithambekele ekukhipheni kwe-state.Ngokukhuphuka nokuwa kwesikhathi esiseduze kwe-15ns, kuthembisa ukucubungula kwesiginali okusheshayo, ukuhlalisa amazinga okusebenza kanzima afunwa yimibuthano yanamuhla.Njengoba enolwazi kuzinhlelo zokusebenza, le nkinga yokusebenza esheshayo ayigcini ngokudla ngejubane kuphela kodwa futhi nokuhlanganiswa nezinhlelo eziyinkimbinkimbi lapho ukucaciswa kwesikhathi kuphethe khona inani.

Ukushisa kanye namapharamitha wokugcina

Isebenza ngokusebenza okusebenzayo kuwo wonke amazinga okushisa kusuka ku-0 ° C kuye ku-70 ° C, i-IC ifanela izicelo eziningi ezijwayelekile.Kuyabekezelela kwisitoreji, kukhuthazelela ukusuka ku-65 ° C kuya ku-150 ° C, kuhlomula lezo zimo lapho izakhi zibhekana nezimo zezulu ezinzima ngesikhathi sokuhamba nokugcina.Ukuqina kwalo ezimeni ezahlukahlukene kuyaqinisekiswa ngokusebenzisa okuhlangenwe nakho ngaphakathi kwama-elekthronikhi abathengi.

Okufanayo ka-74ls02

• SN54LS02

• IC 7402

• HCF40777

74ls02 noma isango

Ukuxhumeka kwangaphakathi kwama-4 namasango ngaphakathi kwe-chip kuboniswe ngezansi.

Ngamunye noma isango lale chip lenza noma ukusebenza kokufakwa okunengqondo okubili.I-A noma isango lihlanganisa ukusebenza kwesango elilandelwa yisango, elivezwe njenge:

Futhi = noma + hhayi

Ithebula leqiniso le-noma isango limi ngalendlela elandelayo:

Faka11	Faka2	Noma umphumela	Noma ukuphuma
-Ehlile	-Ehlile	-Ehlile	-Phezulu
-Phezulu	-Ehlile	-Phezulu	-Ehlile
-Ehlile	-Phezulu	-Phezulu	-Ehlile
-Phezulu	-Phezulu	-Phezulu	-Ehlile

Ukukhombisa ithebula leqiniso ngenhla, alula noma isango lixhumekile njengoba kukhonjisiwe kumdwebo ongezansi.

Kulesifunda, ama-trafistors amabili alungiselelwe ukwakha noma isango.Okufakwayo okubili kuxhunyiwe ezisekelweni ze-transistors, nezinkinobho ezisetshenziselwa ukulawula i-logic yokufaka.Ukukhishwa kuthathwe kumqokeleli owabelwana ngawo womabili ama-transistors futhi axhunywe kwi-LED ngokusebenzisa umkhawulo wamanje okhawula.I-LED ikhombisa isimo sokuphuma, ngenkathi izinkinobho zivumela ukuhambisa i-logic yokufaka.

Noma amasango

• Lapho zombili izinkinobho zingacindezelwa

Kulesi simo, akukho ukugeleza kwamanje ngokusebenzisa izisekelo ze-transtors Q1 ne-Q2, zigcina zombili ama-transistors.Ngenxa yalokho, i-Full Supply Vertage V_Cc kuvela kuwo wonke ama-transistors.Kusukela ukuphuma Y₁ Ihambelana namandla kagesi ngaphesheya kwe-Q1 noma i-Q2, izophakama.Ngakho-ke, lapho okokufaka = okuphansi, okuphumayo = ukuphakama.

• Lapho inkinobho eyodwa icindezelwa

Ukucindezela inkinobho eyodwa kuvula i-transistor ehambisanayo lapho enye ihlala icishiwe.I-transistor isebenza njengesifunda esifushane, ngaphezulu kwe-transistor.Lokhu kuphumela ku-zero voltage kuwo wonke ama-transistors, okwenza Y₁ Ephansi.Ngakho-ke, lapho okufakwayo okukodwa = okuphezulu, okuphumayo = okuphansi.

• Lapho izinkinobho zombili zicindezelwa

Ngazo zombili izinkinobho ezicindezelwe, zombili izingqimba zivuliwe, futhi i-voltage ibheke ku-zero.Ngenxa yalokho, Y₁ iphansi.Ngakho-ke, lapho bobabili okokufaka = okuphezulu, okukhishwayo = okuphansi

Ngokuqinisekisa lezi zifundazwe ezintathu, kuyacaca ukuthi isifunda sanelisa ithebula leqiniso ngakuso noma isango.Ukukhishwa okulingana kwesango yile:

Isango ngasinye ku-chip lingasetshenziswa ngokufanayo, ngokuya ngezidingo ezithile.

Izicelo ze-74LS02

Ukuqaliswa okuguquguqukayo noma okunengqondo

I-74LS02 IC iyingxenye yokwakha amasango noma ama-logic, ukukhonza njengesisekelo semisebenzi ehlukahlukene ebonakalayo.Ukuguquguquka kwayo kunika amandla ukuhlanganiswa kwimibuthano ehlukahlukene yedijithali, ukuhlinzeka ngezixazululo ezingezenzeki ezisebenzisekayo zemiklamo ye-logic eyinkimbinkimbi.Kuyo yonke le minyaka, siye saqaphela ukuthi lezi zi-ICS zingalungisa isikhala futhi zinciphise ukusetshenziswa kwamandla, ukusheshisa izinqubo zokuthuthuka.Ngaphesheya kwezinzuzo zobuchwepheshe, umuzwa wokufeza kanye nobuhlakani obuzwakala ngathi lapho kubonakala sengathi lezi zingxenye zibonisa ukutshalwa kwezimali nokweneliseka ngokwenza amasistimu afanele.

Iqhaza ku-Digital Electronics

Ku-Digital Electronics, i-IC 74LS02 ifakazele ukuthi iyadingeka.Lapho kuhlanganiswe namanye ama-ICS enengqondo, kwakha umgogodla wezinhlelo eziyinkimbinkimbi zedijithali.Lo hlobo lobunjiniyela bedijithali bukhombisa ukuthi lezi zinhlelo zilethela kanjani ukuqina nokuthembeka, okufaka isandla ekuweni kwamanani wokuhluleka ngaphakathi kwe-elekthronikhi yabathengi.Ukusiza okuhlangenwe nakho lapho amaphrojekthi ahlangabezana namabhentshi awo athembekile ayabonakala, egcizelela ukuzuzisa okungokomzwelo okungokomzwelo kudlala imizamo yedijithali.

Ukuthuthukisa ama-arithmetic logic amayunithi (alos)

Ukuhlanganiswa kwe-74LS02 ICS ngaphakathi kwamayunithi we-arithmetic logic (alos) kukhombisa ukusetshenziswa kwawo ekuqedeni imisebenzi yokuhlanganisa.Njengoba u-Alus asemqoka kuma-processors, esebenzisa imisebenzi yezibalo i-power software, ukuguqulwa kanye nokuhlanganiswa kwalezi zi-ICS kukhombisile amandla okuthuthukisa ijubane lokucubungula ngenkathi kugcina kunembe.Lokhu kugqugquzela umuzwa wokuziqhenya phakathi kwethu abafakaza imiklamo yabo ecindezela imingcele yokusebenza kwekhompyutha, ehlanganisa ubuchwepheshe acumen ngokwaneliseka okungokomzwelo.

Iseva esebenza kahle kanye nokucutshungulwa kwedatha

Ku-Server Ecosystems, i-74LS02 isiza ukwakha amasekethe aphatha kahle ukugeleza kwedatha.Amakhono awo noma amakhono anengqondo asezikhungweni zedatha lapho kudingeka khona ubuqotho bemininingwane efanayo.Okuhlangenwe nakho kobungcweti Qokomisa ukuthi le microsod liqhakambisa kanjani ukusebenza okungenamthungo nakuphazamiseka, ukufeza okulindelwe kwengqalasizinda yengqalasizinda yanamuhla.Ukuphendula okungokomzwelo ekufezekiseni amabhentshi aphezulu abonakala ngokuzethemba, ukushayela ubuhle obuqhubekayo enkundleni.

Ukuthuthuka kokusebenza kwe-Memory Units '

Amayunithi wememori athola izinzuzo ezinkulu ngokufaka i-74LS02 ICS ukuze ufunde ukufunda nokubhala imisebenzi.Amasango anengqondo ngaphakathi kwalemibuthano aphatha imisebenzi eyinkimbinkimbi yokugcina idatha ngomzamo omncane.Ngokulunga amasango la masango, singathuthukisa isikhathi eside kanye nedatha yokugcwala kwamamojula wenkumbulo, ukuvumelanisa nenqubekela phambili yamanje kubuchwepheshe bememori.Kanye nezimpumelelo zobuchwepheshe, ukwaneliseka ekuthuthukiseni amakhono ememori kuwubuyiseli ekuzibandakanyeni ngokomzwelo kanye nokutshalwa kwemali komuntu enqubekela phambili yezobuchwepheshe.

Ukuqinisa Izingosi Nezinhlelo Zedijithali

Iqhaza le-74LS02 IC ezindaweni zokuxhumana lifinyelela ekuphathweni kwephakethe ledatha kanye nomzila.Amaphrothokholi wokuxhumana ancike kule z ecs ukusekela isakhiwo senethiwekhi enengqondo.Ukuqalisa ukuqinisekisa ukuthi kuhlanganisa le ndlela yokuqina kwenethiwekhi nokusebenza kwenethiwekhi, kokuthumela okuvezayo.Lokhu kugxuma ukuxazulula nokwaneliseka kwethu njengoba bebheka izinselelo zokugcina ingqalasizinda yokuxhumana eqinile.

Ubukhulu be-74LS02