Ukuhlola i-74LS74: Ukuhlaziywa okuningiliziwe kwemisebenzi ye-PIN, izici, kanye nokusebenzisa amacala
2024-07-22 2016

Le khasi I-74LS74 Ingabe i-Dual D Flip-Flip-flop enezinhlelo zokusebenza ezahlukahlukene.Le ndatshana izokwethula ukucushwa kwe-PIN ne-74LS744, izici, izici, isakhiwo kanye nokusebenza komgomo, amapharamitha wezobuchwepheshe kanye nezicelo, ukuze ukwazi ukuqonda kangcono le flip d flip-flop.

Namabhuku

Yini i-D flip-flop?

I-D Flip-Flop iyithuluzi lememori yolwazi elinomsebenzi wememori kanye nezizwe ezimbili ezinzile zokugcina idatha ye-1-bit kanambambili.Yiyunithi ephelele eyisisekelo enobubanzi obukha amasekethe ahlukahlukene isikhathi, kepha futhi nomjikelezo obalulekile weyunithi emibukeni yedijithali.Ngakho-ke, i-D Flip-Flop inezicelo ezahlukahlukene ezinhlelweni zedijithali namakhompyutha.I-Flip-Flop inezindawo ezimbili ezizinzile, i.e. 0 no-1. Ngaphansi kwesenzo sezimpawu zangaphandle, ingahle ibhekane nesimo esithile esizinzile iye kwesinye.

I-D flip-flop (idatha ye-flip-flip noma ukubambezeleka yeflip-flop) iqukethe ama-4 nama-non-amasango, okuyi-G1 ne-G2 akha i-RS Flip-Flop eyisisekelo.Lapho i-master-slave flip-flop isebenza kwimodi ye-level-trigger, isiginali kumele ibekwe ngaphambi kokufika kokugxuma kwesiginali.Uma isikhangiso esiphazamisayo sikhona lapho okokufaka ngesikhathi se-CP ephezulu, isimo se-Flip-flop singaba yiphutha.Kodwa-ke, izimbangela ezinqenqemeni zivumela isiginali ukuthi ifake isekhondi ehlukaniswe ngaphambi kwe-CP Trigger Edge of Clock.Lokhu kunciphisa kakhulu isikhathi sokufaka okuphazamisekile, ngaleyo ndlela kunciphise amathuba okuphazanyiswa.I-Edge D Flip-Flop yaziwa nangokuthi umngcele wokuvinjwa okulondoloziwe d flip-flop.I-Edge D Flip-Flop ingenziwa ngokuxhuma ama-d flip-flops wochungechunge, kepha i-CP ye-D Flip-flop yokuqala idinga ukubulawa kusetshenziswa i-non-gate.

Ukubuka konke kwe-74LS74

I-74LS74 iyi-chip ye-Double d Flip-Flop eyenziwe nge-FairChild Semiconductor.Ingasetshenziswa njenge-oscillator, irejista, irejista ye-Shift, kanye ne-Frequency Division Counter.Inezici zokusebenzisa amandla aphansi, isilinganiso esiphakeme sokwenqatshwa komsindo kanye nobubanzi obubanzi be-voltage.Idivaysi ngayinye iqukethe amabhlogo wesifunda afanayo, aphezulu anqenqema.

Ukushintshwa nokulingana

• CD74Act74

• Hef40312B

• I-MC74F744

• I-SN74ALS74

• I-74HCT74

• I-74LVCC2G80

Ukucushwa kwe-PIN nemisebenzi ye-74LS74

I-74LS74 inezikhonkwane eziyi-16 namagama abo nemisebenzi imi ngalendlela elandelayo.

I-PIN 1 (1Clr (Bar)): Setha kabusha i-Flip Flop ngokusula inkumbulo yayo

I-PIN 2 (1D): I-Pin Pin ye-Flip Flop

I-PIN 3 (1Clk): Lezi zikhonkwane kufanele zinikezwe nge-Clock Pullop ye-Flip Flop.

I-PIN 4 (1PRE (ibha)): Enye iphinikhodi yokufaka yeflip flop

I-PIN 5 (1Q): Ukukhishwa kwe-PIN ye-Flip Flop

I-PIN 6 (1Q '(Bar)): I-PIN ekhishwayo ye-Flip Flop

I-PIN 7 (VSS): Ixhunywe emhlabathini wohlelo

I-PIN 8 (2Q '(Bar)): I-PIN ekhishwayo ekhishwayo ye-Flip Flop

I-PIN 9 (2Q): Ukukhishwa kwe-PIN ye-Flip Flop

I-PIN 10 (2PRE (Bar)): Enye iphinikhodi yokufaka yeflip flop

I-PIN 11 (2CLK): Lezi zikhonkwane kufanele zinikezwe nge-Clock Pullose ye-Flip Flop.

I-PIN 12 (2D): I-PIN yokufaka ye-Flip Flop

I-PIN 13 (2clr (Bar)): Setha kabusha i-Flip Flop ngokusula inkumbulo yayo

I-PIN 14 (VDD / VCC): Amandla i-IC ngokuvamile nge-5V

Yiziphi izici ze-74LS74?

• Inqubo yokwenza kusebenze iqondile, futhi ijubane lempendulo yalo lishesha.

• Ikwamukela ukucushwa kwephakeji ye-Dual d flip-flip-flip.

• Inani eliphansi le-Module eliphakeme le-Voltage Voltage Verts lingama-volts amabili.

• I-74LS74 idinga i-voltage eqinile yokunikeza amandla ukuze isebenze kahle futhi inezidingo eziphakeme zokuphathwa kwamandla.

Ukwakheka nokusebenza komgomo we-74LS744

I-74LS74 Flip-Flip-Flip-Flip-Flip-Flip ifakwe nge-DAIP ye-D Flip-Flops, ngalinye libonisa ama-terminals amabili wokufaka (D kanye newashi) kanye nama-terminals amabili okukhipha (Q kanye / q).Lezi drip-flops zisebenza nge-trigger enhle, okusho ukuthi idatha ivusenelisiwe ngesikhathi sokunyuka kwesiginali yewashi.

Lapho umphetho okhuphukayo wewashi ufika, inani lesiginali yokufaka i-D lizogcinwa ngaphakathi kwesango lokuhambisa lesango le-D flip-flop.Lapho umphetho okhuphukayo wewashi ufika, inani eligcinwe ngaphakathi kwe-D Flip-Flop lizovuselelwa ngokuya ngohlobo lweflip-flop, kanye nenani elivuselelwe lizokhipha ama-terminals Q kanye / q.

Amapharamitha wezobuchwepheshe we-74LS74

Lesi sithombe esingezansi yimingcele yezobuchwepheshe ye-SN74LS74AN.

Yini ukusetshenziswa kwe-74LS74?

Yini ukusetshenziswa kwe-74LS74?

• Ukukhiya Idivayisi

• I-Clock Divider

• umjikelezo we-snibber

• I-Pulse generator

• Idivayisi yokurejista ye-Shift

• Ukuthambisa indlela yokufaka

• Umjikelezo we-FSK modulant

I-4LS74 Circuit yesicelo ejwayelekile

Lesi sithombe esingenhla siyisijikelezo sokulawula kude sakhiwa ngo-74LS74.Ukuhlinzekwa kwamandla kwalesi sifunda kusebenzisa i-capacitor Step-Down Half-wave umjikelezo.Ukuphepha kudinga ukunakwa lapho kwenza lo mklamo.Imvamisa, ngoba ibhodi yesekethe linamandla angama-220V mains, kufanele siqinisekise ukusebenza okulungile.Sivimba ipulaki Power yesethi yendlu edinga ukulawulwa okukude kwi-Pocket Socket CZ, bese siqala ukuyisebenzisa.Ukhiye ngamunye ku-Remote Control Transmitter unekhodi ehlukile yokuhambisa, okuholela emiphumeleni ehlukile lapho usebenzisa ukhiye ngamunye.Ngaphezu kwalokho, inqubo yezinkinobho kanye nendlela yokusebenza nayo izothinta ukulawulwa.

Imibuzo Ebuzwa Njalo [I-FAQ]

1. Yini i-7474 IC?

I-7474 iyithuluzi elisezingeni eliseceleni.Ukukhishwa kwe-Q kuzoshintsha kuphela onqenqemeni lwe-trigger pulse.Unxantathu omncane ku-Clock (CP) okokufaka kophawu kukhombisa ukuthi idivaysi inethuba elihle.

2. Kwenzekani i-74LS74?

I-IC 74LS74 isigaba se-Double D Esinqenqemeni Esisisekelo se-Flip Flops esihlanganisa ama-terminals aphezulu okuphuma kanye nokuhambisa.Inamandla okugcina idatha ngesimo sezinombolo kanambambili futhi iza nezici ezigciniwe idatha ingashintshwa lapho kudingeka.

3. Ungayisebenzisa kanjani i-74LS74?

Ukusebenza kwe-flip-flop kuqondile.Amandla i-IC usebenzisa izikhonkwane ze-VCC ne-GND.Njengoba kushiwo ngaphambili, i-flip-flop ngayinye isebenza ngokuzimela.Xhuma amasiginali wokufaka ezihlotsheni 2 no-3 ukuze uhlanganyele ne-Flip-Flip yokuqala, ngokuphuma okuboniswe kwizikhonkwane 5 no-6.

4. Umbuthano usho ukuthini ku-74LS74?

Unxantathu ukhombisa ukuthi isinali yewashi liyisiginali ebangela umngcele.Umbuthano ukhombisa ukuthi isiginali isebenza kancane (ie., I-inverted).I-74LS74 inewashi le-trigger elisezingeni eliphezulu (eliphansi liye phezulu).

5. Umsebenzi we-DIP D-FLOP usebenza kanjani?

I-d flip-flop ithumba inani lokufaka kwe-D-okokufaka engxenyeni eqondile yomjikelezo wewashi (njengamaphethelo wewashi).Lelo value elithwetshiwe liba ngumphumela we-q.Ngezinye izikhathi, okuphumayo Q akushintshi.I-d flip-flop ingabukwa njengesitokisi sememori, isimangalo se-sero-oda, noma umugqa wokulibala.