Utsalo lwangoku kunye nonkcenkceshelo lwangoku ziiparameters zokulinganisa amandla okuqhuba isekethe (Qaphela: ukutsala kunye nokunkcenkceshela zonke zezokuphela kwemveliso, ngoko ngumthamo womqhubi) iiparamitha. Le nkcazo isetyenziswa ngokubanzi kwiisekethe zedijithali.
Apha kufuneka siqale sichaze ukuba ukutsalwa kunye nokunkcenkceshela okwangoku kwi-chip manual yixabiso leparameter, engumda ophezulu we-terminal yokukhupha kunye nokunkcenkceshela okwangoku kwisekethe yokwenene (amaxabiso aphezulu avunyelweyo).
Ingcamango echazwe ngezantsi lixabiso langempela kwisekethe.
Ngenxa yokuba imveliso yeesekethe zedijithali iphezulu kuphela, iphantsi (0, 1), ixabiso lombane:
Xa imveliso yezinga eliphezulu ikhutshwa, imveliso inikezelwa ngokubanzi kumthwalo. Ixabiso langoku libizwa ngokuba yi "pull current";
Xa imveliso yezinga eliphantsi ngokubanzi ikhoyo ngoku ukufunxa umthwalo, ixabiso le-absorption current libizwa ngokuba "ukunkcenkceshela (ukungena) okwangoku".
Kwisixhobo songeniso lwangoku:
Umsinga ongenayo kunye ne-absorption yangoku igalelo. I-current is passive, kwaye umsinga wokufunxa uyasebenza.
Ukuba umsinga wangaphandle udlula kwiphini yetshiphu, 'ukuqukuqela' kwitshiphu kuthiwa ngumsinga wonkcenkceshelo (unkcenkceshelwa);
Ngokuchaseneyo, ukuba i-current yangaphakathi nge-chip pin kwi-chip 'ehambayo' ibizwa ngokuba yi-pull current (ikhutshelwa ngaphandle);
Kutheni ndinokulinganisa umthamo wokuqhuba? Ukunqumla kweendlela
Xa imveliso yocango olunengqiqo iphantsi, umsinga onkcenkceshelwa kumnyango we-logic ubizwa ngokuba ngumbane wokunkcenkceshela. Ubuninzi bokunkcenkceshela okwangoku, ukuphakama kwinqanaba eliphantsi lokuphela kwemveliso. Inokubonwa kwakhona kwigophe eliphumayo le-triode. Ubuninzi bokunkcenkceshela okwangoku, ubukhulu be-voltage egcweleyo, kunye nenqanaba eliphantsi. Nangona kunjalo, umgangatho ophantsi womnyango we-logic ulinganiselwe, kwaye unobuninzi be-UOLMAX. Xa usebenza kumnyango we-logic, akuvumelekanga ukudlula eli xabiso. Iinkcukacha zomnyango we-TTL logic zichaza i-UOLMAX ≤0.4 ～ 0.5V. Ngoko ke, kukho umda ophezulu wokunkcenkceshela okwangoku.
Xa isiphelo sesiphumo socango siphezulu, yangoku kwisiphelo sokuphuma kocango olunengqiqo iphuma kumnyango wengqiqo. Lo msinga ubizwa ngokuba yi-pull current. Inkulu idonsa yangoku, iphantsi kwinqanaba eliphezulu lokuphela kwemveliso. Oku kungenxa yokuba i-output -level triode inokumelana kwangaphakathi, kwaye ukuhla kwamandla ombane ekuchaseni kwangaphakathi kuya kunciphisa umbane wokuphuma. Inkulu idonsa yangoku, iphantsi kwinqanaba eliphezulu lokuphela kwemveliso. Nangona kunjalo, umgangatho ophezulu womnyango we-logic ulinganiselwe, kwaye unobuncinci be-UOHmin. Xa usebenza kumnyango we-logic, akuvumelekanga ukudlula eli xabiso. Iimpawu ze-TTL logic door door specifications uohmin ≥2.4V. Ngoko ke, kukho kwakhona umda ophezulu wokutsalwa kwangoku.
Ingabonwa ukuba kukho umda ophezulu kwi-draw current kunye nokunkcenkceshela okwangoku ekupheleni kokuphuma. Ngaphandle koko, xa imveliso yezinga eliphezulu, ukutsala kwangoku kuya kunciphisa inqanaba lemveliso kune-UOHMIN; xa imveliso yezinga eliphantsi, ukunkcenkceshela okwangoku kuya kwenza inqanaba lemveliso liphezulu kune-UOLMAX.
Ke ngoko, ukutsala kunye nokunkcenkceshela okwangoku kubonisa amandla okuqhuba imveliso. (Ixabiso elikhulu leparameter yangoku ye-chip kunye nokunkcenkceshela, oko kuthetha ukuba i-chip inokudibanisa imithwalo eninzi, kuba, njengombane wokunkcenkceshela ngumthwalo, umthwalo omninzi;
Ngenxa yokuba i-high-level input current incinci, kwinqanaba le-micro-level, ngokuqhelekileyo akukho mfuneko yokuyiqwalasela. Inqanaba eliphantsi langoku likhulu kwaye kwinqanaba le-milliamp.
Ngoko ke, akukho ngxaki ngokunkcenkceshela okukumgangatho ophantsi wangoku. Sebenzisa ifeni ukuchaza isakhono socango lwengqiqo ukuqhuba iingcango ezifanayo. Umtshini ophuma kwimfesane ngumlinganiselo wezinga eliphantsi eliphezulu lemveliso yangoku kunye neyona nto ikhoyo ngoku yezinga eliphantsi.
Kwisekethe edibeneyo, i-suction current, i-extra current output kunye nemveliso yangoku yokunkcenkceshela yingcamango ebaluleke kakhulu.
Tsala phezulu kwaye uvuze, imveliso esebenzayo yangoku, ivela kwimveliso yemveliso yangoku;
Ukunkcenkceshela kuyatshaja, igalelo elisebenzayo langoku, eliqukuqela lisuka kwizibuko lemveliso;
Ukuhlupheka kukuphefumla ngokusebenzayo, okuqukuqela ngaphakathi ukusuka kwizibuko lokufaka.
Umsinga wokufunxa kunye nonkcenkceshelo lwangoku luqukuqela kwitshiphu ukusuka kumjikelo wangaphandle wetshiphu. Umahluko kukuba i-absorption yangoku iyasebenza, kwaye i-absorption yangoku ihamba ukusuka ekupheleni kokufakwa kwe-chip. Umsinga wokuthululela u-passive, kwaye i-current flowing ukusuka ekupheleni kwemveliso ibizwa ngokuba yi-current.
Ukutsalwa kwangoku kukuphuma kwangoku okubonelelwa yimveliso yesekethe yedijithali kwinqanaba eliphezulu kumthwalo. Umgangatho ophantsi wemveliso xa ukunkcenkceshela kwangoku kuyigalelo langoku kwisekethe yedijithali. Ngokwenene zigalelo kunye nemveliso yezakhono zangoku.
I-absorption current yeye-terminal igalelo (input end input), kunye notsalo lwangoku (output end flowing out) kunye nonkcenkceshelo lwangoku (isiphelo semveliso siyankcenkceshelwa) sisiphumo esilinganayo.
Ixesha lokuposa: Jul-08-2023
