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circuitul integrat "misterios" MB104I4D WFW 883 cu 6 pini.


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Am o placa care are doua 2xMB104I4D. Am dat cautare pe net dar n-am gasit nici un datasheet. Pe placa sunt 7 microcontrollere ATMEL si pinii RX, TX sunt legati la aceste doua circuite care par a fi intre pinii de comunicatie seriala ai microcontrollerelor ( care au pinii RX comuni si TX comuni ) si portul serial de la calculator. Ma gandesc ca aceste circuite impreuna cu tranzistorii BD138, BC107A o dioda si cateva rezistente tin loc de circuitul MAX232 ce face conversia de nivele de tensiune din CMOS in +/-12 V pentru RS232. Vreau cine stie sa-mi spuna va rog mult ce-i cu aceste doua MB104I4D si daca aveti un datasheet pentru ele. Pe capsule este acel triunghi sigla "DVE" si m-ar interesa ce producator indica. Singura referire pe net despre acest circuit am gasit-o la http://www.forosdeelectronica.com/f13/s ... 9-a-19232/. :jytuiyu

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