{"id":9906,"date":"2026-07-06T14:23:58","date_gmt":"2026-07-06T14:23:58","guid":{"rendered":"https:\/\/materialparts.com\/adm3251earwz\/"},"modified":"2026-07-06T14:23:58","modified_gmt":"2026-07-06T14:23:58","slug":"adm3251earwz","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/adm3251earwz\/","title":{"rendered":"ADM3251EARWZ"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The ADM3251EARWZ is a 2.5kV fully isolated single-channel RS-232 transceiver from Analog Devices with integrated isoPower DC\/DC converter. Operating from a single 5V supply with only 5 external 0.1uF capacitors, it provides complete signal and power isolation for EIA-232E communication at up to 460kbps in a 20-lead wide-body SOIC package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n2500Vrms<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n460kbps<\/td>\n<\/tr>\n
Transmitters<\/td>\n1<\/td>\n<\/tr>\n
Receivers<\/td>\n1<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n4.5V to 5.5V (5V nominal)<\/td>\n<\/tr>\n
ESD Protection<\/td>\n+\/-8kV contact, +\/-15kV air gap<\/td>\n<\/tr>\n
Isolation Type<\/td>\niCoupler magnetic<\/td>\n<\/tr>\n
Common Mode Transient Immunity<\/td>\n>25kV\/us<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n20-lead SOIC (Wide)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 2.5kV full signal and power isolation<\/li>\n
  • Integrated isoPower isolated DC\/DC converter<\/li>\n
  • 460kbps data rate, EIA-232E compliant<\/li>\n
  • +\/-8kV contact, +\/-15kV air gap ESD on RS-232 pins<\/li>\n
  • Single 5V supply with 0.1uF charge pump caps<\/li>\n
  • High common mode transient immunity >25kV\/us<\/li>\n
  • UL and VDE safety approvals<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial communication isolation<\/li>\n
    • Medical equipment RS-232 links<\/li>\n
    • High-noise data communication<\/li>\n
    • Telecom diagnostic ports<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ADM3251EARWZ is a 2.5kV fully isolated single-channel RS-232 transceiver from Analog Devices with integrated isoPower DC\/DC converter. Operating from a single 5V supply with only 5 external 0.1uF capacitors, it provides complete signal and power isolation for EIA-232E communication at up to 460kbps in a 20-lead wide-body SOIC package. Key Specifications Isolation […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[1203],"chip_brand":[165],"class_list":["post-9906","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-adm3251earwz","chip_brand-adi"],"acf":{"brief_explanation":"2.5kV isolated RS-232 transceiver, 1Tx\/1Rx, 460kbps, isoPower, SOIC-20W","date_code":"","package_case":"20-lead SOIC Wide (13.0 x 7.6 x 2.35mm)","in_stock":6849,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/ADM3251E.pdf","price":"$7.42 @ 1ku","product_introduction":"The ADM3251EARWZ is a 2.5kV fully isolated single-channel RS-232 transceiver from Analog Devices with integrated isoPower DC\/DC converter. Using iCoupler magnetic isolation technology, it provides complete signal and power isolation without requiring an external isolated power supply. The device operates from a single 5V supply with only 5 external 0.1uF capacitors for the charge pump, and supports data rates up to 460kbps with +\/-15kV air gap ESD protection on RS-232 pins.","working_principle":"The ADM3251E combines dual-channel iCoupler digital isolators with an integrated isoPower isolated DC\/DC converter. The isoPower converter uses micro-transformers fabricated on the IC die to transfer power across the isolation barrier, generating the isolated 5V supply (VISO) needed for the RS-232 transceiver side. Signal isolation is achieved through additional micro-transformers that magnetically couple digital data across the isolation barrier. The charge pump voltage doubler\/inverter generates the +\/-10V RS-232 transmit levels from the 5V VISO supply.","pin_description":"
      Pin Group<\/th>Type<\/th>Function<\/th><\/tr>
      VCC, GND1<\/td>Power<\/td>Logic-side supply and ground<\/td><\/tr>
      TIN, ROUT<\/td>I\/O<\/td>Logic-side transmit input, receive output<\/td><\/tr>
      C1-C5<\/td>Cap<\/td>Charge pump capacitors (0.1uF)<\/td><\/tr>
      VISO, GND2<\/td>Power<\/td>Isolated-side supply and ground<\/td><\/tr>
      TOUT, RIN<\/td>I\/O<\/td>RS-232 transmit output, receive input<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial PLC RS-232 communication isolation<\/li>
      • Medical equipment isolated serial links<\/li>
      • Telecom diagnostic port isolation<\/li>
      • High-noise factory floor data communication<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ADI<\/td>ADM3252EARWZ<\/td>SOIC-20W<\/td>3-channel isolated RS-232<\/td><\/tr>
        TI<\/td>ISO1176DWR<\/td>SOIC-16W<\/td>Isolated RS-485 transceiver<\/td><\/tr>
        Silicon Labs<\/td>SI8402AB-B-IS<\/td>SOIC-16W<\/td>Isolated I2C, similar isolation<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9906","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=9906"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9906\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9906"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9906"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}