{"id":5232,"date":"2026-06-09T10:37:20","date_gmt":"2026-06-09T10:37:20","guid":{"rendered":"https:\/\/materialparts.com\/st3485ebdr\/"},"modified":"2026-06-09T10:37:20","modified_gmt":"2026-06-09T10:37:20","slug":"st3485ebdr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/st3485ebdr\/","title":{"rendered":"ST3485EBDR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

ST3485EBDR from ST is a 3.3V RS-485\/RS-422 transceiver supporting data rates up to 16Mbps. 1\/4 unit load (128 nodes). Low EMI. SOIC-8. Extended ESD protection.<\/p>\n

\u5de5\u4f5c\u539f\u7406<\/h2>\n

Differential driver converts TX to A\/B bus signals. Receiver converts bus to RX. DE\/RE control driver\/receiver enable. 1\/4 unit load allows up to 128 nodes on bus. 3.3V single supply with 5V tolerant I\/O.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u9488\u811a<\/th>\n\u540d\u79f0<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n
1<\/td>\nRO<\/td>\nReceiver output<\/td>\n<\/tr>\n
2<\/td>\nRE<\/td>\nRx enable<\/td>\n<\/tr>\n
3<\/td>\n\u53ef\u9009\u62e9\u4e22\u5f03<\/td>\nDriver enable<\/td>\n<\/tr>\n
4<\/td>\nDI<\/td>\nDriver input<\/td>\n<\/tr>\n
5<\/td>\n\u63a5\u5730<\/td>\n\u5730\u9762<\/td>\n<\/tr>\n
6<\/td>\nA<\/td>\nNon-inverting bus<\/td>\n<\/tr>\n
7<\/td>\nB<\/td>\nInverting bus<\/td>\n<\/tr>\n
8<\/td>\nVCC<\/td>\n3.3V supply<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • High-speed RS-485 communication<\/li>\n
  • Industrial network backbones<\/li>\n
  • Profibus and Modbus at high speed<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n\n
    \u5236\u9020\u5546<\/th>\n\u90e8\u4ef6\u7f16\u53f7<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    ST<\/td>\nST3485ECDR<\/td>\nTSSOP-8 version<\/td>\n<\/tr>\n
    TI<\/td>\nSN65HVD1782DR<\/td>\nSimilar RS-485<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview ST3485EBDR from ST is a 3.3V RS-485\/RS-422 transceiver supporting data rates up to 16Mbps. 1\/4 unit load (128 nodes). Low EMI. SOIC-8. Extended ESD protection. Working Principle Differential driver converts TX to A\/B bus signals. Receiver converts bus to RX. DE\/RE control driver\/receiver enable. 1\/4 unit load allows up to 128 nodes on […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[142],"class_list":["post-5232","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-st"],"acf":{"brief_explanation":"RS-485 transceiver, 3.3V, 16Mbps, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.5mm, 1.27mm pitch)","in_stock":13004,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/st3485eb.pdf","price":"$0.80 @ 1ku","product_introduction":"ST3485EBDR from ST is a 3.3V RS-485\/RS-422 transceiver supporting data rates up to 16Mbps. 1\/4 unit load (128 nodes). Low EMI. SOIC-8. Extended ESD protection.","working_principle":"Differential driver converts TX to A\/B bus signals. Receiver converts bus to RX. DE\/RE control driver\/receiver enable. 1\/4 unit load allows up to 128 nodes on bus. 3.3V single supply with 5V tolerant I\/O.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>RO<\/td>Receiver output<\/td><\/tr>
    2<\/td>RE<\/td>Rx enable<\/td><\/tr>
    3<\/td>DE<\/td>Driver enable<\/td><\/tr>
    4<\/td>DI<\/td>Driver input<\/td><\/tr>
    5<\/td>GND<\/td>Ground<\/td><\/tr>
    6<\/td>A<\/td>Non-inverting bus<\/td><\/tr>
    7<\/td>B<\/td>Inverting bus<\/td><\/tr>
    8<\/td>VCC<\/td>3.3V supply<\/td><\/tr><\/table>","application_scenarios":"
    • High-speed RS-485 communication<\/li>
    • Industrial network backbones<\/li>
    • Profibus and Modbus at high speed<\/li><\/ul>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
      ST<\/td>ST3485ECDR<\/td>TSSOP-8 version<\/td><\/tr>
      TI<\/td>SN65HVD1782DR<\/td>Similar RS-485<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5232"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5232\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5232"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}