{"id":6761,"date":"2026-06-21T10:21:34","date_gmt":"2026-06-21T10:21:34","guid":{"rendered":"https:\/\/materialparts.com\/max3485esa\/"},"modified":"2026-06-21T10:21:34","modified_gmt":"2026-06-21T10:21:34","slug":"max3485esa","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/max3485esa\/","title":{"rendered":"MAX3485ESA+"},"content":{"rendered":"

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

The MAX3485ESA+ from Analog Devices (formerly Maxim Integrated) is a 3.3 V low-power RS-485\/RS-422 transceiver with half-duplex communication, data rates up to 10 Mbps, and \u00b115 kV ESD protection in an 8-pin SOIC package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nRS-485\/RS-422 Transceiver (Half-Duplex)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3.3 V<\/td>\n<\/tr>\n
\u6570\u636e\u901f\u7387<\/td>\nUp to 10 Mbps<\/td>\n<\/tr>\n
Common-Mode Voltage Range<\/td>\n-7 V to +12 V<\/td>\n<\/tr>\n
Driver Output Voltage<\/td>\n\u00b11.5 V min (54 Ohm load)<\/td>\n<\/tr>\n
Receiver Input Impedance<\/td>\n1\/4 Unit Load (96 kOhm min)<\/td>\n<\/tr>\n
ESD Protection<\/td>\n\u00b115 kV HBM on bus pins<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n1.2 mA (typical)<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\n1 nA (typical)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-8 (5.0 x 4.0 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to 85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 3.3 V single supply operation<\/li>\n
  • 10 Mbps data rate for high-speed communication<\/li>\n
  • Half-duplex operation with driver\/receiver enable<\/li>\n
  • \u00b115 kV ESD protection on bus pins<\/li>\n
  • 1\/4 unit load allows up to 128 devices on bus<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial automation and process control<\/li>\n
    • RS-485\/RS-422 network communication<\/li>\n
    • Building automation and HVAC systems<\/li>\n
    • Point-of-sale and security systems<\/li>\n
    • Telecom equipment and level translation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MAX3485ESA+ from Analog Devices (formerly Maxim Integrated) is a 3.3 V low-power RS-485\/RS-422 transceiver with half-duplex communication, data rates up to 10 Mbps, and \u00b115 kV ESD protection in an 8-pin SOIC package. Key Specifications Type RS-485\/RS-422 Transceiver (Half-Duplex) Supply Voltage 3.3 V Data Rate Up to 10 Mbps Common-Mode Voltage Range […]<\/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":[],"chip_brand":[165],"class_list":["post-6761","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-adi"],"acf":{"brief_explanation":"3.3V RS-485\/RS-422 Half-Duplex Transceiver, 10Mbps, \u00b115kV ESD, SOIC-8","date_code":"","package_case":"SOIC-8 (5.0 x 4.0 x 1.5 mm)","in_stock":12843,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/MAX3483-MAX3491.pdf","price":"$1.12 @ 1ku","product_introduction":"The MAX3485ESA+ from Analog Devices (formerly Maxim Integrated) is a 3.3 V low-power RS-485\/RS-422 transceiver designed for half-duplex communication on balanced transmission lines. It supports data rates up to 10 Mbps and features a 1\/4 unit load receiver input impedance that allows up to 128 transceivers on a single bus. The device includes driver and receiver enable pins for independent control. \u00b115 kV ESD protection on the bus pins provides robustness against electrostatic discharge events. The 1.2 mA quiescent current and 1 nA shutdown current make it suitable for power-sensitive applications. The device is pin-compatible with the industry-standard 75176 transceiver.","working_principle":"The MAX3485ESA+ consists of a differential line driver and a differential line receiver in a single package. The driver takes a single-ended TTL\/CMOS input on the DI pin and converts it to a differential output on the A and B bus pins. The driver is enabled by the DE (Driver Enable) pin. The receiver takes a differential input from the A and B bus pins and outputs a single-ended signal on the RO (Receiver Output) pin. The receiver is enabled by the RE (Receiver Enable, active low) pin. In half-duplex mode, DE and RE are typically tied together so the device alternates between transmit and receive modes. The differential signaling provides high noise immunity and allows communication over long cable runs (up to 1200 meters at lower data rates). The 1\/4 unit load input impedance (96 kOhm) minimizes bus loading, enabling more devices on the same network.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>RO<\/td>Output<\/td>Receiver output<\/td><\/tr>
      2<\/td>RE<\/td>Input<\/td>Receiver enable (active low)<\/td><\/tr>
      3<\/td>DE<\/td>Input<\/td>Driver enable (active high)<\/td><\/tr>
      4<\/td>DI<\/td>Input<\/td>Driver data input<\/td><\/tr>
      5<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      6<\/td>A<\/td>I\/O<\/td>Non-inverting bus pin<\/td><\/tr>
      7<\/td>B<\/td>I\/O<\/td>Inverting bus pin<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>3.3V power supply<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial Modbus and Profibus RS-485 networks<\/li>
      • Building automation BACnet MS\/TP communication<\/li>
      • DMX512 lighting control and stage equipment<\/li>
      • Security system multi-drop communication buses<\/li>
      • Point-of-sale terminal RS-485 serial links<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Analog Devices<\/td>MAX485ESA+<\/td>SOIC-8<\/td>5V version, 2.5Mbps<\/td><\/tr>
        Texas Instruments<\/td>SN65HVD08DR<\/td>SOIC-8<\/td>3.3V RS-485, 20Mbps<\/td><\/tr>
        onsemi<\/td>AM26LV31CDR<\/td>SOIC-8<\/td>RS-422 quad driver<\/td><\/tr>
        STMicroelectronics<\/td>ST3485EBDR<\/td>SOIC-8<\/td>3.3V RS-485, 18Mbps<\/td><\/tr>
        Renesas<\/td>ISL3179EIBZ<\/td>SOIC-8<\/td>3.3V RS-485, 30Mbps<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6761","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=6761"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6761\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6761"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}