{"id":8606,"date":"2026-06-29T06:56:36","date_gmt":"2026-06-29T06:56:36","guid":{"rendered":"https:\/\/materialparts.com\/max485ecsa\/"},"modified":"2026-06-29T06:56:36","modified_gmt":"2026-06-29T06:56:36","slug":"max485ecsa","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/max485ecsa\/","title":{"rendered":"MAX485ECSA+"},"content":{"rendered":"

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

The Maxim Integrated (now Analog Devices) MAX485ECSA+ is a low-power RS-485\/RS-422 transceiver with \u00b115 kV ESD protection, operating from a single 5 V supply. Packaged in an SOIC-8, it supports data rates up to 2.5 Mbps in half-duplex mode with slew-rate-unlimited outputs, and is designed for harsh-environment industrial communication networks.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n
Interface<\/td>\nRS-485 \/ RS-422<\/td>\n<\/tr>\n
\u6570\u636e\u901f\u7387<\/td>\n2.5 Mbps<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n4.75 V to 5.25 V<\/td>\n<\/tr>\n
ESD Protection<\/td>\n\u00b115 kV (HBM)<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n300 \u00b5A (typical)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-8<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • \u00b115 kV ESD protection on all bus pins<\/li>\n
  • 2.5 Mbps data rate (slew rate unlimited)<\/li>\n
  • Half-duplex operation with driver\/receiver enable<\/li>\n
  • Low quiescent current: 300 \u00b5A typical<\/li>\n
  • -7 V to +12 V common-mode input range<\/li>\n
  • Current limiting and thermal shutdown protection<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • RS-485 industrial communication networks<\/li>\n
    • RS-422 point-to-point links<\/li>\n
    • Level translators for EMI-sensitive environments<\/li>\n
    • Building automation and HVAC controls<\/li>\n
    • Programmable logic controller (PLC) interfaces<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Maxim Integrated (now Analog Devices) MAX485ECSA+ is a low-power RS-485\/RS-422 transceiver with \u00b115 kV ESD protection, operating from a single 5 V supply. Packaged in an SOIC-8, it supports data rates up to 2.5 Mbps in half-duplex mode with slew-rate-unlimited outputs, and is designed for harsh-environment industrial communication networks. Key Specifications Interface […]<\/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":[259],"class_list":["post-8606","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-maxim"],"acf":{"brief_explanation":"RS-485\/RS-422 transceiver, 2.5Mbps, \u00b115kV ESD, 5V, half-duplex, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 mm)","in_stock":14027,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/MAX1487E-MAX491E-MAX1487E.pdf","price":"$2.86 @ 1ku","product_introduction":"The MAX485ECSA+ from Maxim Integrated (now part of Analog Devices) is a low-power RS-485\/RS-422 transceiver with \u00b115 kV ESD protection on driver outputs and receiver inputs. Operating from a single 5 V supply, it supports data rates up to 2.5 Mbps in half-duplex configuration. The device features driver enable (DE) and receiver enable (\/RE) pins for flexible bus control, current limiting and thermal shutdown for driver overload protection, and a wide -7 V to +12 V common-mode input range for robust operation in noisy industrial environments.","working_principle":"The MAX485ECSA+ integrates a differential driver and a differential receiver on a single chip, sharing the bus pins (A and B) for half-duplex communication. The driver converts TTL\/CMOS logic levels at the DI input into differential signals on the A and B bus lines. The receiver converts differential signals from the bus back to single-ended logic at the RO output. The DE (driver enable) and \/RE (receiver enable) pins control the direction of data flow: when DE is high and \/RE is low, the device transmits; when DE is low and \/RE is low, the device receives. Both the driver and receiver enter high-impedance states when disabled, allowing multiple transceivers to share the same bus. The \u00b115 kV ESD protection is implemented through on-chip transient voltage suppression structures on all bus-facing pins.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>RO<\/td>Output<\/td>Receiver output<\/td><\/tr>\n
      2<\/td>\/RE<\/td>Input<\/td>Receiver enable (active low)<\/td><\/tr>\n
      3<\/td>DE<\/td>Input<\/td>Driver enable (active high)<\/td><\/tr>\n
      4<\/td>DI<\/td>Input<\/td>Driver data input<\/td><\/tr>\n
      5<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      6<\/td>A<\/td>I\/O<\/td>Non-inverting receiver input \/ driver output<\/td><\/tr>\n
      7<\/td>B<\/td>I\/O<\/td>Inverting receiver input \/ driver output<\/td><\/tr>\n
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (+5V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Modbus RTU communication over RS-485 in factory automation<\/li>\n
      • DMX512 lighting control protocol transceiver<\/li>\n
      • Building automation BACnet MS\/TP networks<\/li>\n
      • Solar inverter monitoring and control interfaces<\/li>\n
      • Point-to-point RS-422 serial links up to 1200m<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Speed<\/th>ESD<\/th>Notes<\/th><\/tr>\n
        TI<\/td>SN75176BDR<\/td>2.5 Mbps<\/td>\u00b18 kV<\/td>Pin-compatible, lower ESD<\/td><\/tr>\n
        Maxim<\/td>MAX3485ECSA+<\/td>10 Mbps<\/td>\u00b115 kV<\/td>3.3V version<\/td><\/tr>\n
        ADI<\/td>ADM485EARZ<\/td>2.5 Mbps<\/td>\u00b115 kV<\/td>Equivalent from ADI<\/td><\/tr>\n
        onsemi<\/td>NB6L14MNSTTG<\/td>250 Mbps<\/td>\u00b14 kV<\/td>High-speed LVDS alternative<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8606","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=8606"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8606\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=8606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=8606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=8606"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}