{"id":11370,"date":"2026-07-26T06:01:15","date_gmt":"2026-07-26T06:01:15","guid":{"rendered":"https:\/\/ic-vendor.com\/ltc2870iufdtrpbf\/"},"modified":"2026-07-26T06:01:15","modified_gmt":"2026-07-26T06:01:15","slug":"ltc2870iufdtrpbf","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/ltc2870iufdtrpbf\/","title":{"rendered":"LTC2870IUFD#TRPBF"},"content":{"rendered":"

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

The Analog Devices LTC2870IUFD is a reconfigurable RS485\/RS232 multiprotocol transceiver. Supports both RS485 (half\/full duplex) and RS232 in a single IC, TSSOP-20 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Protocol<\/td>\nRS485 and RS232 (selectable)<\/td>\n<\/tr>\n
RS485 Data Rate<\/td>\nUp to 20 Mbps<\/td>\n<\/tr>\n
RS232 Data Rate<\/td>\nUp to 1 Mbps<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3.3V or 5V<\/td>\n<\/tr>\n
ESD Protection<\/td>\n+\/-15 kV HBM on bus pins<\/td>\n<\/tr>\n
Current (active)<\/td>\n~10 mA typ<\/td>\n<\/tr>\n
Current (shutdown)<\/td>\n~1 uA<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to +85C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTSSOP-20<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Dual-protocol RS485\/RS232 in one IC<\/li>\n
  • Software-selectable protocol<\/li>\n
  • 20 Mbps RS485, 1 Mbps RS232<\/li>\n
  • +\/-15 kV ESD on bus pins<\/li>\n
  • 3.3V or 5V supply<\/li>\n
  • 1 uA shutdown current<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial multiprotocol comm ports<\/li>\n
    • Legacy RS232 to RS485 adapter<\/li>\n
    • Building automation BACnet<\/li>\n
    • Point-of-sale communication<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Analog Devices LTC2870IUFD is a reconfigurable RS485\/RS232 multiprotocol transceiver. Supports both RS485 (half\/full duplex) and RS232 in a single IC, TSSOP-20 package. Key Specifications Protocol RS485 and RS232 (selectable) RS485 Data Rate Up to 20 Mbps RS232 Data Rate Up to 1 Mbps Supply Voltage 3.3V or 5V ESD Protection +\/-15 kV […]<\/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":[19,13],"tags":[2641],"chip_brand":[165],"class_list":["post-11370","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-ltc2870iufdtrpbf","chip_brand-adi"],"acf":{"brief_explanation":"RS485\/RS232 dual-protocol xcvr, 20Mbps\/1Mbps, TSSOP-20","date_code":"","package_case":"TSSOP-20 (6.5x4.4x1.0mm)","in_stock":3776,"datasheet":"https:\/\/www.analog.com\/en\/products\/ltc2870.html","price":"$5.00 @ 1ku","product_introduction":"The LTC2870IUFD from Analog Devices is a multiprotocol transceiver that supports both RS485 and RS232 in a single IC. Software-selectable mode eliminates the need for separate transceivers or external muxing. RS485 mode supports up to 20 Mbps for high-speed industrial links. RS232 mode supports up to 1 Mbps. +\/-15 kV ESD protection on bus pins ensures robust field operation.","working_principle":"An internal mux connects the driver and receiver to either the RS485 bus pins (A, B, Y, Z) or the RS232 bus pins depending on the MODE pin. In RS485 mode, the differential driver and receiver operate with standard 120-ohm bus termination. In RS232 mode, single-ended drivers and receivers operate with +\/-5.5V output levels. The 1uA shutdown mode powers down all circuitry for battery backup.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      MODE<\/td>Mode Select<\/td>RS485\/RS232 select<\/td><\/tr>
      D,I,R<\/td>Data I\/O<\/td>Driver\/Receiver<\/td><\/tr>
      A,B,Y,Z<\/td>RS485 Bus<\/td>Differential bus<\/td><\/tr><\/table>","application_scenarios":"
      • Multiprotocol comm port<\/li>
      • Industrial field bus<\/li>
      • BACnet MS\/TP<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11370","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=11370"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11370\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11370"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}