{"product_id":"max13487-ttl-rs485-autodirection-module","title":"MAX13487 TTL to RS485 AutoDirection Module - 5V","description":"\u003cdiv class=\"nznpd\"\u003e\n\u003cdiv class=\"nznpd__lead\"\u003e\n\u003cp class=\"nznpd__intro\"\u003eAdd a half-duplex RS485 interface to a 5V UART without using a separate direction-control pin. This TTL485 V2.0 board uses a MAX13487 transceiver to switch automatically between transmit and receive, with screw terminals, status LEDs and optional onboard termination.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__specs\"\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBoard marking\u003c\/span\u003e\u003cstrong\u003eTTL485 V2.0\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eTransceiver\u003c\/span\u003e\u003cstrong\u003eMAX13487\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eModule supply\u003c\/span\u003e\u003cstrong\u003e5V DC\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eTTL interface\u003c\/span\u003e\u003cstrong\u003eVCC, TXD, RXD, GND\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eRS485 interface\u003c\/span\u003e\u003cstrong\u003eD+\/A, D-\/B, GND\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBus mode\u003c\/span\u003e\u003cstrong\u003eTwo-wire half duplex\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eDirection control\u003c\/span\u003e\u003cstrong\u003eAutomatic\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eMaximum data rate\u003c\/span\u003e\u003cstrong\u003e500 kbps transceiver limit\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eReceiver loading\u003c\/span\u003e\u003cstrong\u003e1\/4 unit load, up to 128 nodes\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBus ESD protection\u003c\/span\u003e\u003cstrong\u003e±15 kV HBM at the transceiver\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eStatus LEDs\u003c\/span\u003e\u003cstrong\u003ePower, TXD and RXD\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eTermination\u003c\/span\u003e\u003cstrong\u003e120 ohm via 120_S bridge\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eDatasheets\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__ds\"\u003e\n\u003ca class=\"nznpd__dsbar\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/MAX13487-TTL-RS485-AutoDirection-Module-Datasheet-v1.pdf\" target=\"_blank\" rel=\"noopener\" aria-label=\"Download the MAX13487 TTL to RS485 AutoDirection module datasheet PDF\"\u003e\n\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cspan\u003eFull technical datasheet\u003c\/span\u003e\n\u003cspan class=\"nznpd__dsmeta\"\u003ePDF\u003csvg width=\"17\" height=\"17\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4\"\u003e\u003c\/path\u003e\u003cpolyline points=\"7 10 12 15 17 10\"\u003e\u003c\/polyline\u003e\u003cline x1=\"12\" y1=\"15\" x2=\"12\" y2=\"3\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eWhat's in the box\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__included\"\u003e\n\u003cdiv class=\"nznpd__qty\"\u003e1×\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMAX13487 TTL to RS485 AutoDirection module\u003c\/strong\u003e\u003cp\u003eRed TTL485 V2.0 PCB with fitted pin header and three-position screw terminal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eGreat for\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__uses\"\u003e\n\u003cdiv class=\"nznpd__use\"\u003eMicrocontroller-to-RS485 links\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eIndustrial sensors and controllers\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eMulti-drop serial networks\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eAutomation and HVAC projects\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003cdiv class=\"nznpd__qs\"\u003e\n\u003ch3\u003eWiring \u0026amp; getting started\u003c\/h3\u003e\n\u003col class=\"nznpd__steps\"\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect power with the circuit off\u003c\/strong\u003e\u003cp\u003eConnect a regulated 5V rail to VCC and join the controller and module grounds.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect the UART\u003c\/strong\u003e\u003cp\u003eConnect controller TX to TXD and controller RX to RXD. The module handles transmit and receive direction automatically.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect the RS485 bus\u003c\/strong\u003e\u003cp\u003eConnect D+\/A to the remote A or + terminal and D-\/B to the remote B or - terminal. Keep polarity consistent across the bus.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eSet termination only at a cable end\u003c\/strong\u003e\u003cp\u003eBridge 120_S only when this module is at a physical end of the RS485 cable. Leave it open at intermediate nodes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"NZN Electronics","offers":[{"title":"Default Title","offer_id":43162674266208,"sku":"MOD-MAX13487-RS485","price":3.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/max13487-rs485-autodirection-module-hero.png?v=1789895024","url":"https:\/\/www.nznelectronics.co.nz\/products\/max13487-ttl-rs485-autodirection-module","provider":"NZN Electronics","version":"1.0","type":"link"}