{"product_id":"waveshare-ttl-to-rs485-c-galvanic-isolated-converter","title":"Waveshare TTL to RS485 (C) Galvanic Isolated Converter- RS9903","description":"\u003ch2\u003e\u003cspan style=\"font-family: 'Roboto Slab'; color: #b80000;\"\u003eDescription:\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Waveshare TTL to RS485 (C) Galvanic Isolated Converter converts TTL signals to balanced RS485 for reliable long-distance communication, interface conversion, and node expansion. Ideal for industrial and embedded applications requiring isolation, surge protection, and signal stability.\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width: 1800px; height: auto;\" alt=\"TTL To RS485 (C) converter, multiple protections\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/TTL-TO-RS485-C\/TTL-TO-RS485-C-details-7.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Roboto Slab'; color: #b80000;\"\u003eSpecification:\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 99.9987%;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 20.6686%;\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"width: 78.8669%;\"\u003eGalvanic isolated TTL to RS485 converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth rowspan=\"2\" style=\"width: 20.6686%;\"\u003ePower supply interface\u003c\/th\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003e3.3V ~ 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003eovervoltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 20.6686%;\"\u003eDevice Port\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"width: 78.8669%;\"\u003eTTL\/RS485 standard compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth rowspan=\"2\" style=\"width: 20.6686%;\"\u003eTTL\u003c\/th\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eTransmission distance\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003eLess than 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eTransmission mode\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003epoint-to-point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth rowspan=\"4\" style=\"width: 20.6686%;\"\u003eRS485\u003c\/th\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003e200W lightningproof and surge-suppress, 6 kV ESD protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eTerminal resistor\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003e120R, enabled via soldering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eTransmission Distance\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003eAbout 1.2km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eTransmission Mode\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003epoint-to-multipoint (up to 32 nodes), it is recommended to use repeaters for 16 nodes or more.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 20.6686%;\"\u003eAppearance\u003c\/th\u003e\n\u003ctd style=\"width: 19.3994%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"width: 59.4674%;\"\u003e42.8 x 15.2 x 4.75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Roboto Slab'; color: #b80000;\"\u003eFeatures:\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with the TTL\/RS485 standard, converting the TTL signal into a differential RS485 signal, supports half-duplex communication\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.3V ~ 5V TTL signal level, provides over-voltage protection for the power supply interface\u003c\/li\u003e\n\u003cli\u003eOnboard unibody power supply isolation provides a stable isolated voltage and needs no extra power supply for the isolated terminal\u003c\/li\u003e\n\u003cli\u003eOnboard unibody digital isolation allows signal isolation, high reliability, strong anti-interference, and low power consumption\u003c\/li\u003e\n\u003cli\u003eOnboard TVS (Transient Voltage Suppressor) effectively suppresses surge voltage and transient spike voltage in the circuit, lightning-proof anti-electrostatic\u003c\/li\u003e\n\u003cli\u003eOnboard self-recovery fuses and protection diodes ensure the current\/voltage stable outputs, provide over-current\/over-voltage protection, and improve shock-proof performance\u003c\/li\u003e\n\u003cli\u003eOnboard RS485 output terminal 120R resistor, enabled via soldering\u003c\/li\u003e\n\u003cli\u003eBlack immersion gold process design, compact size, easy to integrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Roboto Slab'; color: #b80000;\"\u003eProduct Interface:\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg style=\"width: 1800px; height: auto;\" src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/TTL-TO-RS485-C\/TTL-TO-RS485-C-details-intro.jpg\" alt=\"TTL To RS485 (C) converter, interface introduction\"\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" style=\"width: 48.4079%;\"\u003eLeft side interface\u003c\/th\u003e\n\u003cth colspan=\"2\" style=\"width: 51.1275%;\"\u003eRight side interface\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth rowspan=\"2\" style=\"width: 5.8017%;\"\u003ePE\u003c\/th\u003e\n\u003ctd rowspan=\"2\" style=\"width: 42.6062%;\"\u003eRS485 signal ground\u003c\/td\u003e\n\u003cth style=\"width: 8.70255%;\"\u003eGND\u003c\/th\u003e\n\u003ctd style=\"width: 42.4249%;\"\u003eGround \/ TTL signal ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 8.70255%;\"\u003eRXD\u003c\/th\u003e\n\u003ctd style=\"width: 42.4249%;\"\u003eTTL receive data pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 5.8017%;\"\u003eB-\u003c\/th\u003e\n\u003ctd style=\"width: 42.6062%;\"\u003eRS485 differential signal B-\u003c\/td\u003e\n\u003cth style=\"width: 8.70255%;\"\u003eTXD\u003c\/th\u003e\n\u003ctd style=\"width: 42.4249%;\"\u003eTTL transmit data pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 5.8017%;\"\u003eA+\u003c\/th\u003e\n\u003ctd style=\"width: 42.6062%;\"\u003eRS485 differential signal A+\u003c\/td\u003e\n\u003cth style=\"width: 8.70255%;\"\u003eVCC\u003c\/th\u003e\n\u003ctd style=\"width: 42.4249%;\"\u003ePower Input\u003cbr\u003eDC 3.3V~5V power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Roboto Slab'; color: #b80000;\"\u003eUseful Link:\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"https:\/\/www.waveshare.com\/wiki\/TTL_TO_RS485_(C)\" style=\"color: rgb(43, 0, 255);\" rel=\"noopener\" target=\"_blank\"\u003eWaveshare TTL to RS485 (C) Isolated Converter\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Roboto Slab'; color: #b80000;\"\u003ePackage Included:\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e1 x \u003cspan data-d-streaming-word=\"\"\u003eWaveshare\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003eTTL\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003eto\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003eRS485\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003e(C)\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003eGalvanic\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003eIsolated\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan data-d-streaming-word=\"\"\u003eConverter\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Waveshare","offers":[{"title":"Default Title","offer_id":46886598869159,"sku":"RS9903","price":683.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0618\/9042\/9095\/files\/NewProject_92_41012935-8be0-4160-8632-8b1a79aa65c6.png?v=1793180384","url":"https:\/\/rees52.com\/products\/waveshare-ttl-to-rs485-c-galvanic-isolated-converter","provider":"REES52","version":"1.0","type":"link"}