{"id":6943,"date":"2026-06-22T03:04:49","date_gmt":"2026-06-22T03:04:49","guid":{"rendered":"https:\/\/materialparts.com\/ds2482s-100tr\/"},"modified":"2026-06-22T03:04:49","modified_gmt":"2026-06-22T03:04:49","slug":"ds2482s-100tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ds2482s-100tr\/","title":{"rendered":"DS2482S-100+T&R"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The DS2482S-100+T&R from Maxim Integrated (now Analog Devices) is a single-channel 1-Wire master I2C-to-1-Wire bridge with active pull-up and SOIC-8 package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nI2C to 1-Wire Bridge (1 Channel)<\/td>\n<\/tr>\n
1-Wire Channels<\/td>\n1<\/td>\n<\/tr>\n
Host Interface<\/td>\nI2C (up to 400kHz Fast Mode)<\/td>\n<\/tr>\n
1-Wire Data Rate<\/td>\nStandard (16.3kbps) and Overdrive (143kbps)<\/td>\n<\/tr>\n
Active Pull-up<\/td>\nYes (slew-rate controlled)<\/td>\n<\/tr>\n
1-Wire Pull-up Voltage<\/td>\n2.8V to 5.25V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.8V to 5.25V<\/td>\n<\/tr>\n
Operating Current<\/td>\n1.5 mA (typical, active)<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a<\/td>\n850 uA (typical)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (150 mil)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Single-channel I2C to 1-Wire protocol bridge<\/li>\n
  • Active pull-up for reliable 1-Wire communication<\/li>\n
  • Supports Standard and Overdrive 1-Wire speeds<\/li>\n
  • I2C interface up to 400kHz<\/li>\n
  • Programmable strong pull-up for EPROM programming<\/li>\n
  • Internal timers for precise 1-Wire timing<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • iButton reader interfaces<\/li>\n
    • 1-Wire sensor networks<\/li>\n
    • Embedded 1-Wire master<\/li>\n
    • Thermocouple and temperature sensor networks<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The DS2482S-100+T&R from Maxim Integrated (now Analog Devices) is a single-channel 1-Wire master I2C-to-1-Wire bridge with active pull-up and SOIC-8 package. Key Specifications Type I2C to 1-Wire Bridge (1 Channel) 1-Wire Channels 1 Host Interface I2C (up to 400kHz Fast Mode) 1-Wire Data Rate Standard (16.3kbps) and Overdrive (143kbps) Active Pull-up Yes (slew-rate […]<\/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":[],"chip_brand":[165],"class_list":["post-6943","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"1-Wire Master Bridge, I2C to 1-Wire, 1-CH, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.5 mm)","in_stock":5678,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/DS2482-100.pdf","price":"$2.80 @ 1ku","product_introduction":"The DS2482S-100+T&R from Maxim Integrated (now part of Analog Devices) is a single-channel I2C-to-1-Wire bridge that enables any I2C-capable host to communicate with 1-Wire slave devices. The device handles all 1-Wire signaling and timing requirements, including active pull-up for reliable communication with multiple 1-Wire devices on the bus. The active pull-up feature provides a controlled slew-rate pull-up that minimizes ringing on the 1-Wire line while providing sufficient current for fast rise times. The DS2482-100 supports both Standard (16.3kbps) and Overdrive (143kbps) 1-Wire communication speeds. The I2C interface supports up to 400kHz Fast Mode, making it compatible with most microcontroller I2C peripherals. The programmable strong pull-up can supply up to 20mA continuously for EPROM programming or parasite-powered temperature sensors. The internal timers ensure precise 1-Wire timing regardless of host I2C speed, eliminating the need for bit-banging 1-Wire protocols from firmware.","working_principle":"The DS2482S-100+T&R acts as a protocol translator between the I2C bus and the 1-Wire bus. When the host writes to the DS2482's I2C slave address (0x18, 0x19, or 0x1A depending on pin configuration), the device interprets the command and performs the corresponding 1-Wire operation. The 1-Wire Read\/Write command byte specifies whether a 1-Wire reset, 1-Wire write byte, or 1-Wire read byte operation should be performed. For a 1-Wire reset, the DS2482 pulls the 1-Wire line low for 480us (Standard speed) or 48us (Overdrive speed), then releases it and detects the presence pulse from slave devices. For a 1-Wire write operation, the DS2482 generates the appropriate time slots (pull low for 60-120us for write-0, or pull low briefly for write-1). The active pull-up circuit monitors the 1-Wire line voltage during the rising edge and applies a strong pull-up (low impedance to VPUP) when the voltage rises above a threshold, accelerating the RC charging of the 1-Wire bus capacitance. Once the voltage reaches VPUP, the active pull-up reverts to a passive pull-up resistor to avoid overshoot. This controlled approach eliminates the need for a low-value passive pull-up resistor that would waste power and still have slow rise times with large bus capacitance.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SCL<\/td>Input<\/td>I2C clock input<\/td><\/tr>
      2<\/td>SDA<\/td>I\/O<\/td>I2C data (open-drain)<\/td><\/tr>
      3<\/td>AD0<\/td>Input<\/td>I2C slave address bit 0<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>AD1<\/td>Input<\/td>I2C slave address bit 1<\/td><\/tr>
      6<\/td>IO<\/td>I\/O<\/td>1-Wire data line (open-drain)<\/td><\/tr>
      7<\/td>VPUP<\/td>Power<\/td>Active pull-up supply (2.8V-5.25V)<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (2.8V-5.25V)<\/td><\/tr><\/table>","application_scenarios":"
      • DS18B20 temperature sensor network with I2C host via DS2482-100 active pull-up for reliable multi-drop bus<\/li>
      • iButton reader with Overdrive speed (143kbps) for fast DS1990A serial number reading<\/li>
      • Embedded 1-Wire master on I2C-only MCU with strong pull-up for parasite-powered DS18B20 temperature conversion<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ADI\/Maxim<\/td>DS2482-800+<\/td>SOIC-16<\/td>8-channel version<\/td><\/tr>
        ADI\/Maxim<\/td>DS2480B<\/td>SOIC-8<\/td>Serial (UART) to 1-Wire bridge<\/td><\/tr>
        TI<\/td>DS2482S-100+<\/td>SOIC-8<\/td>Same device (TI distribution)<\/td><\/tr>
        Silicon Labs<\/td>CP2112<\/td>QFN-24<\/td>USB to I2C, no native 1-Wire<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6943"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6943\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6943"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6943"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}