{"id":3195,"date":"2026-05-31T03:20:34","date_gmt":"2026-05-31T03:20:34","guid":{"rendered":"https:\/\/materialparts.com\/si8642bd-b-is\/"},"modified":"2026-06-06T03:29:05","modified_gmt":"2026-06-06T03:29:05","slug":"si8642bd-b-is","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/si8642bd-b-is\/","title":{"rendered":"SI8642BD-B-IS"},"content":{"rendered":"

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

The SI8642BD-B-IS from Skyworks Solutions is a low-power quad-channel digital isolator with 2 forward and 2 reverse channels. It provides 5000 V rms isolation using capacitive coupling technology, supports data rates up to 150 Mbps, and features propagation delays under 10 ns. The device operates from 2.5 V to 5.5 V in a 16-lead wide-body SOIC 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
\u0639\u062f\u062f \u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n4 (2 forward, 2 reverse)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n5000 V rms<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\nUp to 150 Mbps<\/td>\n<\/tr>\n
\u062a\u0623\u062e\u064a\u0631 \u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631<\/td>\n8 ns typical, 13 ns max<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.5 V to 5.5 V<\/td>\n<\/tr>\n
CMTI<\/td>\n>35 kV\/us<\/td>\n<\/tr>\n
Channel Configuration<\/td>\nUnidirectional per channel<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C to 125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low power consumption with Schmitt trigger inputs<\/li>\n
  • 5000 V rms isolation rating (reinforced insulation)<\/li>\n
  • 150 Mbps data rate with sub-10 ns typical propagation delay<\/li>\n
  • 2 forward \/ 2 reverse channel configuration<\/li>\n
  • High common-mode transient immunity: >35 kV\/us<\/li>\n
  • UL, CSA, VDE, and CQC safety certifications<\/li>\n
  • Enable inputs for output driver control<\/li>\n
  • Selectable fail-safe output state during power loss<\/td>\n<\/tr>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial communication interfaces (SPI, UART, I2C isolation)<\/li>\n
    • Motor drive and inverter control signal isolation<\/li>\n
    • Medical equipment galvanic isolation<\/li>\n
    • Power supply feedback loop isolation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SI8642BD-B-IS from Skyworks Solutions is a low-power quad-channel digital isolator with 2 forward and 2 reverse channels. It provides 5000 V rms isolation using capacitive coupling technology, supports data rates up to 150 Mbps, and features propagation delays under 10 ns. The device operates from 2.5 V to 5.5 V in a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[183],"class_list":["post-3195","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-skyworks"],"acf":{"brief_explanation":"Quad-channel digital isolator, 2F\/2R, 5000 V rms, 150 Mbps, 8 ns prop delay, SOIC-16W","date_code":"","package_case":"SOIC-16 Wide (10.3 x 7.5 mm)","in_stock":9688,"datasheet":"https:\/\/www.skyworksinc.com\/-\/media\/Skyworks\/SL\/documents\/public\/data-sheets\/si864x-datasheet.pdf","price":"$2.36 @ 1ku","product_introduction":"The SI8642BD-B-IS from Skyworks Solutions is a quad-channel digital isolator from the Si864x family, designed using capacitive coupling technology to provide robust galvanic isolation for digital communication interfaces. The device features 2 forward and 2 reverse channels, making it ideal for isolating bidirectional buses such as SPI, I2C, and UART. With a 5000 V rms isolation rating, it supports reinforced insulation requirements for industrial and medical applications. The isolator supports data rates up to 150 Mbps with a typical propagation delay of only 8 ns, enabling high-speed communication without significant latency. The device operates from a 2.5 V to 5.5 V supply range with Schmitt trigger inputs for high noise immunity. It requires only VDD bypass capacitors as external components, simplifying PCB layout. The B-grade device supports operating temperatures up to 125\u00b0C and features selectable fail-safe output states that determine the default output when input power is lost.","working_principle":"The SI8642BD-B-IS operates through capacitive isolation with three key subsystems: (1) The RF oscillator and modulator encode the digital input signal into a high-frequency carrier that is transmitted across the on-chip capacitive isolation barrier. Each channel has its own dedicated isolation capacitor pair, providing independent signal paths. (2) The capacitive isolation barrier consists of on-chip silicon dioxide capacitors that provide galvanic isolation up to 5000 V rms while maintaining high common-mode transient immunity of >35 kV\/us. The barrier also ensures low capacitive coupling between input and output, minimizing EMI. (3) The demodulator and output driver recover the original digital signal on the isolated side, with Schmitt trigger outputs for noise immunity. The fail-safe logic ensures predictable output states during power-up, power-down, and input power loss conditions. The enable inputs (EN1, EN2) provide a single control point for enabling or disabling the output drivers.","pin_description":"
      Pin No.<\/td>Pin Name<\/td>Function<\/td><\/tr>
      1<\/td>VDD1<\/td>Side 1 supply (2.5-5.5 V)<\/td><\/tr>
      2<\/td>B1<\/td>Forward channel 1 input (side 1)<\/td><\/tr>
      3<\/td>B2<\/td>Forward channel 2 input (side 1)<\/td><\/tr>
      4<\/td>A3<\/td>Reverse channel 1 output (side 1)<\/td><\/tr>
      5<\/td>A4<\/td>Reverse channel 2 output (side 1)<\/td><\/tr>
      6<\/td>EN1<\/td>Side 1 enable (active high)<\/td><\/tr>
      7-8<\/td>GND1<\/td>Side 1 ground<\/td><\/tr>
      9-10<\/td>GND2<\/td>Side 2 ground<\/td><\/tr>
      11<\/td>EN2<\/td>Side 2 enable (active high)<\/td><\/tr>
      12<\/td>B3<\/td>Reverse channel 1 input (side 2)<\/td><\/tr>
      13<\/td>B4<\/td>Reverse channel 2 input (side 2)<\/td><\/tr>
      14<\/td>A1<\/td>Forward channel 1 output (side 2)<\/td><\/tr>
      15<\/td>A2<\/td>Forward channel 2 output (side 2)<\/td><\/tr>
      16<\/td>VDD2<\/td>Side 2 supply (2.5-5.5 V)<\/td><\/tr><\/table>","application_scenarios":"
      • Isolated SPI communication between a microcontroller and remote ADC\/DAC in industrial data acquisition systems<\/li>
      • Motor drive control signal isolation requiring bidirectional channels for encoder feedback and PWM commands<\/li>
      • Medical equipment patient interface isolation where 5000 V rms reinforced insulation meets IEC 60601 safety standards<\/li>
      • Power supply digital feedback loop isolation in server and telecom rectifiers needing low propagation delay<\/li><\/ul>","alternative_models":"
        Model<\/td>Brand<\/td>Channels<\/td>Isolation<\/td>Data Rate<\/td><\/tr>
        SI8641BD-B-IS<\/td>Skyworks<\/td>4 (3F\/1R)<\/td>5000 V rms<\/td>150 Mbps<\/td><\/tr>
        SI8640BD-B-IS<\/td>Skyworks<\/td>4 (4F\/0R)<\/td>5000 V rms<\/td>150 Mbps<\/td><\/tr>
        ADuM1412BRWZ<\/td>ADI<\/td>4 (2F\/2R)<\/td>5000 V rms<\/td>150 Mbps<\/td><\/tr>
        ISO7742FDWR<\/td>TI<\/td>4 (2F\/2R)<\/td>5000 V rms<\/td>100 Mbps<\/td><\/tr>
        CIM2442<\/td>Cellular CM<\/td>4 (2F\/2R)<\/td>5000 V rms<\/td>150 Mbps<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3195","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=3195"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3195\/revisions"}],"predecessor-version":[{"id":3276,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3195\/revisions\/3276"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3195"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3195"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}