{"id":8375,"date":"2026-06-28T13:39:21","date_gmt":"2026-06-28T13:39:21","guid":{"rendered":"https:\/\/materialparts.com\/iso7742dbqr\/"},"modified":"2026-06-28T13:39:21","modified_gmt":"2026-06-28T13:39:21","slug":"iso7742dbqr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/iso7742dbqr\/","title":{"rendered":"ISO7742DBQR"},"content":{"rendered":"

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

The ISO7742DBQR from Texas Instruments is a quad-channel, 2-forward\/2-reverse, 100 Mbps reinforced digital isolator in a 16-SSOP (DBQ) package. With 3000 Vrms isolation, 85 kV\/\u00b5s CMTI, and 10.7 ns propagation delay, it provides robust EMC performance for high-speed isolated communication interfaces.<\/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
\u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n4 (2 forward \/ 2 reverse)<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n100 Mbps<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n3000 Vrms (DBQ), 5000 Vrms (DW)<\/td>\n<\/tr>\n
CMTI<\/td>\n85 kV\/\u00b5s (min), 100 kV\/\u00b5s (typ)<\/td>\n<\/tr>\n
\u062a\u0623\u062e\u064a\u0631 \u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631<\/td>\n10.7 ns (typ @ 5V)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.25 V to 5.5 V<\/td>\n<\/tr>\n
Isolation Rating<\/td>\nReinforced (DBQ and DW packages)<\/td>\n<\/tr>\n
Default Output<\/td>\nHigh (no F suffix)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n16-SSOP (DBQ)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 100 Mbps data rate for high-speed SPI and isolated communication<\/li>\n
  • 85 kV\/\u00b5s minimum CMTI for noisy industrial environments<\/li>\n
  • 10.7 ns typical propagation delay at 5V supply<\/li>\n
  • Reinforced insulation per VDE, CSA, TUV, and CQC<\/li>\n
  • Low 1.5 mA per channel at 1 Mbps<\/li>\n
  • Enable pins for output high-impedance and power reduction<\/li>\n
  • Level translation between 2.25 V and 5.5 V logic domains<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Isolated RS-485, RS-232, and CAN bus<\/li>\n
    • Motor drive and inverter isolation<\/li>\n
    • Solar inverter communication<\/li>\n
    • \u0639\u0632\u0644 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0637\u0628\u064a\u0629<\/li>\n
    • Industrial automation and PLC I\/O<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ISO7742DBQR from Texas Instruments is a quad-channel, 2-forward\/2-reverse, 100 Mbps reinforced digital isolator in a 16-SSOP (DBQ) package. With 3000 Vrms isolation, 85 kV\/\u00b5s CMTI, and 10.7 ns propagation delay, it provides robust EMC performance for high-speed isolated communication interfaces. Key Specifications Channels 4 (2 forward \/ 2 reverse) Data Rate 100 […]<\/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":[13,20],"tags":[],"chip_brand":[138],"class_list":["post-8375","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"Quad-ch 2\/2 reinforced digital isolator, 100Mbps, 3000Vrms, 85kV\/us CMTI, SSOP-16","date_code":"","package_case":"SSOP-16 (4.90 x 3.90 x 1.75 mm)","in_stock":5010,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/iso7742.pdf","price":"$0.99 @ 1ku","product_introduction":"The ISO7742DBQR from Texas Instruments is a high-performance quad-channel digital isolator with two forward and two reverse channels in a 16-pin SSOP (DBQ) package. The device provides 3000 Vrms isolation with reinforced insulation rating per VDE, CSA, TUV, and CQC standards, 4242 VPK transient isolation, and up to 10 kV surge capability. The 100 Mbps maximum data rate supports high-speed isolated communication protocols including SPI, UART, and isolated RS-485\/RS-232. The device achieves 85 kV\/\u00b5s minimum CMTI and 10.7 ns typical propagation delay at 5V supply, making it suitable for motor drive and inverter applications with high common-mode noise. The capacitive SiO2 double insulation barrier provides long-term reliability with more than 30-year projected lifetime at 1500 Vrms working voltage. Enable pins (EN1\/EN2) allow putting outputs in high-impedance for multi-master bus applications and reducing power consumption.","working_principle":"The ISO7742DBQR uses capacitive coupling through a double silicon dioxide (SiO2) insulation barrier to transfer digital signals across the isolation boundary. Each channel consists of an input buffer, a high-frequency modulator, two series isolation capacitors, a demodulator, and an output buffer. The modulator encodes the input logic state into differential pulses that pass through the capacitive barrier. The demodulator on the output side recovers the original logic level. An internal refresh mechanism periodically updates the output state even when the input is static, preventing the output from drifting. If input power is lost, the output defaults to high (non-F suffix) or low (F suffix). The enable pins (EN1, EN2) control the output buffers on each side independently. The robust EMC design includes system-level ESD protection (8 kV IEC 61000-4-2 contact discharge across barrier), EFT immunity, and surge immunity.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VCC1<\/td>Side 1 supply (2.25 V to 5.5 V)<\/td><\/tr>
      2<\/td>IN1<\/td>Forward channel 1 input<\/td><\/tr>
      3<\/td>IN2<\/td>Forward channel 2 input<\/td><\/tr>
      4<\/td>OUT3<\/td>Reverse channel 3 output<\/td><\/tr>
      5<\/td>OUT4<\/td>Reverse channel 4 output<\/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>IN4<\/td>Reverse channel 4 input<\/td><\/tr>
      13<\/td>IN3<\/td>Reverse channel 3 input<\/td><\/tr>
      14<\/td>OUT2<\/td>Forward channel 2 output<\/td><\/tr>
      15<\/td>OUT1<\/td>Forward channel 1 output<\/td><\/tr>
      16<\/td>VCC2<\/td>Side 2 supply (2.25 V to 5.5 V)<\/td><\/tr><\/table>","application_scenarios":"
      • Isolated RS-485<\/strong>: Bidirectional data (TX\/RX) plus direction control across isolation barrier in industrial RS-485 networks<\/li>
      • Motor Drive Isolation<\/strong>: Isolating PWM gate drive signals and fault feedback between control MCU and gate driver<\/li>
      • Solar Inverter<\/strong>: Isolating communication between MPPT controller and grid-side monitoring in solar inverters<\/li>
      • Medical Equipment<\/strong>: Patient-connected isolation for ECG and EEG front-end communication with processing unit<\/li>
      • PLC I\/O Modules<\/strong>: Isolating digital input and output channels in programmable logic controller modules<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Ch<\/th>Rate<\/th>CMTI<\/th>VISO<\/th>Notes<\/th><\/tr>
        ISO7742FDBQR<\/td>TI<\/td>2\/2<\/td>100 Mbps<\/td>85 kV\/\u00b5s<\/td>3000 Vrms<\/td>Default-low output<\/td><\/tr>
        ADuM1402BRWZ<\/td>ADI<\/td>2\/2<\/td>100 Mbps<\/td>75 kV\/\u00b5s<\/td>2500 Vrms<\/td>ADI alternative<\/td><\/tr>
        Si8642BB-B-IS<\/td>Silicon Labs<\/td>2\/2<\/td>150 Mbps<\/td>75 kV\/\u00b5s<\/td>5000 Vrms<\/td>Higher speed, SOIC<\/td><\/tr>
        ISO7242MDWR<\/td>TI<\/td>2\/2<\/td>150 Mbps<\/td>25 kV\/\u00b5s<\/td>2500 Vrms<\/td>Older generation<\/td><\/tr>
        CNL4802M<\/td>onsemi<\/td>2\/2<\/td>25 Mbps<\/td>50 kV\/\u00b5s<\/td>5000 Vrms<\/td>Lower speed<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/8375","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=8375"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/8375\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=8375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=8375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=8375"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=8375"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}