{"id":8437,"date":"2026-06-29T00:47:56","date_gmt":"2026-06-29T00:47:56","guid":{"rendered":"https:\/\/materialparts.com\/iso7761fdbq\/"},"modified":"2026-06-29T00:47:56","modified_gmt":"2026-06-29T00:47:56","slug":"iso7761fdbq","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/iso7761fdbq\/","title":{"rendered":"ISO7761FDBQ"},"content":{"rendered":"<h2>\u4ea7\u54c1\u6982\u89c8<\/h2>\n<p>The ISO7761FDBQ from Texas Instruments is a robust EMC, six-channel, 1\/5 (1 forward \/ 5 reverse), reinforced digital isolator with default output low (F suffix) in a 16-SSOP package. It provides 100 Mbps data rate, 3000 Vrms isolation, and 85 kV\/\u00b5s minimum CMTI, ideal for bidirectional communication across isolation barriers.<\/p>\n<h2>\u4e3b\u8981\u89c4\u683c<\/h2>\n<ul>\n<li>Channels: 6 (1 forward \/ 5 reverse)<\/li>\n<li>Data Rate: 100 Mbps<\/li>\n<li>Propagation Delay: 10.7 ns typ @ 5 V<\/li>\n<li>Isolation Voltage: 3000 Vrms (DBQ package)<\/li>\n<li>Surge Isolation: 10 kVPK<\/li>\n<li>CMTI: 85 kV\/\u00b5s min, \u00b1100 kV\/\u00b5s typ<\/li>\n<li>Supply: 2.25 V to 5.5 V<\/li>\n<li>Default Output: Low (F suffix)<\/li>\n<li>Creepage\/Clearance: 3.7 mm min<\/li>\n<li>Operating Temperature: -55\u00b0C to +125\u00b0C<\/li>\n<li>Package: SSOP-16 (DBQ) (4.9 \u00d7 3.9 mm), MSL 2<\/li>\n<\/ul>\n<h2>\u7279\u70b9<\/h2>\n<ul>\n<li>Robust EMC performance (IEC 61000-4-2, \u00b18 kV contact across barrier)<\/li>\n<li>Reinforced isolation per DIN EN IEC 60747-17<\/li>\n<li>UL 1577, IEC 61010-1\/62368-1\/60601-1 certified<\/li>\n<li>Enable pins for output high-impedance<\/li>\n<li>Isolation life > 30 years at 1500 VRMS working voltage<\/li>\n<\/ul>\n<h2>\u5e94\u7528<\/h2>\n<ul>\n<li>Isolated SPI communication (1 CS forward + 5 data return)<\/li>\n<li>Industrial automation I\/O isolation<\/li>\n<li>Motor drive feedback isolation<\/li>\n<li>Medical equipment signal isolation<\/li>\n<li>Isolated RS-485\/CAN interfaces<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The ISO7761FDBQ from Texas Instruments is a robust EMC, six-channel, 1\/5 (1 forward \/ 5 reverse), reinforced digital isolator with default output low (F suffix) in a 16-SSOP package. It provides 100 Mbps data rate, 3000 Vrms isolation, and 85 kV\/\u00b5s minimum CMTI, ideal for bidirectional communication across isolation barriers. Key Specifications Channels: [&hellip;]<\/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-8437","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"6-ch 1\/5 reinforced digital isolator, 100Mbps, 3kVrms, default low, SSOP-16","date_code":"","package_case":"SSOP-16 (DBQ) (4.9 \u00d7 3.9 \u00d7 1.75 mm)","in_stock":11674,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/iso7761.pdf","price":"$2.25 @ 1ku","product_introduction":"The ISO7761FDBQ from Texas Instruments is a six-channel reinforced digital isolator with a 1 forward \/ 5 reverse channel configuration, optimized for isolated communication interfaces where a single control signal traverses the barrier in one direction while multiple data or status signals return in the opposite direction. This asymmetrical channel arrangement is particularly suited for isolated SPI interfaces where chip select (CS) is the forward channel and data return paths (MISO, fault, and status flags) use the five reverse channels. The device supports 100 Mbps data rate with 10.7 ns typical propagation delay at 5 V supply. The dual-capacitor SiO2 insulation barrier provides 3000 Vrms isolation voltage with 85 kV\/\u00b5s minimum CMTI and robust EMC performance including \u00b18 kV IEC 61000-4-2 contact discharge protection. Comprehensive safety certifications (DIN EN IEC 60747-17, UL 1577, IEC 61010-1\/62368-1\/60601-1) cover industrial and medical applications.","working_principle":"The ISO7761FDBQ uses capacitive isolation technology with dual SiO2 dielectric barriers. Each channel consists of an input modulator, two isolation capacitors, and an output demodulator. The single forward channel transmits signals from Side 1 to Side 2, while the five reverse channels transmit from Side 2 to Side 1. Digital signals are modulated into high-frequency differential pulses, transmitted across the capacitive barriers, and demodulated back to the original logic levels. The dual-capacitor architecture provides excellent common-mode transient immunity (85 kV\/\u00b5s minimum). The F suffix version includes default-low output circuits that hold outputs in a defined low state when input power is absent or during UVLO events. Enable pins on both sides can place outputs in high-impedance state for power conservation or bus sharing.","pin_description":"<table border=\"1\"><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>VCC1<\/td><td>Side 1 Supply (2.25-5.5 V)<\/td><\/tr><tr><td>2<\/td><td>OUT1<\/td><td>Forward Channel 1 Output (Side 2 \u2192 Side 1 direction, default low)<\/td><\/tr><tr><td>3-7<\/td><td>OUT2-OUT6<\/td><td>Reverse Channel Outputs (Side 2 signals returned to Side 1, default low)<\/td><\/tr><tr><td>8<\/td><td>GND1<\/td><td>Side 1 Ground<\/td><\/tr><tr><td>9<\/td><td>GND2<\/td><td>Side 2 Ground<\/td><\/tr><tr><td>10<\/td><td>IN1<\/td><td>Forward Channel 1 Input (Side 1 \u2192 Side 2)<\/td><\/tr><tr><td>11-15<\/td><td>IN2-IN6<\/td><td>Reverse Channel Inputs (Side 2 inputs)<\/td><\/tr><tr><td>16<\/td><td>VCC2<\/td><td>Side 2 Supply (2.25-5.5 V)<\/td><\/tr><\/table>","application_scenarios":"<ul><li><b>Isolated SPI Interface<\/b>: 1 forward (CS) + 5 reverse (MISO, fault, status) channel configuration for isolated ADC\/Sensor SPI communication<\/li><li><b>Motor Drive Signal Isolation<\/b>: 1 forward (PWM enable) + 5 reverse (encoder, fault, current sense) for inverter feedback<\/li><li><b>Industrial I\/O Modules<\/b>: Asymmetric channel count matches typical PLC input module topology (1 command + 5 status returns)<\/li><li><b>Medical Equipment<\/b>: IEC 60601-1 compliant isolation for patient-connected equipment with multiple return signals<\/li><li><b>Isolated RS-485<\/b>: 1 forward (TX enable) + 5 reverse (RX, DE, fault) for isolated transceiver control<\/li><\/ul>","alternative_models":"<table border=\"1\"><tr><th>Model<\/th><th>Brand<\/th><th>Channels<\/th><th>Speed (Mbps)<\/th><th>Viso (Vrms)<\/th><\/tr><tr><td>ISO7760FDBQ<\/td><td>TI<\/td><td>6 (0\/6)<\/td><td>100<\/td><td>3000<\/td><\/tr><tr><td>ISO7762FDBQ<\/td><td>TI<\/td><td>6 (2\/4)<\/td><td>100<\/td><td>3000<\/td><\/tr><tr><td>ISO7742FDBQ<\/td><td>TI<\/td><td>4 (2\/2)<\/td><td>100<\/td><td>3000<\/td><\/tr><tr><td>ADuM7642<\/td><td>ADI<\/td><td>4 (2\/2)<\/td><td>25<\/td><td>3750<\/td><\/tr><tr><td>Si8625<\/td><td>Silicon Labs<\/td><td>6 (1\/5)<\/td><td>150<\/td><td>5000<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=8437"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8437\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=8437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=8437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=8437"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}