https://e2e.ti.com/support/isolation-group/isolation/<p style="display:none;">blank</p>en-USTelligent Community 13https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655919/isousb211-q1-design-review/6384801Tue, 16 Jun 2026 18:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4b31698f-470f-4f30-8cf3-5e21ca652061Sri Krishna VDid a mistake in text. Correcting now J2 is shorted after Power supply is tested J3 is shorted and J1 is open for USB Power operation J1 is shorted and J3 is open for Local Power operation J12 is shorted after 5V power is tested J4-J11 are equalization jumpers. open/close as requiredhttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655919/isousb211-q1-design-reviewTue, 16 Jun 2026 16:40:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bd43fe90-3e6c-4866-a01f-b5494d38ae50Sri Krishna VPart Number: ISOUSB211-Q1 Other Parts Discussed in Thread: ISOUSB211 , I am using ISOUSB211 not ISOUSB211-Q1 as it is not yet avaliable for purchse. Can you help us review the schematic ISO USB.pdfISOUSB211ISOUSB211-Q1https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655882/tida-01604-tida-01604-parallel-diode-bridgeTue, 16 Jun 2026 15:02:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:baeb0be9-cd53-48ed-9544-cfd328411537Noah MartinPart Number: TIDA-01604 Other Parts Discussed in Thread: LMG3522R030-Q1 Hi, We are developing a 2kW 120VAC/240VAC Totem Pole single phase and we see that you have some diodes that are prior to the boost inductor. We have a couple of questions related to these. We are utilizing the LMG3522R030-Q1 GaN FET for our development. Can you please comment on the purpose of D102? What is the purpose of these diodes? How do you rate them for the use case? What would happen if we did not utilize these diodes? Thanks,LMG3522R030-Q1TIDA-01604https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655839/isow3080-driver-functional-table-clarificationTue, 16 Jun 2026 13:06:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:395d6c25-0a7c-457a-b26a-32026140378fJulius BurtellPart Number: ISOW3080 Hi team, Quick clarification question from the prelim datasheet: Table 8.2 calls out a Hi-Z state until VDD is present, which makes sense, but we have an invalid operational state when VDDL is not present. Is there any more information available on what state the bus is in when VDDL is low? I see the note where it&#39;s indicated that IO inputs can cause indetermined output, but is there any information on the output state if only VDD is present, where VDDL, D and DE are both low? I assume that the output would be hi-Z but would like to confirm. Thanks, JuliusISOW3080https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1654574/isow1050-no-stock-to-order/6384236Tue, 16 Jun 2026 11:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:67aad698-ca99-483f-b67b-2398660a0485Joe SivaswamyKoteshwar, thanks for the clarification. I will coordinate with CSC.https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1653406/isow1432-full-duplex/6384114Tue, 16 Jun 2026 09:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4e5f8aa0-edf7-477f-914d-311c548dad85Varun KumarHi Jeff, If DE and RE are shorted together - then only either Driver or Receiver will be enables at a time and it is suited for half duplex operation only. Also, Full Duplex and Half Duplex Operation cannot be achieved using same schematic connection because A/B needs to be shorted to Z/Y on Bus Side to achieve Half Duplex in a Full Duplex capable device - (+) [FAQ] ISO1452: [FAQ] How to configure a RS485 Full-duplex transceiver as Half-duplex? - Isolation forum - Isolation - TI E2E support forums You have mentioned that only Full-Duplex is required - for that DE and RE needs to be always set to HIGH and LOW respectively. Regards Varunhttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655706/iso7763-q1-iso7763fqdbqrq1-change-in-origin-and-manufacturing-processTue, 16 Jun 2026 08:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a6ee8086-c865-47c8-a31b-eaadc1586634Stephen moPart Number: ISO7763-Q1 Does the change in production location and process indicated by the PCN affect the normal use?Looking forward to your reply. Thank you. PCN20241218004.2.pdfISO7763-Q1https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655199/iso7763-q1-the-backside-of-the-chip-is-different/6383970Tue, 16 Jun 2026 07:52:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bafb20ed-dfe3-4769-b281-2afbfea5fe64Stephen moOne chip has a round hole in the middle of its backside, while the other chip has no round hole on its backside. And these two chips are from the same batch of materials. Is this normal?https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1654574/isow1050-no-stock-to-order/6383954Tue, 16 Jun 2026 07:42:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:01d89dd0-96d3-46bb-9007-9f1c69f1e86aKoteshwar RaoHi Joe, This is a TI E2E forum that is open for all users to post and respond to any posts. As Varun suggested you, I recommend that you reach out to CSC regarding the out of stock situation and they will be able to help you. Alternatively, you can subscribe to product availability notification by clicking on &quot;Notify me when available&quot; option in the ordering section by logging in to your myTI account so that you get notified when the part becomes available. Thanks. Regards, Koteshwar Raohttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655297/iso3086-regarding-4m-changes-of-the-device/6383944Tue, 16 Jun 2026 07:37:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0592aa1a-bb8e-48fb-8df0-3011d688d8ceKoteshwar RaoHi Kyohei-san, Thanks for reaching out. Please allow us to review the information you have shared and get back to you. Thanks. Regards, Koteshwar Raohttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1653406/isow1432-full-duplex/6383921Tue, 16 Jun 2026 07:22:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:db7389fe-cf50-454f-8c14-ffb2c2ad11baJeff YANGHi Varun, Could you please confirm whether this can be implemented in the hardware design? Thanks. 　①RS485, full-duplex 　②RS422, full-duplex 　③RS485, half-duplex Jeffhttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655655/iso7741tb-q1-can-we-swap-d1-and-d2-pin-1-and-pin-2Tue, 16 Jun 2026 06:19:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3f38599f-7eca-4fcb-8eb9-9dc9b9e13f64SARANG GOKHEPart Number: ISO7741TB-Q1 Can we swap Pin 1 (D1) and Pin 2 (D2) of ISO7741TBDWRQ1, is there any effect or malfunctioning occour due to swapping ?HybridISO7741TB-Q1electric &amp; powertrain systemshttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technology/6383141Mon, 15 Jun 2026 18:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d962dfb6-92e6-42ce-b0b2-0b86b12055e9Timothy BurroughsUnderstood on needing to verify what can be shared here. Same for my side; I can&#39;t say much more into the application specifics, other than a requirement for reinforced, continuous withstand of at least 800VDC. If I may double-check: you confirmed 1500 VDC for a reinforced rating, but looking at the VDE certificate, is it actually 800V? I appreciate your considerations; I had the same back-forth in my head; if you could just confirm for reinforced. And what would the reinforced DC working voltage become if conformal coating? (i.e., Improving the pollution degree of the isolator to PD1.)https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655199/iso7763-q1-the-backside-of-the-chip-is-different/6383111Mon, 15 Jun 2026 17:55:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:cf868c52-5b3b-4929-b141-1fdec814f263Sara MillikenHey Stephen, Thanks for reaching out. It is difficult to tell from this picture exactly what you are talking about. What part of the back side of the chip are you referring to? Could you additionally provide the topside marking of each chip so that we can confirm device information? If you have an image of the sticker from the box that the reel came in, that would also be helpful. Thanks, Sarahttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655410/iso7221m-iso7221md-and-iso7241cdw-replacement/6383029Mon, 15 Jun 2026 16:53:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:72db65e3-2ca4-4345-9692-ed2a6c2c7960Sara MillikenHey Andrew, Thank you for reaching out. The &quot;R&quot; at the end of the part number simply signifies that the device comes in tape and reel packaging. You can find all relevant packaging information starting at section 11, page 28 of the data sheet, titled &quot;Mechanical, Packaging, and Orderable Information.&quot; I&#39;ve also provided an image below for convenience: Further, ISO7221 and ISO7241 are legacy devices from TI. For best performance and reliability, please consider updating to ISO6421 and ISO6441 . These will be pin to pin with our previous generation devices. Let us know if you have any further questions. Best, Sarahttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technology/6382883Mon, 15 Jun 2026 15:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2ceb6739-761e-4659-bb03-da8df74a32b2Ethan WhiteHi Timothy, I have to double check with a colleague on what design specifics I can share on a public forum, so please allow me some extra time to do that. In the meantime I can answer some of your questions: [quote userid=&quot;472023&quot; url=&quot;~/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technology&quot;]What would the equivalent continuous, reinforced DC working voltage be for both products (VDE)?[/quote] 1500 VDC for ISO646x and 2121 VDC for ISO676x per their datasheets. [quote userid=&quot;472023&quot; url=&quot;~/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technology&quot;]Does the ISO646x utilize a dual-die, double-sided series SiO2 capacitor construction (one capacitor on the transmitter die, one on the receiver die) identical to the ISO676x? Or does it utilize a single-layer/single-die SiO2 barrier topology?[/quote] Let me get back to you on these. [quote userid=&quot;472023&quot; url=&quot;~/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technology&quot;]Are there specific transient-heavy or high-working-voltage applications where TI recommends one over the other for better long-term reliability?[/quote] Are you able to provide specifics about your design? With more details I could give you a better recommendation. [quote userid=&quot;472023&quot; url=&quot;~/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technology&quot;]Do both families leverage the same lifetime acceleration and high-voltage breakdown reliability models to achieve their respective (planned) VDE reinforced statuses? And, does the ISO646x have a planned certification date?[/quote] Again, let me get back to you on these. Ethanhttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655467/iso6462-iso646x-vs-iso676x-isolation-technologyMon, 15 Jun 2026 14:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b77d1f19-a356-46bf-ac94-6761a2016b82Timothy BurroughsPart Number: ISO6462 Hello TI Isolation Team, BLOOMY is evaluating the ISO676x and ISO646x families of six-channel digital isolators for a high-reliability, reinforced-insulated simulation instrument. We are analyzing the isolator- and system-level safety margins, and implementation differences between these two product families, regarding how their physical construction may impact long-term reliability and safety ratings. In reviewing the datasheets, we noted a difference in how the isolation structures are described: The ISO676x explicitly calls out a &quot;double capacitive&quot; silicon dioxide (SiO2) insulation barrier. The ISO646x states that it uses &quot;SiO2 as the isolation barrier,&quot; omitting the &quot;double capacitive&quot; phrasing. While both families carry reinforced ratings at 1500Vrms working voltage, we’d like to understand any underlying structural differences ahead of going into system-level compliance certification. Could a TI engineer clarify the following: Voltage Rating: What would the equivalent continuous, reinforced DC working voltage be for both products (VDE)? BLOOMY is considering safe application up to at least 800VDC, continuous withstand. Insulation Architecture: Does the ISO646x utilize a dual-die, double-sided series SiO2 capacitor construction (one capacitor on the transmitter die, one on the receiver die) identical to the ISO676x? Or does it utilize a single-layer/single-die SiO2 barrier topology? System Safety: Does the &quot;double capacitive&quot; structure of the ISO676x provide greater fault tolerance (e.g., defect containment if one layer degrades) than the ISO646x? Are there specific transient-heavy or high-working-voltage applications where TI recommends one over the other for better long-term reliability? VDE Certification: Do both families leverage the same lifetime acceleration and high-voltage breakdown reliability models to achieve their respective (planned) VDE reinforced statuses? And, does the ISO646x have a planned certification date? Thank you.ISO6462https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1654574/isow1050-no-stock-to-order/6382606Mon, 15 Jun 2026 12:22:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:457ee163-c413-460a-b870-81f556650a1cJoe SivaswamyHI Varun, - you can see in the same thread above a reply I got from Jojo to me- I don&#39;t know how he (someone outside of TI) got into the thread and sent me a reply - Can you verify pleasehttps://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655410/iso7221m-iso7221md-and-iso7241cdw-replacementMon, 15 Jun 2026 11:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f405385c-442b-4840-b852-75291a8af9afAndrew SchaeferPart Number: ISO7221M I am using the ISO7221MD and ISO7241CDW in my design and I am looking to replace them with the ISO7221MDR and ISO7241CDWR. What are the difference between the two parts, are they the same part?ISO7221MISO6421ISO6441https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1655277/iso1643-similar-alternate-part-for-iso1643dwr-with-vcci-1-8v-support/6382377Mon, 15 Jun 2026 08:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fa276dfd-86bd-4da8-a9a8-a447f31f3c99Varun KumarHI Sampat, Thanks for reaching out. Currently, we do not have an I2C Isolator which can support VCC at 1.8V. You need to use an I2C level shifter such as TCA980x to change the voltage domain to 1.8V. And for the two GPIO signals - ISO6720 can be used to convert the signal to 1.8V domain. So, a final solution would consist of ISO1640+ISO6720 and a TCA980x on the VCC1 side to convert I2C signals to 1.8V. Regards Varun