Other Parts Discussed in Thread: ISO7041,
Hello,
We're working on a design incorporating the ISO7741DBQ for an IS application that needs to be the IS circuit to IS circuit dielectric strength requirement of 500V. The DQB package exceeds this and test results confirm this. However, the IEC 60079-11 doesn't directly recognize IC's as isolation devices where it has definitions around devices such as opto couplers and capacitors.
In discussions with the IS approval body, they have pointed out a part from TI - the ISO7041 - that seems to carry an IS approval - see Section 8.7 Safety-Related Certifications.
The ISO7741 is a UART to RS-485 chip and the ISO7041 is a digital isolator (UART to UART). Both seem to be based on the same SiO2 galvanic barriers so I don't see why the ISO7741 wouldn't be suited for an IS application. What further testing, or specifications, allow the ISO7041 to be IS certified.
What other parts from TI, with this SiO2 barrier, are IS certified?
Thanks.
Dave