![]() When the same output is high-impedance, the signal line is pulled up to the potential of the bus supply. When a node accesses the bus, its open-drain output pulls the signal line to ground potential. Both signal lines connect to the bus supply via pull-up resistors. ![]() Bus access is via open-drain outputs (Fig. The I 2C or inter-integrated circuit bus is a multi-master bus with two bidirectional signal lines: one for clock (SCL), the other for data (SDA). Still, this effort can be avoided when using an integrated version. Circuit performance, however, changes with variations in temperature and supply, making re-designs inevitable. ![]() This most stubborn, hard-to-die design continues to fascinate many engineers due to its simplicity. The discrete I 2C isolator is among the most often considered isolators. Capacitive Isolated Gate Drivers Spin AC Induction Motors.With Proper Isolation, You Won't Need To Do The Safety Dance Around High Voltages.Advanced Digital Isolation Technologies Boost Solar Power Inverter Reliability.How to Replace Optocouplers with Digital Isolators in Standard Interface Circuit (Rev. Why are Digital Isolators Certified to Meet Electrical Equipment Standards?ĭistance Through Insulation: How Digital Isolators Meet Certification Requiremen VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. TUV Certificate for Isolation Devices (Rev. Iso Design W/ 16-kV Contact Discharge ESD Protection ISO774x-Q1 Automotive, High-Speed, Reinforced Quad-Channel Digital Isolators datasheet (Rev. See the Device Functional Modes section for further details. If the input power or signal is lost, default output is high for devices without suffix F and low for devices with suffix F. The ISO7740-Q1 device has all four channels in the same direction, the ISO7741-Q1 device has three forward and one reverse-direction channels, and the ISO7742-Q1 device has two forward and two reverse-direction channels. These device s come with enable pins which can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO 2) insulation barrier. The ISO774x-Q1 device s provide high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS or LVCMOS digital I/Os. This family of devices has reinforced insulation ratings according to VDE, CSA, TUV and CQC. ![]() The ISO774x-Q1 automotive device s are high-performance, quad-channel digital isolator s with 5700 V RMS (DWW package), 5000 V RMS (DW package) and 3000 V RMS (DBQ package) isolation ratings per UL 1577. Extra-wide SOIC (DWW-16), wide-SOIC (DW-16) and QSOP (DBQ-16) package options.☘ kV IEC 6 contact discharge protection across isolation barrier.System-level ESD, EFT, and surge immunity.Robust electromagnetic compatibility (EMC).Low propagation delay: 10.7 ns typical (5-V Supplies).Low power consumption, typical 1.5 mA per channel at 1 Mbps.Default output high ( ISO774 x) and low ( ISO774 xF) options.>100-year projected lifetime at 1500 V RMS working voltage.Documentation available to aid functional safety system design: ISO7740-Q1, ISO7741-Q1, ISO7742-Q1.Device temperature Grade 1: –40☌ to 125☌ ambient operating temperature. ![]() AEC-Q100 qualified with the following results:. ![]()
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