The ISO1540 has two isolated bidirectional channels for clock and data lines while the ISO1541 has a bidirectional data and a unidirectional clock channel. The ISO1540 and ISO1541 devices enable a complete isolated I 2C interface to be implemented within a small form factor. This isolation technology provides for function, performance, size, and power consumption advantages when compared to optocouplers. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO 2) barrier. The ISO1540 and ISO1541 devices are low-power, bidirectional isolators that are compatible with I 2C interfaces. CSA approval per IEC 62368-1 end equipment standard. 2500-V RMS isolation for 1 minute per UL 1577. HBM ESD protection of 4 kV on all pins 8 kV on bus pins.Open-drain outputs With 3.5-mA Side 1 and 35-mA Side 2 sink current capability.Isolated bidirectional, I 2C compatible, communication.parametric-filter Isolated digital inputs.parametric-filter Isolated RS-485 transceivers.parametric-filter Isolated LVDS buffers.parametric-filter Isolated CAN transceivers.
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