描述 Description

The ISO1640, ISO1641, ISO1642, ISO1643 and ISO1644 (ISO164x) device s are hot swappable, low-power, bidirectional isolator s that are compatible with I2C interfaces. The ISO164x supports UL 1577 isolation ratings of 5000 VRMS in the 16-DW package, and 3000 VRMS in the 8-D package. Each I2C isolation channel in this low emissions device has a logic input and open drain output separated by a double capacitive silicon dioxide (SiO2) insulation barrier. The ISO1642 and ISO1643 intregrates 2 unidirectional CMOS isolation channels, while the ISO1644 intregrates 3 unidirectional CMOS isolation channels which can be used for static GPIO isolation or to isolate a Serial Peripheral Interface (SPI) bus. This family includes basic and reinforced insulation devices certified by VDE, UL, CSA, TUV and CQC. The ISO1640/2/3/4 have two isolated bidirectional channels for clock and data lines and the ISO1641 has a bidirectional data and a unidirectional clock channel. The ISO164x family integrates logic required to support bidirectional channels, providing a much simpler design and smaller footprint when compared to optocoupler-based solutions.

特性 Features

? Robust Isolated Bidirectional, I2C Compatible, Communication
? ISO1640: Bidirectional SDA and SCL communication
? ISO1641: Bidirectional SDA and unidirectional SCL communication
? ISO1642/3/4: Bidirectional SDA and SCL communication with either 2 or 3 unidirectional GPIO channels
? Hot-Swappable SDA and SCL

? Bidirectional data transfer up to 1.7 MHz Operation
? Up to 3 additional unidirectional isolated GPIO channels supporting 50 Mbps speed
? Robust isolation barrier with enhanced EMC:
? >100-year projected lifetime at 450 VRMS working voltage (D-8) and 1500 VRMS working voltage (DW-16)
? Up to 5000 VRMS isolation rating per UL1577
? Up to 10 kV reinforced surge capability
? ±100 kV/μs typical CMTI
? ±8 kV IEC-ESD 61000-4-2 contact discharge protection across isolation barrier
? Same side ±8 kV IEC-ESD unpowered contact discharge on SCL2 and SDA2 (Side 2)

? Supply range: 3 V to 5.5 V (Side 1) and 2.25 V to 5.5 V (Side 2)
? Open-drain outputs with 3.5-mA (Side 1) and 50-mA (Side 2) current-sink capability
? Max capacitive load: 80 pF (Side 1) and 400 pF (Side 2)
? 16-SOIC (DW-16) and 8-SOIC (D-8) Package Options
? –40°C to +125°C Operating Temperature
? Safety-Related Certifications (planned):
? UL 1577 Component Recognition Program
? DIN VDE V 0884-11
? IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB4943.1-2011 certifications