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 V_RMS in the 16-DW package, and 3000 V_RMS 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.

• 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

• Serial clock
• Bidirectional
• Number of channels (#)
• 5
• Isolation rating (Vrms)
• 5000
• Serial data
• Bidirectional
• Operating temperature range (C)
• -40 to 125
• Data rate (Max) (Mbps)
• 1.7
• Surge voltage rating (Vpk)
• 10000
• Supply voltage (Max) (V)
• 5.5
• Supply voltage (Min) (V)
• 2.25

ISO1644的完整型号有：ISO1644DWR，以下是这些产品的关键参数及官网采购报价：

ISO1644DWR，工作温度：-40 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网ISO1644DWR的批量USD价格：2.5（1000+）

ISO1644DWEVM — ISO1644、ISO1643 和 ISO1642 采用 DW 封装的 I2C 隔离器评估模块

ISO1644DWEVM 是一款用于帮助设计人员评估 ISO1642、ISO1643 和 ISO1644 器件性能的评估模块，支持快速开发和分析使用 TI ISO1642、ISO1643 和 ISO1644 隔离式 I²C 器件（带通用输入和输出通道，采用 16 针 DW 封装）的数据传输系统。