The ISO1640-Q1 (ISO164x-Q1) device is a hot swappable, low-power, bidirectional isolator that is 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. This family includes basic and reinforced insulation devices certified by VDE, UL, CSA, TUV and CQC. The ISO1640-Q1 has two isolated bidirectional channels for clock and data lines. ISO1640-Q1 integrates logic required to support bidirectional channels, providing a much simpler design and smaller footprint when compared to optocoupler-based solutions.
| Rating | Automotive |
| Isolation rating | Basic, Reinforced |
| Number of channels | 2 |
| Serial data | Bidirectional |
| Serial clock | Bidirectional |
| Data rate (max) (Mbps) | 1.7 |
| Working isolation voltage (VIOWM) (Vrms) | 450, 1500 |
| Surge isolation voltage (VIOSM) (VPK) | 6500, 10000 |
| Transient isolation voltage (VIOTM) (VPK) | 4242, 7071 |
| Withstand isolation voltage (VISO) (Vrms) | 3000, 5000 |
| CMTI (min) (kV/µs) | 50 |
| Supply voltage (max) (V) | 5.5 |
| Supply voltage (min) (V) | 2.25 |
| Operating temperature range (°C) | -40 to 125 |
| TI functional safety category | Functional Safety-Capable |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |
| SOIC (DW) | 16 | 106.09 mm² 10.3 x 10.3 |
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