ISO7021FDR

• Ultra-low power consumption
  • 4.8µA per channel quiescent current (3.3V)
  • 15µA per channel at 100kbps (3.3V)
  • 120µA per channel at 1Mbps (3.3V)
• Robust isolation barrier
  • >100-year projected lifetime
  • 3000VRMS isolation rating
  • ±100kV/µs typical CMTI
• Wide supply range: 1.71V to 1.89V and 2.25V to 5.5V
• Wide temperature range: –55°C to 125°C
• Small 8-SOIC package (8-D)
• Signaling rate: Up to 4Mbps
• Default output High (ISO7021) and Low (ISO7021F) options
• Robust electromagnetic compatibility (EMC)
  • System-level ESD, EFT, and surge immunity
  • ±8kV IEC 61000-4-2 contact discharge protection across isolation barrier
  • Very low emissions
• Safety-related certifications:
  • DIN EN IEC 60747-17 (VDE 0884-17)
  • UL 1577 Component Recognition Program
  • IEC 62368-1, IEC 61010-1 and GB 4943.1
  • IECEx (IEC 60079-0 & IEC 60079-11) and ATEX (EN IEC60079-0 & EN 60079-11)

The ISO7021 device is an ultra-low power, multichannel digital isolator that can be used to isolate CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier. Innovative edge based architecture combined with an ON-OFF keying modulation scheme allows these isolators to consume very-low power while meeting 3000VRMS isolation rating per UL1577. The per channel dynamic current consumption of the device is under 120µA/Mbps and the per channel static current consumption is 4.8µA at 3.3V, allowing for use of the ISO7021 in both power and thermal constrained system designs.

The device can operate as low as 1.71V, as high as 5.5V , and is fully functional with different supply voltages on each side of isolation barrier. The two-channel isolator comes in a narrow body 8-SOIC package with one forward and one reverse-direction channel in a 8-SOIC package. The device has default output high and low options. If the input power or signal is lost, default output is high for the ISO7021 device without the suffix F and low for the ISO7021F device with the F suffix. See the Device Functional Modes section for more information.