- Ultra-Low Power Consumption
- 11.4μA per Channel at DC with VDD = 3.3V
- 15.4μA per Channel at 100kbps with VDD = 3.3V
- 54.7μA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50μs Waveform
- High CMTI (200kV/μs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)
These devices transfer digital signals between circuits with different power domains, using as little as 90.7μW per channel at 1Mbps (1.8V supply). The ultra-low-power feature reduces system dissipation, increases reliability, and enables compact designs.
Devices are available with a glitch rejection filter of either 29ns or 70ns (typ) and with default-high or default-low outputs. The devices feature low propagation delay and low clock jitter, which reduces system latency.
Independent 1.71V to 5.5V supplies on each side also make the devices suitable for use as level translators.
The MAX22420/MAX22820 feature two channels transferring data in the same direction. The two channels of the MAX22421/MAX22821 transfer data in opposite directions.
Ordering Information appears at end of data sheet.
- 4-20mA Loop Process Control
- Battery Management
- Compact Micro PLC
- Parasitically Powered Applications
The MAX22420/1, MAX22820/1 are a family of 2-channel, reinforced, ultra-low-power digital galvanic isolators using Analog Devices’ proprietary process technology. The MAX22420/1 feature reinforced isolation with a withstand voltage rating of 3kVRMS for 60 seconds. The MAX22820/1 feature reinforced isolation with a withstand voltage rating of 5kVRMS for 60 seconds. Devices are rated for operation at ambient temperature from -40°C to +125°C.
19-101281; Rev 2; 8/22