MAX22444/ MAX22445/ MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators

The MAX22444–MAX22446 are reinforced, fast, low-power 4-channel digital galvanic isolators. These devices transfer digital signals between circuits with different power domains, using as little as 0.74mW per channel at 1Mbps (1.8V supply).

All of the devices in the family feature reinforced isolation for a withstand voltage rating of 5kVRMS for 60 seconds. The MAX22444–MAX22446 family offers all possible unidirectional channel configurations to accommodate any 4-channel design, including SPI, RS-485, and digital I/O applications.

Key Features:

• Up to 200Mbps Maximum Data Rate
• Withstands 5kVRMS for 60s (VISO)
• Continuously Withstands 1500VRMS (VIOWM)
• Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs waveform
• High CMTI (50kV/µs, Typical)
• 0.74mW per Channel at 1Mbps with VDD = 1.8V
• 1.4mW per Channel at 1Mbps with VDD = 3.3V
• 3.2mW per Channel at 100Mbps with VDD = 1.8V
• 2 Maximum Data Rates (200Mbps, 25Mbps)
• 3 Direction Configurations
• 2 Fixed Output Default States (High/Low) or Pin-Selectable (M/N Versions)

Applications/Uses:

• Battery Management
• Isolated RS-485/RS-422, CAN
• Isolated SPI Interface
• Medical Systems

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