MAX22444–MAX22446 Reinforced, Fast, Low-Power,
Four-Channel Digital Isolators General Description Benefits and Features 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. Output enable for the A side of the
MAX22445R/S/U/V is active-low, making them ideal for
isolating a port on a shared SPI bus since the CS signal
can directly enable the MISO signal on the isolator. All
other output enables in the MAX22444-MAX22446 family
are the traditional active-high. ●● Low Power Consumption
• 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
●● Options to Support a Broad Range of Applications
• 2 Maximum Data Rates (200Mbps, 25Mbps)
• 3 Direction Configurations
• Active-High or Active-Low Enable Inputs
• 2 Fixed Output Default States (High/Low) or PinSelectable (M/N Versions) The MAX22444–MAX22446 are reinforced, fast, lowpower 4-channel digital galvanic isolators using Maxim’s
proprietary process technology. 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 …
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