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The MAX22345SAAP 4-channel digital current isolator transfers digital signals between circuits with different power domains. Power consumption is less than 0.74mW per channel at 1Mbps rate (1.8V supply). The isolators feature enhanced isolation with a voltage withstand rating of 3.75kVRMS (for 60 seconds). All possible unidirectional channel configurations are provided to support any 4-channel design. This includes SPI, RS-485 and digital I/O applications.

Product Properties

Technology: Capacitive coupling

Type: CAN, RS422, RS485, SPI

Isolated power supply: None

Number of channels: 4

Inputs - Side 1/Side 2: 3/1

Channel Type: Unidirectional

Voltage - Isolated: 3750Vrms

Common Mode Transient Immunity (min): 50kV/µs (typical)

Data Rate: 200Mbps

Propagation Delay tpLH / tpHL (max): 9.2ns, 9.4ns

Pulse Width Distortion (max): 2ns

Rise / fall time (typical): 0.8ns, 1ns (max)

Voltage - Supply: 1.71V ~ 5.5V

Operating Temperature: -40°C ~ 125°C

Mounting Type: Surface Mount

Package/Shell: 20-SSOP (0.209", 5.30mm Width)

Supplier Device Package: 20-SSOP

Applications

Isolated SPI interface

Industrial automation fieldbus communications

Isolated RS-485/RS-422, CAN

Battery management

Medical systems

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