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3.75千伏7通道用于SPI的多从数字隔离器adum3154数据表
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The ADuM31541 is an SPIsolator™ digital isolator optimized for a serial peripheral interface （SPI） that includes support for up to four slave devices. Based on the Analog Devices， Inc.， iCoupler® chip scale transformer technology， the low propagation delay and jitter in the CLK， MO/SI， MI/SO， and SS SPI bus signals support SPI clock rates of up to 17 MHz. The ADuM3154 isolator also provides a slave select multiplexing system that allows up to four slave devices to be serviced from one isolator. When a target slave is selected， the slave select signal propagates to the desired output with low propagation delay， allowing tight timing control. The isolated SSx is addressed through a 250 kbps low speed， 2-channel address bus， allowing the target slave device to be changed in as little as 2.5 µs.
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