SI8660BC-B-IS1

Common Mode Transient Immunity (Min):	35kV/µs
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	2.5 V ~ 5.5 V
Rise / Fall Time (Typ):	2.5ns, 2.5ns
Pulse Width Distortion (Max):	4.5ns
Propagation Delay tpLH / tpHL (Max):	13ns, 13ns
Data Rate:	150Mbps
Series:	Automotive, AEC-Q100
Voltage - Isolation:	3750Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	6/0
Number of Channels:	6
Isolated Power:	No
Type:	General Purpose
Technology:	Capacitive Coupling
Part Status:	Active
Packaging:	Tube

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Digital IsolatorsDigital isolators, also referred to as safety isolators, are electrical protection devices that provide a secure, electrically isolated barrier between two sections of a circuit, and are commonly used in medical, industrial, and automotive applications. The SI8660BC-B-IS1 is a four-channel isolated I/O port expander for microcontrollers. This device provides a quaranteed ±2kV ESD protection without the use of external components and has a wide range of applications.Application Field of SI8660BC-B-IS1The SI8660BC-B-IS1 is widely used in applications where two different power domains must exchange data, such as communications systems and medical devices. This device is also suitable for a variety of power applications where isolation provides additional safety or interference protection. For example, it is used in battery-powered systems to isolate the power supply and the microcontroller from each other. It is also used in industrial and home automation systems to control discrete power circuits with electric solenoid objects.Working Principle of SI8660BC-B-IS1The SI8660BC-B-IS1 utilizes a bidirectional isolated digital switch array to provide the electrical isolation between two power domains. Each switch array contains four bidirectional switches, which can be used to switch signals in both directions between two power domains through optical isolation. The optical isolation of the SI8660BC-B-IS1 aids in protecting both the powering source and the powered device.The signal isolation is provided via a common-mode isolation circuit that uses capacitive and inductive elements to prevent any interference from the primary side to the secondary side of the device. The SI8660BC-B-IS1 also features an ESD protection circuit that clamps any transient spikes, such as those from electrostatic discharge, and prevents them from propagating to the other power domain.The four-channel port expander is ideal for applications where port expansion and isolation are both needed. The user can specify ports not to be isolated from each other by setting the connection bits in the configuration register of the device, allowing the user to customize the port addressing in the same power domain.ConclusionThe SI8660BC-B-IS1 is a four-channel isolated I/O port expander for microcontrollers. It provides sturdy isolation between two power domains, meaning that no interference from one side to the other will occur. The device is ideal for applications such as communications systems, medical devices, and battery-powered systems, where both port expansion and isolation are required. The SI8660BC-B-IS1 is an ideal device for safety isolation as it provides high-level protection against transient interference and electrostatic discharge.

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