SI8641BD-B-ISR

Common Mode Transient Immunity (Min):	35kV/µs
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm 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:	5000Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	3/1
Number of Channels:	4
Isolated Power:	No
Type:	General Purpose
Technology:	Capacitive Coupling
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Digital Isolators

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Digital Isolators offer superior isolation between electrical systems, protecting both equipment and personnel. They provide galvanic insulation between voltage rails and can be used for both input and output signals, isolating logic/analog circuits from each other. One popular isolator is the SI8641BD-B-ISR. It enables a designer to take advantage of high-resolution analog data throughput with very low power consumption.

Application Field

The SI8641BD-B-ISR digital isolator is designed for applications with tight cost, size, and power constraints. It can be used for automotive systems, power systems, medical systems, industrial control systems, and any other system that requires precise control and isolation of signals. It is especially well suited for applications with limited power budgets or high levels of electromagnetic interference (EMI).

Working Principle

The SI8641BD-B-ISR digital isolator uses optocouplers to transfer signals. It uses an 8-bit bidirectional data bus to transfer data between two integrated circuits (ICs). It has an extremely fast signal switching speed with a 3-MHz bandwidth, which makes it suitable for high-speed applications. It is also capable of providing galvanic isolation of up to 3750 Vrms.The isolator is designed with an integrated voltage regulator, which helps to reduce energy consumption while ensuring signal integrity. The integrated voltage regulator also helps to ensure that the voltage levels of the sources do not exceed the voltage levels of the device. This helps to reduce power losses and dithering, as well as improving reliability.The digital isolator utilizes a high-speed optoelectronic conversion topology to ensure signal isolation. This topology utilizes a pin-compatible 8-bit bidirectional data bus to transfer data between two separate integrated circuits (ICs). It has a unique design which allows for low-power switching and data transfer—making it an ideal solution for low power systems.Additionally, the digital isolator offers unique features such as a four-level skip mode which allows the system to be powered off while preserving its digital state. It also features a wide operating temperature range of -40°C to +125°C, making it suitable for harsh environments.In conclusion, the SI8641BD-B-ISR is an ideal choice for applications that require high resolution and precise control with low power consumption. Its optocouplers ensure reliable isolation of signals, while its voltage regulator ensures that the voltage levels do not exceed the voltage levels of the device. It is also designed with other unique features such as a four-level skip mode, making it an excellent option for applications under tight cost, size, and power constraints.

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