MAX14935EAWE+

Common Mode Transient Immunity (Min):	25kV/µs (Typ)
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:	1.71 V ~ 5.5 V
Rise / Fall Time (Typ):	2ns, 2ns
Pulse Width Distortion (Max):	2.6ns
Propagation Delay tpLH / tpHL (Max):	27.5ns, 28.8ns
Data Rate:	25Mbps
Series:	--
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:	Tube

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Digital Isolators: MAX14935EAWE+ Application Field and Working Principle

Digital isolators are used to electrically separate secondary circuits from a primary circuit, using either an inductive transformer or capacitive coupling. The MAX14935EAWE+ is one example of such a device that utilizes capacitive coupling. This article explains the application field and working principle of the part.

Applications of the MAX14935EAWE+

The MAX14935EAWE+ is a low-voltage (1.2 V to 5.5 V) digital isolator, designed to maintain the safety of the system in isolation applications such as isolated data transmission, signal isolation, power supply noise reduction, etc. It is suitable for use in medical, automotive, industrial, consumer, and other applications.The part is also suitable for applications such as isolated power systems, isolated communication links, and digital communications. It is commonly used in photoelectric converters, digital buses, remote monitoring, and protection systems.

Working Principle of the MAX14935EAWE+

The MAX14935EAWE+ is an isolated digital logic gate, employing capacitive coupling to transfer signals between the input and output. It works by allowing signals to pass through a dielectric barrier, blocking the DC and low-frequency components of the signal. It also allows high-frequency components to pass through, resulting in electrical isolation between the input and output.The device employs an open collector output for the signal transfer mechanism, allowing for a higher bandwidth and lower jitter than other traditional methods. The part also includes a level shifting circuit which can enable voltage levels of up to 5.5 V to be isolated.The wiring of the MAX14935EAWE+ features ESD, EMI, and surge immunity protection, eliminating the need for external protection circuitry. The part also has built-in temperature sensors and diagnostic features which enable safe operation in extreme operating temperatures.

Conclusion

The MAX14935EAWE+ is an isolated digital logic gate that utilizes a capacitive coupling to transfer signals between the input and output. It is designed to maintain the safety of the system in isolation applications and is suitable for use in medical, automotive, industrial, consumer, and other applications. It has a high bandwidth and low jitter, as well as built-in protection and diagnostic features.

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