IL3585E

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The IL3585E is an optically isolated digital isolator that deals with a variety of signal isolation applications. It is a key component of many different types of industrial automation and medical electronics applications, as well as many other embedded or stand-alone systems. The IL3585E is a single-channel device that offers a guaranteed maximum data rate of 1 Mbps, and has a maximum isolation rating of 5 KV in a low-cost SOIC-8 Package.

The IL3585E application field and working principle involve the transmission of digital signal from one side (sender) to the other side (receiver) via an optocoupler, while isolating the both sides from each other to provide electrical noise immunity and galvanic isolation. It operates in a variety of ways depending on the input and output types. It can receive TTL/CMOS logic signals from the transmitting side, convert them into an optical signal, pass the light through an optical channel, and recapture the light back into an electrical signal on the receiving side.

The basic working principle of the IL3585E is that it uses an infrared LED as the transmitter and an integrated detector as the receiver. When a digital signal is applied to the device\'s digital logic inputs, two associated photodiodes detect the signal and produce a current proportional to the logic level. The current is converted to light by an infrared LED, propagated through an optical path, and detected by a high-sensitivity photo-detector. The signal is then converted back to the original logic level and outputted.

The IL3585E features high-voltage electrostatic discharge (HV-ESD) protection, with a maximum withstand voltage of 8 KV. It also has an unlimited mean time between failure (MTBF) guaranteeing long-term reliability. Additionally, its 4.5 cm² ultra-small package helps reduce space requirements on the circuit board. It also provides a 3.3V or 5V single-supply operation, as well as a -40°C to 85°C operating temperature range.

The IL3585E provides high-speed signal transmission along with a high level of isolation between the transmit and receive circuits. It is designed for use in systems operating in Industrial Automation, Medical Equipment, Home Appliances, Building Automation, and Automotive Electronics. Its wide operating temperature range, unlimited MTBF, and small size make it well-suited for use in embedded or stand-alone projects.

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