MAX490CSA

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MAX490CSA is an integrated logic circuit designed specifically for electro-optical and multiple applications. The device contains four logic components—two drivers, two receivers, and four transceivers.The MAX490CSA is a dual-channel, full-duplex transceiver, providing two-way communication between compatible logic families, such as TTL/CMOS and ECU logic. For example, the MAX490CSA can be used to provide a two-way optically-isolated data link between two electronics systems with different logic families.The drivers are used to convert the logic level of the input data stream (TTL or CMOS) to levels that can be transmitted optically on optical fibers or through air. The receivers are used to convert the optically received signals to logic levels compatible with the logic families. The transceivers are used to combine the drivers and detectors into a single package.The main application field of the MAX490CSA is in electrically isolated interconnections that require data transfer rate of up to 10 Mbps. It can be used in isolated sensory systems, isolated data communications, isolated control applications and isolated instrumentation systems. The device operates on a single +5V DC power supply, and a wide variety of TTL/CMOS logic levels is supported.To use the MAX490CSA, simply connect the two sides of the transceiver together and then connect one side to the logic source and the other side to the device needing logic input. The logic level of each side can be configured with the use of system-level configuration bits. The logic input to be transmitted is applied to the input pins and the transmitted signal is received at the output pins. The device is protected against input-to-output shorts and overvoltage conditions.The working principle for the MAX490CSA is basically the same for all transceivers. It has two distinct sections, the driver and the receiver. The driver is used to convert the logic level of the input data stream to that of the output. The receiver section is used to convert the optically received signal to logic levels compatible with the input logic. The device contains logic gates and other components that facilitate the data transfer between the two logic families. The device is also protected against input-to-output shorts and over-voltage conditions.In summary, the MAX490CSA is a dual-channel, full-duplex transceiver, providing two-way communication between compatible logic families, such as TTL/CMOS and ECU logic. It is mainly used for electrically isolated interconnections that require data transfer rate of up to 10 Mbps. The MAX490CSA is protected against input-to-output shorts and overvoltage conditions and requires only a single +5V DC power supply.

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