SP491ECN-L/TR

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The SP491ECN-L/TR is a low-power EIA-232 transceiver that provides effective bidirectional data flow between a controller and a terminal or other peripheral device. This device is a popular component in communication interface designs, providing the necessary interface between controller devices, such as microcontrollers, and the data line.

Application Field

The SP491ECN-L/TR is designed primarily for point-to-multipoint and multipoint-to-point applications enabling eight receivers and eight drivers. It is widely used in many data communication applications, such as serial interfaces in computers and other devices, modems, computer networks, and terminal controllers. Its main task is to transmit data through a serial interface and enable a variety of serial devices to communicate via the interface.

Work Principle

The SP491ECN-L/TR is widely used to provide differential signaling from a single power supply. It has two signal inputs, one data input and one data output. The signal outputs (drivers) can be used to produce an output signal in response to an input signal on the signal input. The data input is fully differential, allowing the signal to be transmitted and received in both directions. This differential data is then converted to single-ended EIA-232 signaling on the data output. The signal is transmitted via EIA-232 protocol, which ensures the accuracy of the data transmission.

The device is also equipped with several protection features, such as over-voltage protection and over-current protection. With these features, the device is able to safely isolate itself from external voltage and current sources and to operate reliably. It also ensures that the transmitted signal does not exceed the range of the EIA-232 protocol specifications.

The SP491ECN-L/TR transceiver provides the necessary signal levels to enable high-speed serial data transmission. It works in combination with other components, such as receivers, transceivers and drivers, to ensure reliable data communication. The device is designed to operate within an operating voltage range of 3.3 to 5.5V and is capable of transferring data at maximum speeds of up to 250Kbps.

Conclusion

The SP491ECN-L/TR is a low-power, highly reliable EIA-232 transceiver designed for point-to-multipoint and multipoint-to-point communication, where both data and differential signaling need to be converted from one format to the other. It is an effective component in communication interface designs, providing the necessary interface between controller devices, such as microcontrollers, and the data line. The device is capable of providing data transmission reliability and accuracy due to its built-in protection features, such as over-voltage protection and over-current protection. It is an ideal solution for applications requiring high-speed data transmission or conversion between two or more formats.

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