DS485TN/NOPB

DS485TN/NOPB is an interface-driver, receiver, and transceiver device manufactured by Texas Instruments. It is a 5-pin differential driver/receiver device intended for bidirectional data communication on multipoint communication networks. The device has two operating criteria, one for transmitting and one for receiving, thus enabling full duplex communication without additional components.

Application Fields

The main application fields for the DS485TN/NOPB are the industrial control, building automation, and medical equipment. The device is a powerful, cost-efficient transceiver system due to its easy integration, degree of customization, and substantial noise immunity thanks to its differential signaling. It is also useful in fieldbus applications such as Modbus, Profibus, FF, and HART.

Working Principle

The DS485TN/NOPB features a dual transmitter and dual receiver pair that allows for both full-duplex and half-duplex communication. The transmitter is designed to convert TTL level data into the RS485 signal levels while the receiver converts the RS-485 signal levels back to TTL levels. It also offers high speed data transmission, up to 1 Mbps, and several built-in protection mechanisms.

It includes two on-chip transceivers that allow for full duplex communication without the need for additional components. The transceiver utilizes the power of differential signaling and has the ability to detect and remove noise from the system. The device also includes an internal Schmitt trigger, which helps to reduce jitter, and a slew rate limited driver for improved signal integrity.

The DS485TN/NOPB can be interfaced to other ICs, modules, and systems by utilizing the five-pin differential signaling inputs/outputs. The device can be integrated with other devices and systems that rely on the same data transmission technology. It is also ideal for applications where the transmission rates are low and the distance between the transceiver and the receiver is to be kept short.

Conclusion

The DS485TN/NOPB Interface Driver, Receiver, and Transceiver is a powerful, versatile, and cost-efficient solution for applications requiring full duplex or half-duplex data transmission, including applications in industrial control, building automation, and medical equipment. The device also offers high speed data transmission, robust noise immunity, and low power usage, making it a great choice for fieldbus applications.