DS36954VX/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Last Time Buy
Type:	Transceiver
Protocol:	RS422, RS485
Number of Drivers/Receivers:	4/4
Duplex:	Half
Receiver Hysteresis:	60mV
Data Rate:	--
Voltage - Supply:	4.75 V ~ 5.25 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	20-LCC (J-Lead)
Supplier Device Package:	20-PLCC (9x9)
Base Part Number:	DS36954

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DS36954VX/NOPB: Application Field and Working Principle

Introduction of DS36954VX/NOPB

DS36954VX/NOPB is a monolithic quadruple non-inverting EIA/TIA-485 transceiver, compliant to ISO8482-2:1993 and TIA-485-A. It is designed for use in multipoint bus transmission systems like RS-485, which are intended for operation in industrial environment or similar. This component can be used in either half- or full-duplex operation mode, making it capable of transmitting and receiving simultaneously. Its output drivers have a table for matching load capacitance to speed of transmission, so the external connection to this component does need to match the capacitance of the bus. It also contains a propagation delay and frequency compensation, making it an optimal transceiver for long distance connections.

Application Field

Due to its features of compliance to ISO8482-2:1993 and TIA-485-A, DS36954VX/NOPB can be used in a wide range of applications.

Industrial Automation

Modern efficient and safe industrial automation processes demand more and more of sophisticated data communication protocols in order to keep the system reliable. As an industry standard for serial data communication, RS-485 plays an indispensable role in industrial automation. DS36954VX/NOPB transceiver chip supplies the user with easy and optimized implementation of RS-485. It can be used in applications such as networking, motor control and home automation.

Barebone Computers

A large majority of embedded applications require some sort of data connection between nodes, e.g. for control and for synchronizing data. High speed serial communication is the ideal solution for this, with RS-485 being the communication protocol of choice for many. DS36954VX/NOPB offers a convenient transceiver option for this kind of connection. It is a cost-efficient and reliable chip, making it ideal in mission-critical barebone computers and appliances.

Lighting Control Systems

RS-485 is heavily used in automatic lighting control systems in order to save energy and employed in applications such as street lighting control and stage lighting. The low consumption and low voltage features of DS36954VX/NOPB transceiver chip makes it a very feasible choice for connection in such kind of application.

Security and Surveillance Systems

DS36954VX/NOPB transceiver chips are also widely used in surveillance systems and smart home security. It offers support for up to 24 nodes on a single RS-485 network, which is perfect for residential or commercial surveillance systems. Thanks to its data transmission rate up to 10Mbps, the chip can even be used for HD security cameras and other high definition video equipment.

Working Principle

The DS36954VX/NOPB device contains 4 identical non-inverting EIA/TIA-485 transceivers. The devices is divided equally into a receiver and a transmitter section. Each section has as its main task to convert the input/ output signals to the correct levels and format in order to allow communication between nodes.

Receiver Section

The receiver section contains 4 line receivers which are designed to convert a current differential input information stream into a single-ended TTL-compatible output signal. The receiver section has the ability to detect and identify line states between 0-5V and -5V. It is optimized for half-duplex and full-duplex serial data communication.

Transmitter Section

The transmitter section includes 4 line drivers, which provide non-inverting EIA/TIA-485 compliant signals for RS-485 communications. Its output drivers are configured for reduced level of reflections, so that the line capacitance does not need to match the bus capacitance in order to achieve successful data transmission. It also provides a propagation delay and frequency compensation, reducing the error rate and increasing the speed of data transmission.

Conclusion

The DS36954VX/NOPB is an efficient and reliable transceiver chip which can be used for multiple applications such as industrial automation, barebone computers, lighting control systems and security and surveillance systems. Its receiver section can detect and identify line states between 0-5V and -5V, and its transmitter section provides non-inverting EIA/TIA-485 compliant signals for RS-485 communications. Its output drivers are configured for reduced level of reflections, which reduce the error rate and increase the speed of data transmission. Overall, the DS36954VX/NOPB is an excellent choice for RS-485 transceiver applications.

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