ST485BDR Allicdata Electronics

ST485BDR Integrated Circuits (ICs)

Allicdata Part #:

497-3733-2-ND

Manufacturer Part#:

ST485BDR

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: STMicroelectronics
Short Description: IC TXRX 5V RS485/422 LP 8-SOIC
More Detail: 1/1 Transceiver Half RS422, RS485 8-SO
DataSheet: ST485BDR datasheetST485BDR Datasheet/PDF
Quantity: 1000
Stock 1000Can Ship Immediately
Specifications
Series: --
Packaging: Tape & Reel (TR) 
Part Status: Active
Type: Transceiver
Protocol: RS422, RS485
Number of Drivers/Receivers: 1/1
Duplex: Half
Receiver Hysteresis: 70mV
Data Rate: 2.5Mbps
Voltage - Supply: 4.75 V ~ 5.25 V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package: 8-SO
Base Part Number: ST485
Description

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Introduction

ST485BDR (RS-485 Bidirectional Communication Driver/Receiver) is a device used to allow digital data transmission over differential long distance communication networks. It is designed to provide robust and reliable data communications in real-world industrial communication networks and is suitable for communication using the Serial Peripheral Interface (SPI). ST485BDRs can be utilized in RS-485 networks up to several meters in length and up to 1 Mbps of data rate.


Application Field

The ST485BDR is a great choice for any kind of full-duplex long-distance data transmission applications, such as industrial automation systems, remote power distribution systems, point-of-sale systems, medical imaging systems, and various data acquisition systems. It also can be used as a repeater to extend the communication distance between different units and to ensure robust communication.

The ST485BDR can be utilized in RS-485 networks up to several meters in length and up to 1 Mbps of data rate. It offers comparison-based output monitoring, allowing it to detect and eliminate any multi-drop communication errors.

The ST485BDR is also suitable for communications using the Serial Peripheral Interface (SPI), providing a Slave/Master interface with up to 8-bit data format, plus an integrated clock generator. This can be used to simplify complex protocols, such as the Modbus protocol.


Working Principle

The ST485BDR operates on the principle of voltage level shifting in order to convert a single-ended signal (RS-232) into a differential signal (RS-485). The device has a differential driver output and a differential receiver input, which can be used for full-duplex communication.

The driver output is controlled by a logic low/high input signal. When the input signal is logic low, the driver output is enabled and the differential signal is outputted. When the input signal is logic high, the driver output is disabled and the differential signal is inhibited.

The receiver input is used to detect the differential signal and convert it back into a logic signal. The receiver input is designed to reject common mode spikes and noise while accepting only valid RS-485 signals.


Conclusion

The ST485BDR is a great choice for any kind of full-duplex long-distance data transmission applications. It can be used for RS-485 networks up to several meters in length and up to 1 Mbps of data rate. It also can be used as a repeater to extend the communication distance between different units and to ensure robust communication. The device operates on the principle of voltage level shifting to covert a single-ended signal into a differential signal, and it is designed to reject common mode spikes and noise while only accepting valid RS-485 signals.

The specific data is subject to PDF, and the above content is for reference

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