Part Number: ISO1050DUBR

Manufacturer: Texas Instruments

Description: IC TXRX/ISO HALF 1/1 8SOP

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of ISO1050DUBR

Datasheet  ISO1050DUBR datasheet
Category Integrated Circuits (ICs)
Family Interface – Drivers, Receivers, Transceivers
Manufacturer Texas Instruments
Packaging Tape & Reel (TR)
Part Status Active
Type Transceiver
Protocol CAN
Number of Drivers/Receivers 1/1
Duplex Half
Receiver Hysteresis 150mV
Data Rate 1Mbps
Voltage – Supply 3 V ~ 5.5 V
Operating Temperature -55°C ~ 105°C
Mounting Type Surface Mount
Package / Case 8-SMD, Gull Wing
Supplier Device Package 8-SOP


The ISO1050DUBR is vital in Controller Area Network (CAN)-based industrial automation, control system, and other application domains. This high-tech, galvanically separated CAN transceiver is built to ISO11898-2’s exacting specifications, so it can transmit data securely and reliably in any environment. The important components of the ISO1050DUBR, including as its features, applications, and the benefits it delivers to many industries, will be covered in this in-depth overview.

Understanding the ISO1050DUBR

The ISO1050DUBR provides galvanic isolation and is a high-performance CAN transceiver. To get up to 2500 VRMS of isolation in the ISO1050DUBR model, a silicon oxide (SiO2) insulation layer is used to physically separate the logic input and output buffers. The ISO1050DW variant boasts an even more remarkable 5000 VRMS isolation capability. This is a crucial safety measure because noise currents from the data bus or other circuits can disrupt or even destroy sensitive hardware if they find their way into the local ground.

The ISO1050DUBR is a differential transmitter and receiver for the CAN bus and CAN controller, respectively, and it can handle signaling rates of up to 1 Mbps. For this reason, it’s well-suited for use in fast data transmission across a wide range of programs.

Key Features of ISO1050DUBR and ISO1050DW

ISO11898-2 Compliance

The ISO1050DUBR and ISO1050DW are both ISO11898-2 compliant. This assures that they meet the demanding CAN communication protocol standards, providing reliability and compatibility in CAN networks.

Impressive Isolation

ISO1050DW Isolation: 5000-VRMS

  • The ISO1050DW has an outstanding isolation capability of 5000 VRMS, making it appropriate for applications requiring extreme isolation, offering robust protection against ground loops and interference.

Isolation ISO1050DUBR: 2500-VRMS

ISO1050DUBR provides dependable 2500 VRMS isolation while maintaining a high level of galvanic isolation, making it suited for a wide range of applications.

Fail-Safe Outputs

Both versions include fail-safe outputs, which ensure that the outputs are guided to a safe state in the case of a failure or power outage. This is an important safety feature that prevents unexpected or harmful operation.

Low Loop Delay

The ISO1050DUBR and ISO1050DW both have minimal loop delays, with a typical delay of 150 ns. This low latency enables high-speed data transmission, which is critical for real-time applications.

Transient Immunity

With a typical transient immunity of 50 kV/s, these transceivers provide high immunity to transient voltage spikes, protecting CAN bus communication from electrical disruptions.

Bus-Fault Protection

With a wide operating range of -27 V to 40 V, these devices provide bus-fault protection, preserving data transmission integrity even in difficult electrical situations.

Driver (TXD) Dominant Time-Out Function

The presence of a driver dominant time-out function contributes to the network’s stability and reliability by avoiding indefinite domination of a single node on the CAN bus.

Versatile I/O Voltage Range

Both transceivers’ I/O voltage ranges support 3.3 V and 5 V microprocessors, making them highly adaptable and compatible with a wide range of systems and components.

Applications of ISO1050DUBR

Because of its strong architecture and versatile functionality, the ISO1050DUBR is used in a wide range of sectors. Here are a few examples of areas where it excels:

● Industrial Automation

The ISO1050DUBR is critical in industrial automation for enabling reliable communication between various components and systems, ensuring smooth and efficient operations.

● Building and Climate Control (HVAC) Automation

It aids in the efficient regulation of temperature and environmental conditions in building management and HVAC systems.

● Security Systems

For security applications, the transceiver allows secure communication between security equipment, hence improving premises security.

● Transportation

The ISO1050DUBR is used for data transfer and control in transportation systems such as automotive and aviation.

● Medical

It supports communication in many medical equipment, contributing to the effectiveness of healthcare systems.

● Telecom

Telecommunication systems rely on the ISO1050DUBR for efficient data transmission, which improves service quality.

Feature Description: CAN Bus States and Digital Inputs/Outputs in the ISO1050DUBR

The ISO1050DUBR, a galvanically isolated CAN transceiver, is designed with a number of key features to provide smooth and reliable communication within Controller Area Network (CAN) systems. This device’s CAN bus states and digital inputs/outputs are critical components. Let’s take a closer look at what these features entail:

CAN Bus States

Dominant State

  • The bus operates in two states in CAN communication: dominant and recessive. When the bus is actively driven by a driver, it enters a dominant condition, which is similar to logic low. This indicates that the signal on the bus is active and low, signifying binary 0.
  • When a driver actively places a signal on the bus, the dominant state is reached. It usually happens when a transmitting node asserts its message.

Recessive State

  • A recessive condition, on the other hand, occurs when the bus is not actively driven and is instead biased to a common mode voltage of VCC / 2. This biasing is accomplished in the receiver by employing high-resistance internal input resistors.
  • The recessive state corresponds to logic high, which indicates binary 1. It denotes the lack of an actively transmitting node.

Digital Inputs and Outputs

TXD (Input) and RXD (Output):

  • The TXD (Transmit Data) and RXD (Receive Data) pins on the ISO1050DUBR allow for digital input and output. These pins are very important in the communication process.
  • A 3.3-V or 5-V power supply can be used to power the isolated digital input and output side of the device. As a result, the digital inputs and outputs are 3.3-V and 5-V system compatible.
  • The TXD pin is used to send data to the CAN bus, while the RXD pin is used to receive data from the bus. These pins are critical for interfacing the host microprocessor with the CAN network.

Protection Features

Dominant Time-Out (DTO) TXD

  • The ISO1050DUBR’s TXD Dominant Time-Out (DTO) circuit is a critical safety feature. It prevents the local node from interfering with network communication in the event of a hardware or software failure where the TXD pin is held in a dominant condition (logic low) for a period longer than the time-out period tTXD_DTO.
  • When a falling edge is detected on the TXD pin, the TXD DTO circuit timer starts. The TXD DTO circuit shuts the CAN bus driver if no rising edge is sensed before the time-out period expires. This action frees up the bus for communication between network nodes.
  • To restore regular communication, a recessive signal (logic high) on the TXD pin must be noticed, successfully removing the TXD DTO condition. During a TXD dominant time-out, the receiver and the RXD pin continue to reflect the status of the CAN bus, and the bus Pins are biased to the recessive level.

In summary, the ISO1050DUBR’s CAN bus states, digital inputs, and protective features are critical in guaranteeing the dependable and resilient functioning of CAN communication networks. Understanding these factors is critical for efficient data transmission and fault tolerance in a variety of industrial and automotive applications.

In conclusion

The ISO1050DUBR and ISO1050DW are versatile and dependable CAN transceivers that are designed to meet the ISO11898-2 standard. These devices are well-equipped to assure the integrity and safety of data transfer in a variety of applications, thanks to their remarkable isolation capabilities, fail-safe outputs, minimal loop delays, transient immunity, bus-fault protection, and diverse I/O voltage ranges. Their compliance with a slew of safety certificates demonstrates their applicability for businesses where safety and dependability are critical.

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