Overview
The ISO1044BD is a galvanically-isolated controller area network (CAN) transceiver produced by Texas Instruments. It meets the specifications of the ISO 11898-2:2016 standard and is designed to support both classic CAN and CAN FD (flexible data rate) protocols. The device features a small SOIC-8 (D) package, significantly reducing the solution size compared to traditional approaches using optocouplers. It offers robust protection and isolation, making it suitable for a wide range of industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC1 Supply Voltage | 1.71 to 5.5 | V |
| VCC2 Supply Voltage | 4.5 to 5.5 | V |
| Bus Fault Protection Voltage | ±58 | V |
| Common-Mode Voltage Range | ±12 | V |
| IEC ESD Tolerance on Bus Pins | ±8 kV | kV |
| HBM ESD Tolerance on Bus Pins | ±10 kV | kV |
| Data Rate (Classic CAN) | Up to 1 Mbps | Mbps |
| Data Rate (CAN FD) | Up to 5 Mbps | Mbps |
| Ambient Temperature Range | -40°C to +125°C | °C |
| Package Type | SOIC-8 (D) |
Key Features
- Meets the ISO 11898-2:2016 physical layer standard
- Supports classic CAN up to 1 Mbps and CAN FD up to 5 Mbps
- DC Bus Fault Protection Voltage: ±58 V
- IEC ESD tolerance on bus pins: ±8 kV, HBM ESD tolerance on bus pins: ±10 kV
- Driver dominant time out (TXD DTO) and undervoltage protection on VCC1 and VCC2
- Common-mode voltage range: ±12 V
- Ideal passive, high impedance bus terminals when unpowered
- High CMTI: 85 kV/µs minimum
- Supports 1.8-V, 2.5-V, 3.3-V, and 5.0-V logic interface to the CAN controller
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, surge, and emissions compliance
- Safety-related certifications including VDE, UL, and IEC standards
Applications
- AC and servo drives
- Solar inverters
- PLC and DCS communication modules
- Elevators and escalators
- Industrial power supplies
- Battery charging and management systems
Q & A
- What is the ISO1044BD used for?
The ISO1044BD is a galvanically-isolated CAN transceiver used for communication in industrial and automotive applications, ensuring high reliability and protection against electrical noise and faults.
- What are the key standards it complies with?
The ISO1044BD complies with the ISO 11898-2:2016 standard for CAN physical layer and various safety standards such as VDE, UL, and IEC.
- What data rates does it support?
The device supports classic CAN up to 1 Mbps and CAN FD up to 5 Mbps.
- What is the operating temperature range?
The device operates over an ambient temperature range of -40°C to +125°C.
- What kind of protection does it offer?
The ISO1044BD offers DC bus fault protection, ESD protection, undervoltage protection, and robust EMC.
- What package type is it available in?
The device is available in a small SOIC-8 (D) package.
- What are some common applications of the ISO1044BD?
Common applications include AC and servo drives, solar inverters, PLC and DCS communication modules, elevators and escalators, industrial power supplies, and battery charging and management systems.
- How does it enhance electromagnetic compatibility?
The device enhances EMC through system-level ESD, EFT, surge, and emissions compliance.
- What is the common-mode voltage range?
The common-mode voltage range is ±12 V.
- Does it support multiple logic voltage levels?
Yes, it supports 1.8-V, 2.5-V, 3.3-V, and 5.0-V logic interfaces to the CAN controller.
