Overview
The TJA1051T/E/1118 is a high-speed Controller Area Network (CAN) transceiver produced by NXP USA Inc. This component is designed to provide an interface between a CAN protocol controller and the physical two-wire CAN bus, making it an essential part of high-speed CAN applications, particularly in the automotive industry. The TJA1051T/E/1118 is part of the third generation of high-speed CAN transceivers, offering significant improvements in ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance compared to earlier models.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC supply voltage | 4.5 | 5.5 | V | ||
| VIO supply voltage on pin VIO | 2.8 | 5.5 | V | ||
| Undervoltage detection voltage on pin VCC (Vuvd(VCC)) | 3.5 | 4.5 | V | ||
| Undervoltage detection voltage on pin VIO (Vuvd(VIO)) | 1.3 | 2.0 | 2.7 | V | |
| ICC supply current (Off mode, TJA1051T/E) | 1 | 5 | 8 | μA | |
| ICC supply current (Silent mode) | 0.1 | 1 | 2.5 | mA | |
| ICC supply current (Normal mode, bus recessive) | 2.5 | 5 | 10 | mA | |
| ICC supply current (Normal mode, bus dominant) | 20 | 50 | 70 | mA | |
| Virtual junction temperature (Tvj) | -40 | 150 | °C | ||
| Electrostatic discharge voltage (VESD) at pins CANH and CANL | IEC 61000-4-2 | -8 | +8 | kV |
Key Features
- Compliant with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
- Supports data rates up to 5 Mbit/s in the CAN FD fast phase.
- Suitable for 12 V and 24 V systems.
- Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI).
- High ElectroStatic Discharge (ESD) handling capability on the bus pins.
- Bus pins protected against transients in automotive environments.
- Transmit Data (TXD) dominant time-out function.
- Undervoltage detection on pins VCC and VIO.
- Thermally protected.
- Functional behavior predictable under all supply conditions.
- Transceiver disengages from the bus when not powered up (zero load).
- Supports Normal, Silent, and Off operating modes.
Applications
The TJA1051T/E/1118 is primarily used in high-speed CAN applications within the automotive industry. It is suitable for various nodes in Controller Area Network (CAN) systems that do not require a standby mode with wake-up capability via the bus. This includes but is not limited to:
- Automotive control systems.
- Vehicle networking.
- Industrial automation.
- Any high-speed CAN communication systems requiring robust EMC and ESD performance.
Q & A
- What is the primary function of the TJA1051T/E/1118?
The TJA1051T/E/1118 is a high-speed CAN transceiver that provides an interface between a CAN protocol controller and the physical two-wire CAN bus. - What standards does the TJA1051T/E/1118 comply with?
The TJA1051T/E/1118 complies with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards. - What are the supported data rates for the TJA1051T/E/1118?
The TJA1051T/E/1118 supports data rates up to 5 Mbit/s in the CAN FD fast phase. - What are the typical operating voltage ranges for the TJA1051T/E/1118?
The VCC supply voltage ranges from 4.5 V to 5.5 V, and the VIO supply voltage ranges from 2.8 V to 5.5 V. - What is the significance of the undervoltage detection feature?
The undervoltage detection feature ensures that the transceiver behaves predictably under all supply conditions, detecting undervoltage on pins VCC and VIO. - How does the TJA1051T/E/1118 protect against ESD and transients?
The TJA1051T/E/1118 has high ESD handling capability on the bus pins and protects against transients in automotive environments. - What are the operating modes supported by the TJA1051T/E/1118?
The TJA1051T/E/1118 supports Normal, Silent, and Off operating modes. - What is the purpose of the TXD dominant time-out function?
The TXD dominant time-out function prevents the transceiver from being stuck in a dominant state indefinitely. - Is the TJA1051T/E/1118 thermally protected?
Yes, the TJA1051T/E/1118 is thermally protected to ensure safe operation within a wide temperature range. - What types of systems is the TJA1051T/E/1118 suitable for?
The TJA1051T/E/1118 is suitable for 12 V and 24 V systems.
