Overview
The TJA1042T118, produced by NXP USA Inc., is a high-speed CAN (Controller Area Network) transceiver designed to provide an interface between a CAN protocol controller and the physical two-wire CAN bus. This component is part of the third generation of high-speed CAN transceivers from NXP, offering significant improvements in electromagnetic compatibility (EMC), electrostatic discharge (ESD) performance, and low-power operation. It is particularly suited for high-speed CAN applications in the automotive industry, supporting data rates up to 5 Mbit/s in the CAN FD fast phase.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC supply voltage | 4.5 | 5.5 | V | ||
| Vuvd(VCC) undervoltage detection voltage | 3.5 | 4.5 | V | ||
| ICC supply current (Standby mode) | TJA1042T; includes IIO; VTXD = VIO - 10 | 15 | μA | ||
| ICC supply current (Normal mode, recessive) | VTXD = VIO | 2.5 | 5 | 10 | mA |
| ICC supply current (Normal mode, dominant) | VTXD = 0 V | 20 | 45 | 70 | mA |
| VIO supply voltage | 2.8 | 5.5 | V | ||
| Operating temperature range | -40 | 150 | °C | ||
| Package type | SO8 and leadless HVSON8 (3.0 mm × 3.0 mm) |
Key Features
- Fully compliant with ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5, and SAE J1939-14 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).
- Variants with a VIO pin allow for direct interfacing with microcontrollers having supply voltages from 3.3 V to 5 V.
- Shorter propagation delay on TJA1042B and TJA1042C variants supports larger network topologies.
- SPLIT voltage output for stabilizing the recessive bus level.
- Ideal passive behavior to the CAN bus when the supply voltage is off.
- A very low-current Standby mode with bus wake-up capability.
Applications
The TJA1042T118 is primarily used in high-speed CAN applications within the automotive industry. It is suitable for various automotive systems that require reliable and efficient communication over the CAN bus, including:
- Vehicle control systems.
- Infotainment systems.
- Advanced driver-assistance systems (ADAS).
- Automotive networking and communication systems.
Q & A
- What is the primary function of the TJA1042T118?
The TJA1042T118 is a high-speed CAN transceiver that provides an interface between a CAN protocol controller and the physical two-wire CAN bus.
- What are the supported data rates for the TJA1042T118?
The TJA1042T118 supports data rates up to 5 Mbit/s in the CAN FD fast phase.
- What are the operating voltage ranges for the VCC and VIO pins?
The VCC supply voltage range is 4.5 V to 5.5 V, and the VIO supply voltage range is 2.8 V to 5.5 V.
- What is the operating temperature range of the TJA1042T118?
The operating temperature range is -40°C to 150°C.
- What types of packages are available for the TJA1042T118?
The component is available in SO8 and leadless HVSON8 (3.0 mm × 3.0 mm) packages.
- Does the TJA1042T118 support low-power modes?
Yes, it features a very low-current Standby mode with bus wake-up capability.
- Is the TJA1042T118 compliant with industry standards?
Yes, it is fully compliant with ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5, and SAE J1939-14 standards.
- What are the key benefits of the TJA1042T118 in terms of EMC and ESD?
The component offers improved electromagnetic compatibility (EMC) and electrostatic discharge (ESD) performance.
- Can the TJA1042T118 be used with microcontrollers having different supply voltages?
Yes, variants with a VIO pin can be interfaced directly with microcontrollers having supply voltages from 3.3 V to 5 V.
- What is the purpose of the SPLIT voltage output on the TJA1042T118?
The SPLIT voltage output is used for stabilizing the recessive bus level.
