Overview
The TJA1055T/1J, produced by NXP USA Inc., is an enhanced fault-tolerant CAN (Controller Area Network) transceiver. It serves as the interface between the CAN protocol controller and the physical bus wires, primarily intended for low-speed applications up to 125 kBd in passenger cars. This device is designed to provide differential transmit and receive capabilities, with the ability to switch to single-wire transmission modes in error conditions. It is an improved version of the TJA1054 and TJA1054A, offering enhanced ElectroStatic Discharge (ESD) performance, lower current consumption in sleep mode, and wake-up signalling on RXD and ERR without VCC active.
Key Specifications
| Parameter | Value |
|---|---|
| Interface | CAN |
| No of Functions / Channels | 1 |
| Data Rate-Max | 125 kBd |
| Supply Voltage-Nom | 4.75V to 5.25V |
| Package Style | SOIC-14 |
| Mounting Method | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Lead Free Status / RoHS Status | ROHS3 Compliant |
Key Features
- Optimized for in-car low-speed communication up to 125 kBd.
- Pin-to-pin compatible with TJA1054 and TJA1054A.
- Supports up to 32 nodes on the bus.
- Supports unshielded bus wires.
- Very low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI).
- Fully integrated receiver filters and transmit data (TxD) dominant time-out function.
- High ESD robustness: ±8 kV HBM and ±6 kV IEC 61000-4-2 for off-board pins.
- Automatic switching to single-wire mode in the event of bus failures.
- Bus pins short-circuit safe to battery and ground, thermally protected.
- Low current sleep mode and standby mode with wake-up via the bus lines.
Applications
The TJA1055T/1J is primarily used in automotive applications, particularly in passenger cars, for low-speed CAN communication. It is suitable for various in-car communication systems that require reliable and fault-tolerant data transmission. The device's ability to handle bus failures and its high EMI immunity make it an ideal choice for harsh automotive environments.
Q & A
- What is the primary function of the TJA1055T/1J? The TJA1055T/1J serves as the interface between the CAN protocol controller and the physical bus wires in a Controller Area Network (CAN).
- What are the key improvements of the TJA1055T/1J over its predecessors? The TJA1055T/1J offers improved ESD performance, lower current consumption in sleep mode, and wake-up signalling on RXD and ERR without VCC active.
- What is the maximum data rate supported by the TJA1055T/1J? The TJA1055T/1J supports a maximum data rate of 125 kBd.
- What type of package does the TJA1055T/1J come in? The TJA1055T/1J comes in a SOIC-14 package.
- Is the TJA1055T/1J RoHS compliant? Yes, the TJA1055T/1J is ROHS3 compliant.
- What is the operating temperature range of the TJA1055T/1J? The operating temperature range is -40°C to 125°C.
- How many nodes can be connected using the TJA1055T/1J? Up to 32 nodes can be connected.
- Does the TJA1055T/1J support single-wire transmission modes? Yes, it supports single-wire transmission modes in the event of bus failures.
- What are the ESD protection levels for the TJA1055T/1J? The device offers ±8 kV HBM and ±6 kV IEC 61000-4-2 ESD protection for off-board pins.
- Can the TJA1055T/1J wake up from sleep mode via the bus lines? Yes, it can wake up from sleep mode via the bus lines.
