Overview
The TJA1055T/CM,118 is an enhanced fault-tolerant CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device 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 and other automotive environments. It offers improved performance and reliability compared to its predecessors, such as the TJA1054 and TJA1054A, with features like enhanced ElectroStatic Discharge (ESD) protection, lower current consumption in sleep mode, and wake-up signaling on RXD and ERR without VCC active.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | Surface Mount package |
| Voltage - Supply | 4.75 V ~ 5.25 V | Operating voltage range |
| Operating Temperature | -40°C ~ 125°C | Temperature range for operation |
| Number of Drivers/Receivers | 1/1 | One transmitter and one receiver |
| Protocol | CAN | Controller Area Network protocol |
| Data Rate | Up to 125 kBd | Maximum data rate supported |
| ESD Protection | ±8 kV (HBM), ±6 kV (IEC 61000-4-2) | ElectroStatic Discharge protection levels |
Key Features
- Optimized for Low-Speed CAN Applications: Designed for low-speed CAN applications up to 125 kBd in passenger cars.
- Improved ESD Performance: Enhanced ElectroStatic Discharge protection with ±8 kV (HBM) and ±6 kV (IEC 61000-4-2) for off-board pins.
- Low Power Modes: Low current sleep mode and standby mode with wake-up via the bus lines.
- Bus Failure Management: Automatic switching to single-wire mode in the event of bus failures, even when the CANH bus wire is short-circuited to VCC.
- High EMI Immunity: Very high ElectroMagnetic Immunity (EMI) in normal operating mode and in low power modes.
- Transmit Data (TxD) Dominant Time-Out Function: Ensures proper transmission even in error conditions.
- Wake-Up Signaling: Wake-up signaling on RXD and ERR without VCC active.
- Support for Unshielded Bus Wires: Supports unshielded bus wires with built-in slope control function to reduce ElectroMagnetic Emission (EME).
Applications
The TJA1055T/CM,118 is primarily used in automotive and industrial environments for CAN-bus applications. It is suitable for low-speed communication in passenger cars and can be integrated into various automotive systems such as engine control units, transmission control units, and other vehicle network systems. Additionally, it can be used in industrial automation and control systems where reliable and fault-tolerant CAN communication is required.
Q & A
- What is the primary function of the TJA1055T/CM,118?
The TJA1055T/CM,118 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 compared to its predecessors?
The TJA1055T offers improved ESD performance, lower current consumption in sleep mode, wake-up signaling on RXD and ERR without VCC active, and enhanced bus failure management.
- What is the maximum data rate supported by the TJA1055T/CM,118?
The device supports data rates up to 125 kBd.
- What type of ESD protection does the TJA1055T/CM,118 offer?
The device provides ±8 kV (HBM) and ±6 kV (IEC 61000-4-2) ESD protection for off-board pins.
- Can the TJA1055T/CM,118 operate with unshielded bus wires?
Yes, it supports unshielded bus wires with built-in slope control to reduce ElectroMagnetic Emission (EME).
- What are the operating temperature ranges for the TJA1055T/CM,118?
The device operates within a temperature range of -40°C to 125°C.
- Does the TJA1055T/CM,118 support wake-up signaling without VCC active?
Yes, it provides wake-up signaling on RXD and ERR without VCC active.
- How does the TJA1055T/CM,118 handle bus failures?
The device automatically switches to single-wire mode in the event of bus failures and can handle ground offset voltages up to 1.5 V.
- Is the TJA1055T/CM,118 compliant with environmental regulations?
Yes, it is compliant with EU RoHS, ELV, and China RoHS directives.
- What is the package type of the TJA1055T/CM,118?
The device is packaged in a 14-SOIC (0.154", 3.90mm Width) surface mount package.
