Overview
The TJA1055T/3/CM,118 is a high-performance, enhanced fault-tolerant CAN (Controller Area Network) transceiver produced by NXP USA Inc. This component serves as the interface between the CAN protocol controller and the physical bus wires, making it essential for various automotive and industrial applications. It is designed to support low-speed CAN bus operations up to 125 kBd and is particularly suited for use in passenger cars.
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 | Single driver and receiver |
| Duplex | Half | Half-duplex operation |
| Protocol | CAN | Controller Area Network protocol |
| ESD Protection | ±8 kV (HBM), ±6 kV (IEC 61000-4-2) | Electrostatic Discharge protection for off-board pins |
Key Features
- Enhanced Fault Tolerance: The TJA1055T/3/CM,118 features automatic switching to single-wire mode in the event of bus failures, even when the CANH bus wire is short-circuited to VCC. It also supports transmission on either bus line if one of the wires is corrupted.
- Low Electromagnetic Emission (EME): Built-in slope control function and good matching of the CANL and CANH bus outputs reduce EME, allowing the use of unshielded twisted pairs or parallel pairs of wires for the bus lines.
- High Electromagnetic Immunity (EMI): The device offers high EMI in both normal operating mode and low power modes.
- Integrated Receiver Filters: Fully integrated receiver filters enhance signal processing and reduce noise.
- Transmit Data (TxD) Dominant Time-out Function: Prevents the bus from being driven permanently in the dominant state.
- Low Power Modes: Supports low current sleep mode and standby mode with wake-up via the bus lines.
- Bus Failure Management: Automatic reset to differential mode if bus failure is removed, and full wake-up capability during failure modes.
- Thermal and Transient Protection: Bus pins are short-circuit safe to battery and ground, and the device is thermally protected.
Applications
The TJA1055T/3/CM,118 is primarily used in automotive and industrial environments for CAN bus applications. It is suitable for low-speed CAN bus operations, such as those found in passenger cars, and can be used in various network configurations where fault tolerance and reliable data transmission are critical.
Q & A
- What is the primary function of the TJA1055T/3/CM,118?
The TJA1055T/3/CM,118 serves as the interface between the CAN protocol controller and the physical bus wires in a Controller Area Network (CAN).
- What is the operating voltage range of the TJA1055T/3/CM,118?
The operating voltage range is 4.75 V to 5.25 V.
- What is the maximum operating temperature of the TJA1055T/3/CM,118?
The maximum operating temperature is 125°C, with a range of -40°C to 125°C.
- Does the TJA1055T/3/CM,118 support low power modes?
Yes, it supports low current sleep mode and standby mode with wake-up via the bus lines.
- What kind of ESD protection does the TJA1055T/3/CM,118 offer?
The device offers ±8 kV ESD protection according to the Human Body Model (HBM) and ±6 kV according to IEC 61000-4-2 for off-board pins.
- How does the TJA1055T/3/CM,118 handle bus failures?
The device automatically switches to single-wire mode in the event of bus failures and supports transmission on either bus line if one of the wires is corrupted.
- What is the significance of the built-in slope control function?
The built-in slope control function reduces Electromagnetic Emission (EME) and allows the use of unshielded twisted pairs or parallel pairs of wires for the bus lines.
- Is the TJA1055T/3/CM,118 thermally protected?
Yes, the device is thermally protected and bus pins are short-circuit safe to battery and ground.
- What is the typical application area for the TJA1055T/3/CM,118?
The device is primarily used in automotive and industrial environments for CAN bus applications, particularly in low-speed operations.
- Does the TJA1055T/3/CM,118 support wake-up functionality during failure modes?
Yes, the device has full wake-up capability during failure modes.
