Overview
The TJA1055T/3,518 is an enhanced fault-tolerant CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device is designed to serve as the interface between the CAN protocol controller and the physical bus wires in automotive applications. It is primarily intended for low-speed applications, supporting data rates up to 125 kBd, and is particularly suited for use in passenger cars. The TJA1055T/3,518 offers robust features such as differential transmit and receive capabilities, high electromagnetic immunity, and built-in slope control to reduce electromagnetic emissions.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 14-SOIC |
| Supply Voltage | 4.75 V to 5.25 V |
| Data Rate | Up to 125 kBd |
| Electrostatic Discharge (ESD) Protection | ±8 kV (Human Body Model), ±6 kV (IEC 61000-4-2) |
| Operating Temperature | -40°C to 125°C |
| Bus Pins Short-Circuit Protection | Safe to battery and ground |
| Low Power Modes | Low current sleep mode and standby mode with wake-up via bus lines |
Key Features
- Differential transmit and receive capability
- Supports unshielded bus wires with built-in slope control to reduce electromagnetic emissions
- High electromagnetic immunity in normal and low power modes
- Fully integrated receiver filters
- Transmit Data (TxD) dominant time-out function
- Automatic switching to single-wire mode in the event of bus failures
- Bus pins short-circuit safe to battery and ground
- Thermally protected and protected against transients in an automotive environment
- Low power modes with software accessible power-on reset flag
Applications
The TJA1055T/3,518 is designed for use in automotive systems, particularly in passenger cars. It is suitable for various low-speed CAN applications, including vehicle networking, diagnostics, and control systems. The device's robust fault-tolerant features make it ideal for environments where reliability and continuous operation are critical.
Q & A
- What is the primary function of the TJA1055T/3,518? The TJA1055T/3,518 serves as the interface between the CAN protocol controller and the physical bus wires in a Controller Area Network (CAN).
- What are the supported data rates for the TJA1055T/3,518? The device supports data rates up to 125 kBd.
- What type of package does the TJA1055T/3,518 come in? The device is packaged in a 14-SOIC (Small Outline Integrated Circuit).
- What is the operating voltage range for the TJA1055T/3,518? The operating voltage range is 4.75 V to 5.25 V.
- Does the TJA1055T/3,518 have ESD protection? Yes, it has ±8 kV ESD protection according to the Human Body Model and ±6 kV according to IEC 61000-4-2.
- What are the low power modes supported by the TJA1055T/3,518? The device supports low current sleep mode and standby mode with wake-up via the bus lines.
- Is the TJA1055T/3,518 protected against bus failures? Yes, it has automatic switching to single-wire mode in the event of bus failures and is short-circuit safe to battery and ground.
- What are the key features for electromagnetic compatibility? The device has built-in slope control to reduce electromagnetic emissions and high electromagnetic immunity in normal and low power modes.
- Can the TJA1055T/3,518 operate in harsh automotive environments? Yes, it is thermally protected and protected against transients in an automotive environment.
- How does the TJA1055T/3,518 handle unpowered nodes on the bus? An unpowered node does not disturb the bus lines, and the device has microcontroller interface without reverse current paths if unpowered.
