Overview
The TJA1055T,512 is an enhanced fault-tolerant CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device is primarily designed for low-speed applications up to 125 kBd, particularly in passenger cars. It serves as the interface between the CAN protocol controller and the physical wires of the CAN bus, providing differential transmit and receive capabilities. The TJA1055T,512 is notable for its robust fault-tolerant features, including automatic switching to single-wire mode in the event of bus failures and support for transmission on either bus line if one wire is corrupted.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 14-SOIC (0.154", 3.90mm Width) |
| Supply Voltage | 4.75 V ~ 5.25 V |
| Operating Temperature | -40°C ~ 125°C |
| Number of Drivers/Receivers | 1/1 |
| Mounting Type | Surface Mount |
| Bus Speed | Up to 125 kBd |
| Bus Failure Management | Automatic switching to single-wire mode, supports ground offset voltages up to 1.5 V |
| Protection Features | Bus pins short-circuit safe to battery and ground, thermally protected |
Key Features
- Enhanced fault-tolerant CAN transceiver with automatic switching to single-wire mode in the event of bus failures.
- Supports transmission capability on either bus line if one of the wires is corrupted.
- Full wake-up capability during failure modes.
- Bus pins are short-circuit safe to battery and ground, and thermally protected.
- Local wake-up through pin WAKE detected by a rising or falling edge.
- Compatibility with 3 V interfacing with microcontrollers (e.g., TJA1055T/3).
- Limited rise and fall slopes to reduce EME, allowing the use of unshielded twisted pairs or parallel pairs of wires for the bus lines.
Applications
The TJA1055T,512 is primarily used in automotive applications, particularly in passenger cars, for low-speed CAN bus communications. It is suitable for various in-vehicle network systems where robust fault tolerance and reliable communication are critical.
Q & A
- What is the primary application of the TJA1055T,512?
The TJA1055T,512 is primarily intended for low-speed CAN bus applications in passenger cars. - What are the key fault-tolerant features of the TJA1055T,512?
The device automatically switches to single-wire mode in the event of bus failures and supports transmission on either bus line if one wire is corrupted. - What is the operating temperature range of the TJA1055T,512?
The operating temperature range is -40°C to 125°C. - What type of package does the TJA1055T,512 come in?
The device comes in a 14-SOIC package. - What is the supply voltage range for the TJA1055T,512?
The supply voltage range is 4.75 V to 5.25 V. - Does the TJA1055T,512 support wake-up functionality?
Yes, it supports local wake-up through the WAKE pin. - What protection features does the TJA1055T,512 have?
The device has bus pins that are short-circuit safe to battery and ground, and it is thermally protected. - Can the TJA1055T,512 be used with 3 V microcontrollers?
Yes, versions like TJA1055T/3 support 3 V interfacing with microcontrollers. - How does the TJA1055T,512 reduce electromagnetic interference (EMI)?
The device reduces EMI by limiting the rise and fall slopes, allowing the use of unshielded twisted pairs or parallel pairs of wires for the bus lines. - What is the maximum bus speed supported by the TJA1055T,512?
The maximum bus speed supported is up to 125 kBd.
