Overview
The TJA1040T, produced by NXP USA Inc., is a high-speed CAN (Controller Area Network) transceiver designed to interface between the CAN protocol controller and the physical bus. It is primarily intended for high-speed applications, particularly in the automotive sector, such as in passenger cars. The device is known for its low current consumption and remote wake-up capability, making it an excellent choice for nodes that can be in power-down or standby mode in partially powered networks.
Key Specifications
| Parameter | Conditions | Min. | Max. | Unit | |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | Operating Range | 4.75 | - | 5.25 | V |
| ICC (Supply Current) | Standby Mode | 5 | 10 | 15 | µA |
| ICC (Supply Current) | Normal Mode, Recessive | 2.5 | 5 | 10 | mA |
| ICC (Supply Current) | Normal Mode, Dominant | 5 | 10 | - | mA |
| VCANH (DC Voltage on Pin CANH) | No Time Limit | -27 | - | +40 | V |
| VCANL (DC Voltage on Pin CANL) | No Time Limit | -27 | - | +40 | V |
| VSPLIT (DC Voltage on Pin SPLIT) | No Time Limit | -27 | - | +40 | V |
| tPD(TXD-RXD) (Propagation Delay TXD to RXD) | VSTB = 0 V | 40 | - | 255 | ns |
| Tvj (Virtual Junction Temperature) | - | -40 | - | +150 | °C |
Key Features
- Fully compatible with the ISO 11898 standard.
- High-speed operation up to 1 MBaud.
- Very low-current standby mode with remote wake-up capability via the bus.
- Very low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI).
- Differential receiver with high common-mode range.
- Transceiver disengages from the bus in unpowered state (zero load).
- Input levels compatible with 3.3 V and 5 V devices.
- Voltage source for stabilizing the recessive bus level if split termination is used.
- At least 110 nodes can be connected.
- Transmit Data (TXD) dominant time-out function.
- Bus pins protected against transients).
Applications
The TJA1040T is primarily used in high-speed CAN applications, particularly in the automotive sector. It is suitable for use in passenger cars and other vehicles where reliable and efficient CAN communication is critical. The device's low power consumption and remote wake-up capability make it an excellent choice for nodes that can be in power-down or standby mode in partially powered networks.
Q & A
- What is the primary function of the TJA1040T?
The TJA1040T is a high-speed CAN transceiver that interfaces between the CAN protocol controller and the physical bus.
- What is the maximum data rate supported by the TJA1040T?
The TJA1040T supports data rates up to 1 MBaud.
- What are the key features of the TJA1040T's standby mode?
The standby mode of the TJA1040T features very low current consumption and remote wake-up capability via the bus.
- Is the TJA1040T compatible with the ISO 11898 standard?
Yes, the TJA1040T is fully compatible with the ISO 11898 standard.
- What is the operating supply voltage range for the TJA1040T?
The operating supply voltage range for the TJA1040T is 4.75 V to 5.25 V.
- How many nodes can be connected using the TJA1040T?
At least 110 nodes can be connected using the TJA1040T.
- What kind of protection does the TJA1040T offer for its bus pins?
The bus pins of the TJA1040T are protected against transients.
- What is the typical supply current in standby mode for the TJA1040T?
The typical supply current in standby mode for the TJA1040T is 10 µA.
- What is the propagation delay from TXD to RXD for the TJA1040T?
The propagation delay from TXD to RXD for the TJA1040T is between 40 ns and 255 ns.
- What is the virtual junction temperature range for the TJA1040T?
The virtual junction temperature range for the TJA1040T is from -40°C to +150°C.
