Overview
The TJA1054T/VM,518 is a fault-tolerant CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device serves as the interface between the protocol controller and the physical bus wires in a CAN network, primarily intended for low-speed applications up to 125 kBd, particularly in passenger cars.
The TJA1054T offers differential receive and transmit capabilities and can switch to single-wire transmitter and/or receiver in error conditions, ensuring robust operation in fault-prone environments. It is pin and functionally compatible with the PCA82C252T and the TJA1053T, making it a suitable replacement for these devices.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC supply voltage | 4.75 | 5.25 | V | ||
| VBAT supply voltage | 5.0 | 27 | V | ||
| ICC supply current (normal operating mode, VTXD = VCC) | 4 | 7 | 11 | mA | |
| ICC supply current (normal operating mode, VTXD = 0 V) | 10 | 17 | mA | ||
| Operating temperature range | -40 | 150 | °C | ||
| Bus line output rise time (10% to 90%) | C1 = 10 nF | 0.6 | μs | ||
| Bus line output fall time (10% to 90%) | C1 = 1 nF | 0.3 | μs | ||
| Output current on pin CANL (normal operating mode) | VCANL = 14 V; VTXD = 0 V | 45 | 70 | 100 | mA |
Key Features
- Differential receive and transmit capability with the ability to switch to single-wire transmitter and/or receiver in error conditions.
- Bus pins short-circuit safe to battery and to ground.
- Thermally protected and protected against transients in an automotive environment.
- Low current sleep mode and standby mode with wake-up via the bus lines.
- Power-on reset flag on the output.
- Unpowered node does not disturb the bus lines.
- Pin and functionally compatible with PCA82C252T and TJA1053T.
Applications
The TJA1054T/VM,518 is primarily used in low-speed CAN applications, particularly in the automotive sector. It is suitable for use in passenger cars and other vehicles where robust and fault-tolerant CAN communication is required.
- Automotive networks (e.g., passenger cars).
- Industrial control systems requiring CAN communication.
- Other applications needing fault-tolerant CAN transceivers.
Q & A
- What is the primary function of the TJA1054T/VM,518?
The TJA1054T/VM,518 is a fault-tolerant CAN transceiver that serves as the interface between the protocol controller and the physical bus wires in a CAN network.
- What are the key improvements of the TJA1054T over its predecessors?
The TJA1054T offers improved fault tolerance, including bus pins short-circuit safe to battery and to ground, thermal protection, and protection against transients in an automotive environment.
- What is the operating temperature range of the TJA1054T/VM,518?
The operating temperature range is from -40°C to 150°C.
- Is the TJA1054T compatible with other CAN transceivers?
Yes, it is pin and functionally compatible with the PCA82C252T and the TJA1053T.
- What are the supply voltage ranges for VCC and VBAT?
VCC supply voltage ranges from 4.75 V to 5.25 V, and VBAT supply voltage ranges from 5.0 V to 27 V.
- What are the typical supply current values for normal operating modes?
The typical supply current is 7 mA when VTXD = VCC and 17 mA when VTXD = 0 V.
- Does the TJA1054T support low power modes?
Yes, it supports low current sleep mode and standby mode with wake-up via the bus lines.
- What is the purpose of the wake-up threshold voltage on pin CANL?
The wake-up threshold voltage on pin CANL is used to signal a wake-up event in low power modes.
- Is the TJA1054T RoHS compliant?
Yes, the TJA1054T/VM,518 is RoHS compliant.
- What is the recommended replacement part for the TJA1054T?
NXP recommends the TJA1055 as a replacement for the TJA1054T.
