Overview
The TJA1050T/N1,518 is a high-speed CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device serves as the interface between the CAN protocol controller and the physical bus, providing differential transmit and receive capabilities. It is designed to be fully compatible with the ISO 11898 standard and is particularly suited for high-speed automotive applications. The TJA1050T/N1,518 is the third generation of Philips high-speed CAN transceivers, following the PCA82C250 and PCA82C251, and offers improved performance in terms of electromagnetic emission and behavior in unpowered nodes.
Key Specifications
| Parameter | Conditions | Min. | Max. | Unit |
|---|---|---|---|---|
| VCC supply voltage | 4.75 | 5.25 | V | |
| VCANH DC voltage at pin CANH | 0 < VCC < 5.25 V; no time limit | -27 | 40 | V |
| VCANL DC voltage at pin CANL | 0 < VCC < 5.25 V; no time limit | -27 | 40 | V |
| Vi(dif)(bus) differential bus input voltage dominant | 1.5 | 3 | V | |
| tPD(TXD-RXD) propagation delay TXD to RXD | VS = 0 V; see Fig.7 | -250 | ns | |
| Tvj virtual junction temperature | -40 | 150 | °C | |
| Rth(vj-a) thermal resistance from junction to ambient in SO8 package in free air | 145 | K/W | ||
| Operating Temperature | -40 | 150 | °C | |
| Package | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Fully compatible with the ISO 11898 standard for high-speed CAN applications.
- High-speed operation up to 1 Mbps.
- Very low ElectroMagnetic Emission (EME) due to optimal matching of the output signals CANH and CANL.
- Differential receiver with wide common-mode range for high ElectroMagnetic Immunity (EMI).
- An unpowered node does not disturb the bus lines.
- Transmit Data (TXD) dominant time-out function.
- Silent mode operation.
- Current-limiting circuit to protect the transmitter output stage from accidental short-circuit damage.
- Thermal protection circuit to protect the IC from damage by switching off the transmitter if the junction temperature exceeds a certain value.
- Protection from automotive electrical transients according to ISO 7637.
Applications
The TJA1050T/N1,518 is primarily intended for high-speed automotive applications, including in-vehicle networks and other environments where robust and reliable CAN communication is required. It is suitable for use in nodes that are in a power-down situation in partially powered networks, making it versatile for various automotive and industrial applications.
Q & A
- What is the primary function of the TJA1050T/N1,518?
The TJA1050T/N1,518 serves as the interface between the CAN protocol controller and the physical bus, providing differential transmit and receive capabilities.
- What is the maximum data rate supported by the TJA1050T/N1,518?
The device supports high-speed operation up to 1 Mbps.
- Is the TJA1050T/N1,518 compatible with any specific CAN standard?
Yes, it is fully compatible with the ISO 11898 standard.
- What kind of protection does the TJA1050T/N1,518 offer against electromagnetic interference?
The device features a differential receiver with a wide common-mode range for high ElectroMagnetic Immunity (EMI).
- How does the TJA1050T/N1,518 handle unpowered nodes in a network?
An unpowered node does not disturb the bus lines.
- What safety features does the TJA1050T/N1,518 have to protect against overheating?
The device includes a thermal protection circuit that switches off the transmitter if the junction temperature exceeds a certain value.
- What kind of electrical transient protection does the TJA1050T/N1,518 offer?
The device is protected from automotive electrical transients according to ISO 7637.
- What is the operating temperature range of the TJA1050T/N1,518?
The operating temperature range is from -40°C to 150°C.
- What is the package type of the TJA1050T/N1,518?
The device is packaged in an 8-SOIC (0.154", 3.90mm Width) package.
- Is the TJA1050T/N1,518 RoHS compliant?
Yes, the TJA1050T/N1,518 is lead-free and RoHS compliant.
