TJA1028TK/3V3/20,1

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The TJA1028TK/3V3/20,1 is an automotive-grade high-speed CAN (Controller Area Network) transceiver. It is intended for use in the mobile communication interface within a transport system subsystem, as well as in other applications, such as building control and automotive body control. The transceiver lends itself well to a variety of applications due to its robust design and low power consumption.

In automotive systems, the TJA1028TK/3V3/20,1 can be used as an interface between two or more CAN nodes, providing electrical isolation from any potential disturbance or electrical noise. The transceiver operates over a wide supply voltage range of 8V to 36V and is characterized for operation with a 5V logic supply voltage. The integrated DC-DC converter for the logic supply supports a wide supply voltage range and provides high power efficiency.

The TJA1028TK/3V3/20,1 supports a data rate of up to 1 Mbps in both Standard and Extended CAN protocol. The Differential High Speed DataLink (DHSD) line driver and 10kV ESD protection on the pins of the transceiver provide superior protection from high-voltage and/or high-energy transients. The integrated high-side/low-side surge protection is intended to protect against EMI interference that can occur on the data lines.

The transceiver employs a state-of-the-art bandgap reference for the generation of the IC muting voltage. This Voltz controller delivers an excellent low power (1 mW max) performance and low noise characteristics. The Muting or "sleep" mode keeps the IC in a low power state while still providing protection against stationary and/or transient electromagnetic interference.

The transceiver offers a wide range of features that are essential to meeting the automotive industry\'s EMC requirements, including a built-in high-speed link restore algorithm, a bus-wake-up feature, a controlled-rise-time circuit, a fast power-on reset feature, and a hot-plug feature.

The TJA1028TK/3V3/20,1 supports both the Standard and Extended CAN protocols, enabling these protocols to interact without the need for additional hardware. The CAN protocol is used for communication between all kinds of controllers, sensors, and actuators in automotive applications. The CAN protocol requires two connections for communication, receiver and transmitter.

The transceiver ensures that the correct level of signal transmission or reception is possible over the CAN bus by providing two transistor-inverter circuits (TINCSs), providing both transmitter and receiver functionality. The TINCSs support a data rate of up to 1 Mbps in the Standard and Extended CAN protocol.

The TJA1028TK/3V3/20,1 also includes an LED driver circuit that can be used to indicate the communication status on the bus. The LED is a segmented LED, which should be connected to an external port. The LED driver is active low and is enabled via a protection circuit. The protection circuit is fed by an internal voltage regulator, which also provides the logic supply.

In addition, the TJA1028TK/3V3/20,1 provides monitoring of the generated supply voltage to detect over-current and over-voltage conditions. The integrated Thermal Sensor (TS) is used to detect a fault condition when the junction temperature rises above a specified temperature. The threshold level is adjustable so that the transceiver can respond to changing environmental conditions.

In conclusion, the TJA1028TK/3V3/20,1 is a high-quality CAN transceiver used in automotive systems for communication between controllers, sensors and actuators. It supports the Standard and Extended CAN protocols and operates over a wide supply voltage range with a high efficiency DC-DC converter. The integrated DC-DC converter, low power consumption and 10kV ESD protection are key features that make the transceiver suitable for automotive applications. The integrated LED indicates the communication status and the protection circuit prevents damage from high-voltage and/or high-energy transients. The integrated Thermal Sensor detects a fault condition should the junction temperature rise above a specified threshold, further protecting the device.

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