TPIC1021D

TEXAS INSTRUMENTS  TPIC1021D  芯片, LIN总线接口, SMD, 8SOIC

The is a Local Interconnect Network Physical Interface integrates the serial transceiver with wake up and protection features. The LIN bus is a single wire, bi-directional bus typically used for low-speed in-vehicle networks using baud rates between 2.4 and 20kbps. The LIN bus has two logical values: the dominant state voltage near ground represents a logic 0 and the recessive state voltage near battery and represents logic 1. In the recessive state the LIN bus is pulled high by the TPIC1021"s internal pull-up resistor 30kR and series diode, so no external pullup components are required for slave applications. Master applications require an external pullup resistor 1R plus a series diode. The LIN protocol output data stream on the TXD pin is converted by the TPIC1021 into the LIN bus signal through a current limited, wave-shaping low-side driver with control as outlined by the LIN Physical Layer Specification Revision 2.0.

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LIN physical layer specification revision 2.0

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Low current consumption in low power mode

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Wake-up available from LIN bus, wake-up input

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Dominant state timeout protection on TXD pin

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Wake-up request on RXD pin

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Control of external voltage regulator INH pin

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Integrated pull-up resistor and series diode for LIN slave applications

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Low EME and high EMI

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Bus terminal short-circuit protected for short-to-battery or short-to-ground

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Thermally protected

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Ground disconnection failsafe at system level

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Ground shift operation at system level

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Unpowered node does not disturb the network

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Green product and no Sb/Br

Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.