See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

D | 8

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

SN65HVDA195QDRQ1


Automotive Catalog LIN, MOST ECL, and K-Line Physical Interface

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Texas Instruments SN65HVDA195QDRQ1

The SN65HVDA195 device is the Local Interconnect Network (LIN) physical interface and MOST ECL interface, which integrates the serial transceiver with wake-up and protection features. The bus is a single-wire bidirectional bus typically used for low-speed in-vehicle networks using data rates to 20 kbps. The device can transmit with an effective data rate of 0 kbps because it does not have dominant state time-out. The protocol output data stream on TXD is converted by the SN65HVDA195 into the bus signal through a current-limited wave-shaping driver as outlined by the LIN Physical Layer Specification Revision 2.0. The receiver converts the data stream from the bus and outputs the data stream through RXD. The bus has two states: dominant state (voltage near ground) and the recessive state (voltage near battery). In the recessive state, the bus is pulled high by the SN65HVDA195’s internal pullup resistor and series diode, so no external pullup components are required for slave applications. Master applications require an external pullup resistor (1 kΩ) plus a series diode per the LIN specification.

In sleep mode, the SN65HVDA195 requires low quiescent current even though the wake-up circuits remain active, allowing for remote wake up through the LIN bus or local wake up through the NWake or EN pins.

The SN65HVDA195 has been designed for operation in the harsh automotive environment. The device can handle LIN bus voltage swings from 40 V down to ground and survive –40 V. The device also prevents back-feed current through LIN to the supply input, in case of a ground shift or supply voltage disconnection. It also features undervoltage, overtemperature, and loss-of-ground protection. In the event of a fault condition, the output is immediately switched off and remains off until the fault condition is removed.

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