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See Technical Specifications

TPIC1021DG4

Automotive LIN physical interface

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TPIC1021DG4
Datasheet:

TPIC1021DG4 Datasheet (PDF)
Protocols:

LIN
Bus fault voltage (V):

-40 to 40
Rating:

Automotive
Operating temperature range (°C):

-40 to 125
EDA/CAD Models:

Request Free CAD Models for TPIC1021DG4

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TPIC1021DG4 General Description

The TPIC1021 is the LIN (Local Interconnect Network) physical interface, which 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 kbps and 20 kbps.

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 internal pull-up resistor (30 kΩ) and series diode, so no external pullup components are required for responder applications. Commander applications require an external pullup resistor (1 kΩ) plus a series diode.

Key Features

LIN physical layer specification revision 2.1 compliant conforms to SAEJ2602 recommended practice for LIN
LIN bus speed up to 20 kbps
ESD protection to 12 kV (human body model) on LIN pin
LIN pin handles voltage from –40 V to 40 V
Survives transient damage in automotive environment (ISO 7637)
Operation with supply from 7-V to 27-V DC
Two operation modes: normal and low-power (sleep) mode
Low current consumption in low power mode
Wake-up available from LIN bus, wake-up input (external switch) or host MCU
Interfaces to MCU with 5-V or 3.3-V I/O pins
Dominant state timeout protection on TXD pin
Wake-up request on RXD pin
Control of external voltage regulator (INH Pin)
Integrated pull-up resistor and series diode for LIN responder applications
Low EME (electromagnetic emissions), high EMI (electromagnetic immunity)
Bus terminal short-circuit protected for short to battery or short to ground
Thermally protected
Ground disconnection fail-safe at system level
Ground shift operation at system level
Unpowered node does not disturb the network

Specifications

Protocols	LIN	Bus fault voltage (V)	-40 to 40
Rating	Automotive	Operating temperature range (°C)	-40 to 125
feature-maximum-operating-supply-voltage-v		feature-minimum-operating-supply-voltage-v
feature-process-technology		feature-packaging	Tube
feature-rad-hard		feature-pin-count	8
feature-cecc-qualified	No	feature-esd-protection	Yes
feature-escc-qualified		feature-military	No
feature-aec-qualified	Yes	feature-aec-qualified-number
feature-auto-motive	No	feature-p-pap	No
feature-eccn-code	EAR99	feature-svhc	Yes
feature-svhc-exceeds-threshold	No