General Description

The MAX13020/MAX13021 ±60V fault-protected low-

power local interconnect network (LIN) transceivers are

ideal for use in automotive network applications where

high reliability is required. The devices provide the

interface between the LIN master/slave protocol con-

troller, and the physical bus described in the LIN 2.0

specification package and SAE J2602 specification.

The devices are intended for in-vehicle subnetworks

with a single master and multiple slaves.

The extended fault-protected voltage range of ±60V on

the LIN bus line allows for use in +12V, +24V, and

+42V automotive applications. The devices allow com-

munication up to 20kbaud, and include slew-rate limit-

ed transmitters for enhanced electromagnetic

emissions (EME) performance. The devices feature a

low-power 4µA sleep mode and provide wake-up

source detection.

The MAX13020 is a pin-to-pin replacement and is func-

tionally compatible with the Philips TJA1020. The

MAX13021 includes enhanced bus dominant clamping

fault management for reduced quiescent current during

LIN bus shorts to GND. The MAX13020/MAX13021 are

available in the 8-pin SO package, and operate over

the -40°C to +125°C automotive temperature range.

Applications

+12V/+42V Automotive

+24V Heavy Truck and Bus

Features

o MAX13020 is a Pin-to-Pin Upgrade for TJA1020

o ESD Protection

±12kV Human Body Model (LIN)

±4kV Contact Discharge (LIN, NWAKE, BAT)

o LIN 2.0/SAE J2602 Compatible

o Slew-Rate Limited Transmitter for Low

Electromagnetic Emissions (EME)

o Robust Electromagnetic Immunity (EMI)

o Passive Behavior in Unpowered State

o TXD Dominant Timeout Function

o LIN Bus Dominant Management (MAX13021 Only)

o Input Levels Compatible with +3.3V and +5V

Controllers

o Integrated 30kΩ Termination Resistor for Slave

Applications

o Low 4µA Sleep Mode with Local and Remote

Wake-Up Detection

o Wake-Up Source Recognition

o Thermal Shutdown

±60V Fault-Protected LIN Transceivers

________________________________________________________________ Maxim Integrated Products

1

19-0559; Rev 1; 6/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART

LIN BUS

DOMINANT

MANAGEMENT

PIN-

PACKAGE

PACKAGE

CODE

MAX13020ASA+

—

8 SO

S8-5

MAX13021ASA+

Yes

8 SO

S8-5

BAT

TXD

RXD

NSLP

LIN

GND

INH

NWAKE

MICROCONTROLLER

LIN

BUS

1k

Ω

MASTER NODE

ONLY

+5V LDO

*

EN

MAX5023

MAX13020

MAX13021

*OPTIONAL TXD PULLUP RESISTOR FOR READING WAKE-UP SOURCE FLAG

Typical Operating Circuit

Note: All devices are specified over the -40°C to +125°C auto-

motive temperature range.

+Denotes lead-free package.

Pin Configuration appears at end of data sheet.