Industry-Standard High-Speed CAN

Transceivers with ±80V Fault Protection

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Detailed Description

The MAX13050/MAX13052/MAX13053/MAX13054

±80V fault-protected CAN transceivers are ideal for

automotive and industrial network applications where

overvoltage protection is required. These devices pro-

vide a link between the CAN protocol controller and the

physical wires of the bus lines in a control area network

(CAN). These devices can be used for +12V and +42V

battery automotive and DeviceNet applications, requir-

ing data rates up to 1Mbps.

The MAX13050/MAX13052/MAX13053/MAX13054

dominant timeout prevents the bus from being blocked

by a hungup microcontroller. If the TXD input is held

low for greater than 1ms, the transmitter becomes dis-

abled, driving the bus line to a recessive state. The

MAX13054 +3.3V logic input allows the device to com-

municate with +3.3V logic, while operating from a +5V

supply. The MAX13050 and MAX13052 provide a split

DC-stabilized voltage. The MAX13053 has a reference

output that can be used to bias the input of a CAN con-

troller’s differential comparator.

All devices can operate up to 1Mbps (high-speed

mode). The MAX13052 slope-control feature allows the

user to program the slew rate of the transmitter for data

Pin Description

PIN

NAME

FUNCTION

1

1

1

1

TXD

Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller

with a 25k

2

2

2

2

GND

Ground

33

3

3

4

4

4

4

RXD

Receive Data Output. RXD is a CMOS/TTL-compatible output from the physical

bus lines CANH and CANL. For the MAX13054, RXD output voltage is referenced

5

5

—

—

SPLIT

high impedance in standby mode .

6

6

6

6

CANL

CAN Bus-Line Low

7

7

7

7

CANH

CAN Bus-Line High

8

—

—

8

STBY

Standby Input. Drive STBY low for high-speed operation. Drive STBY high to

place the device in low-current standby mode.

—8

—

—

RS

Mode-Select Input. Drive RS low or connect to GND for high-speed operation.

Connect a resistor between RS and GND to control output slope. Drive RS high to

put into standby mode.

—

—

5

—

REF

——

8

—

S

Silent-Mode Input. Drive S low to enable TXD and to operate in high-speed

mode. Drive S high to disable the transmitter.

——

—

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