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±80V Fault-Protected/Tolerant CAN Transceiver
MAX3054/MAX3055/
MAX3056
General Description
Features
● ±80V Fault Protection
The MAX3054/MAX3055/MAX3056 are interfaces
between the protocol controller and the physical wires
of the bus lines in a controller area network (CAN). The
devices provide differential transmit capability and switch
to single-mode if certain fault conditions occur. The
MAX3054/MAX3055/MAX3056 guarantee full wakeup
capability during failure modes.
● Low RFI/Excellent EMC Immunity
● Full Wake-Up Capability During Failure Modes
● Bus Failure Management
● Support Single-Wire Transmission Mode with
Ground Offset Voltages Up to 1.5V
The extended fault-protected voltage range of CANH and
CANL bus lines of ±80V. Current-limiting and thermal-
protection circuits protect the transmitter output stage
against overcurrent faults to prevent destruction of the
transmitter output stage. The CANH and CANL lines are
also protected against electrical transients that may occur
in rugged environments.
● Thermally Protected
● Do Not Disturb the Bus Line when Unpowered
● Low-Current Sleep and Standby Mode with Wake-Up
Through Bus Lines
● Up to 250kbps Data Rate (MAX3054)
● Pin and Functionally Compatible with TJA1054
The transceiver provides three low-power modes that
can be entered and exited through pins STB and EN. An
output INH pin can be used for deactivation of an external
voltage regulator.
Ordering Information
The MAX3054/MAX3055/MAX3056 are designed to pro-
vide optimal operation for a specified data rate. The
MAX3054 is ideal for high data rates of 250kbps.
The MAX3055 is used for data rates of 125kbps and
the MAX3056 is designed for 40kbps applications. For
40kbps and 125kbps versions, a built-in slope-control
feature allows the use of unshielded cables, and receiver
input filters guarantee high noise immunity.
DATA
RATE
PIN-
PACKAGE
PART
TEMP RANGE
MAX3054ASD+ -40°C to +125°C
MAX3055ASD+ -40°C to +125°C
250kbps
14 SO
14 SO
14 SO
Slew control
125kbps
Slew control
40kbps
MAX3056ASD+ -40°C to +125°C
Applications
● Industrial HVAC
+Lead-free/RoHS-compliant package
Typical Operating Circuit
Pin Configuration
V
+12V
BATT
TOP VIEW
BATTERY
INH
TXD
1
2
3
4
5
6
7
14 BATT
13 GND
12 CANL
11 CANH
CAN CONTROLLER
+5V
RXD
ERR
STB
2
3
5
6
4
1
MAX3054
MAX3055
MAX3056
TXD RXD STB EN ERR INH
10
13
V
CC
100nF
10
9
V
CC
7
MAX305ꢀ
WAKE
GND
EN
RTL
RTH
14
BATT
WAKE
8
RTL
RTH
8
CANH CANL
11 12
9
FAULT
TO 80V
ꢀꢁ
CAN BUS
19-2687; Rev 2; 2/21
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2022 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
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