19-2687; Rev 0; 11/02
±80V Fault-Protected/Tolerant CAN
Transceivers for In-Car Applications
General Description
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-wire mode if certain fault conditions
occur. The MAX3054/MAX3055/MAX3056 guarantee
full wake-up capability during failure modes.
The extended fault-protected voltage range of CANH
and CANL bus lines of ±80V allows for use in 42V
automotive applications. 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 an automotive environment.
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.
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 the
40kbps and 125kbps versions, a built-in slope-control
feature allows the use of unshielded cables, and receiv-
er input filters guarantee high noise immunity.
Features
o
Pin and Functionally Compatible with TJA1054
o
±80V Fault Protection Suitable for 42V Battery
Systems
o
Low RFI/Excellent EMC Immunity
o
Full Wake-Up Capability During Failure Modes
o
Bus-Failure Management
o
Support Single-Wire Transmission Mode with
Ground Offset Voltages Up to 1.5V
o
Thermally Protected
o
Do Not Disturb the Bus Line when Unpowered
o
Low-Current Sleep and Standby Mode with Wake-
Up Through Bus Lines
o
Up to 250kbps Data Rate (MAX3054)
MAX3054/MAX3055/MAX3056
Ordering Information
PART
MAX3054ASD
MAX3055ASD
MAX3056ASD
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
DATA RATE
250kbps
Slew control
125kbps
Slew control
40kbps
PIN-
PACKAGE
14 SO
14 SO
14 SO
Applications
Automotive
Typical Operating Circuit
V
BATT
+12V
BATTERY
CAN CONTROLLER
+5V
2
3
5
STB
6
EN
4
ERR
1
INH
10
V
CC
GND
BATT
RTL
9
13
14
100nF
Pin Configuration
TOP VIEW
INH 1
TXD
RXD
2
3
14 BATT
13 GND
12 CANL
TXD RXD
ERR 4
STB 5
EN 6
7
WAKE
MAX305_
MAX3054
MAX3055
MAX3056
11 CANH
10 V
CC
9
8
RTL
RTH
RTH
8
CAN BUS
CANH CANL
11
12
WAKE 7
FAULT
TO
±80V
SO
________________________________________________________________
Maxim Integrated Products
1
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.
±80V Fault-Protected/Tolerant CAN
Transceivers for In-Car Applications
MAX3054/MAX3055/MAX3056
ABSOLUTE MAXIMUM RATINGS
(All voltages are referenced to GND)
Supply Voltage (V
CC
) ...............................................-0.3V to +6V
Battery Voltage (V
BATT
)..........................................-0.3V to +80V
TXD, RXD,
ERR, STB,
EN ...........................-0.3V to (V
CC
+ 0.3V)
CANH, CANL ..........................................................-80V to +80V
RTH, RTL ................................................................-0.3V to +80V
RTH, RTL Current ...........................................................±180mA
WAKE
.....................................................................-0.3V to +80V
INH ..........................................................-0.3V to (V
BATT
+ 0.3V)
INH Current.......................................................................-0.5mA
Transient Voltage (ISO 7637)................................-200V, +200V*
Continuous Power Dissipation (T
A
= +70°C)
14-Pin SO (derate 8.3mW/°C above +70°C)................667mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
*Pending
completion of testing.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 5V ±5%, V
BATT
= +5V to +42V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 5V, V
BATT
= 14V, R1 = 100Ω
(Figure 2), T
A
= +25°C.) (Notes 1, 2)
PARAMETER
VOLTAGE SUPPLIES
Dominant normal operating mode, no load,
TXD = 0
Supply Current
I
CC
Recessive normal operating mode,
TXD = V
CC
Low-power modes: V
TXD
= V
CC
, V
BATT
= 14V
Battery Current
Battery Power on Flag Threshold
STB,
EN, AND TXD
High-Level Input Voltage
Low-Level Input Voltage
High-Level Input Current
Low-Level Input Current
Supply Voltage—Forced
Standby Mode (Fail-Safe)
RXD AND
ERR
High-Level Output Voltage
Low-Level Output Voltage
WAKE
Wake-Up Threshold Voltage
Low-Level Input Current
V
TH(WAKE)
I
IL(WAKE)
V
STB
= 0V
V
WAKE
= 0V
2.0
-10
2.7
-4
3.4
-1
V
µA
V
OH
V
OL
I
OUT
= -1mA
I
OUT
= 7.5mA
V
CC
- 0.5
0
V
CC
0.9
V
V
V
IH
V
IL
I
IH
I
IL
V
FS
V
IN
= 4V
V
IN
= 1V
V
BATT
= 14V
STB
and EN
TXD
STB
and EN
TXD
-200
4
-800
2.75
9
-80
8
-320
-100
4.50
2.4
0.8
20
-25
V
V
µA
µA
V
I
BATT
V
PWRON
Low-power modes at V
TRL
= V
BATT
,
V
BATT
= V
WAKE
= V
INH
= 5V to 27V
Low-power modes
5
1.0
16
4
3
54
30
mA
10
10
125
3.5
µA
µA
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
±80V Fault-Protected/Tolerant CAN
Transceivers for In-Car Applications
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V ±5%, V
BATT
= +5V to +42V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 5V, V
BATT
= 14V, R1 = 100Ω
(Figure 2), T
A
= +25°C.) (Notes 1, 2)
PARAMETER
INH
High-Level Voltage Drop
Leakage Current
CANH, CANL
V
CC
= 5V, no failures and bus failures 1, 2,
5, 9
Differential Receiver Threshold
V
DIFF
V
CC
= 4.75V to 5.25V, no failures and bus
failures 1, 2, 5, 9
No failures and bus failures 1, 2, 5, 9
TXD = V
CC
, RTH < 4kΩ
TXD = V
CC
, RTH < 4kΩ
TXD = 0V, R1 = 100Ω
TXD = 0V, R1 = 100Ω
V
CANH
= 0V, TXD = 0V
Low-power modes, V
CANH
= 0V, V
CC
= 5V
V
CANL
= 14V, TXD = 0V
CANL Output Current
Voltage Detection Threshold for
Short Circuit to Battery on CANH
Voltage Detection Threshold for
Short Circuit to GND on CANL
Voltage Detection Threshold for
Short Circuit to Battery on CANL
CANL Wake-Up Threshold
CANH Wake-Up Threshold
CANH Single-Ended Receiver
Threshold (Failures 4, 6, 7)
CANH Single-Ended Receiver
Hysteresis
I
O(CANL)
Low-power modes, V
CANL
= 42V,
V
BATT
= 42V, RTL = open
V
CC
= 4.75V to 5.25V
Low-power modes
Low-power modes
Normal mode, V
CC
= 5V
Low-power modes
Low-power modes
V
CC
= 5V
V
CC
= 4.75V to 5.25V
0.30
✕
V
CC
1.1
2.5
6.4
2.5
1.1
1.50
0.30
✕
V
CC
10
7.3
3.2
1.8
1.70
-150
-10
75
130
20
0.37
✕
V
CC
2.5
3.9
8.2
3.9
2.5
1.85
0.37
✕
V
CC
-86
V
CC
- 0.2
V
CC
- 1.4
1.4
-3.5
-3.2
-2.9
V
-0.70
✕
V
CC
-0.58
✕
V
CC
18
200
mV
mV
V
V
V
mA
µA
mA
µA
V
V
V
V
V
V
mV
∆V
H
I
LEAK(INH)
INH = -0.18mA, standby mode
Sleep mode, V
INH
= 0V
0.8
5
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX3054/MAX3055/MAX3056
Differential Receiver Hysteresis
CANH Recessive Output Voltage
CANL Recessive Output Voltage
CANH Dominant Output Voltage
CANL Dominant Output Voltage
CANH Output Current
HYST
V
OCH
V
OCL
V
OCHDOM
V
OCLDOM
I
O(CANH)
V
DET(CANH)
V
DTG(CANL)
V
DET(CANL)
V
THL(WAKE)
V
THH(WAKE)
V
SE(CANH)
HYST
_______________________________________________________________________________________
3
±80V Fault-Protected/Tolerant CAN
Transceivers for In-Car Applications
MAX3054/MAX3055/MAX3056
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V ±5%, V
BATT
= +5V to +42V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 5V, V
BATT
= 14V, R1 = 100Ω
(Figure 2), T
A
= +25°C.) (Notes 1, 2)
PARAMETER
CANL Single-Ended Receiver
Threshold
CANL Single-Ended Receiver
Hysteresis
RTL AND RTH
RTL to V
CC
Switch
On-Resistance
RTH to V
CC
Switch
On-Resistance
Output Current on Pin RTL
RTL Pullup Current
RTH Pulldown
THERMAL SHUTDOWN
Shutdown Junction Temperature
Thermal Protection Hysteresis
T
J
T
JF6
T
HYS
For shutdown
During failure 6—switch off CANL only
165
140
15
°C
°C
R
SW(RTL)
R
SW(RTH)
I
O(RTL)
|I
PU(RTL)
|
|I
PU(RTH)
|
I
O
= -10mA
I
O
= 10mA
Low-power modes, V
RTL
= 0
Normal and failures 4, 6, 7, RTL = 0V
Normal and failures 3, 8, RTL = V
CC
-1.25
20
20
36
23
-0.65
107
106
100
100
-0.30
200
200
Ω
Ω
mA
µA
µA
SYMBOL
V
SE(CANL)
HYST
V
CC
= 5V
V
CC
= 4.75V to 5.25V
Failures 3, 8
CONDITIONS
MIN
3.15
TYP
3.30
MAX
3.45
UNITS
V
mV
0.63
✕
V
CC
10
0.69
✕
V
CC
AC ELECTRICAL CHARACTERISTICS
(V
CC
= 5V ±5%, V
BATT
= +5V to +42V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 5V, V
BATT
= 14V, R1 = 100Ω
(Figure 2), T
A
= +25°C.) (Notes 1, 2)
PARAMETER
TRANSITION TIME
CANL and CANH Bus Output
Transition Time Recessive to
Dominant (10% to 90%)
CANL and CANH Bus Output
Transition Time Dominant to
Recessive (10% to 90%)
C
L
= 330pF, MAX3054 (250kbps)
t
(r-d)
C
L
= 220pF to 3.3nF, MAX3055 (125kbps)
C
L
= 560pF to 10nF, MAX3056 (40kbps)
C
L
= 330pF, MAX3054 (250kbps)
t
(d-r)
C
L
= 220pF to 1nF, MAX3055 (125kbps)
C
L
= 560pF to 3.3nF, MAX3056 (40kbps)
No failures, C
L
= 330pF, MAX3054
(250kbps)
Bus failures 1, 2, 5, 9,
C
L
= 330pF, MAX3054 (250kbps)
No failures and bus failures 1, 2, 5, 9,
C
L
= 1nF, MAX3055 (125kbps)
No failures and bus failures 1, 2, 5, 9,
C
L
= 3.3nF, MAX3056 (40kbps)
200
0.5
100
0.7
130
1200
2.8
38
700
3.3
ns
µs
ns
µs
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PROPAGATION DELAY TXD TO RXD LOW—DOMINANT TRANSMISSION
(Figures 1, 2)
600
ns
750
1.5
µs
4.7
Differential Reception
t
PDLD
4
_______________________________________________________________________________________
±80V Fault-Protected/Tolerant CAN
Transceivers for In-Car Applications
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V ±5%, V
BATT
= +5V to +42V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 5V, V
BATT
= 14V, R1 = 100Ω
(Figure 2), T
A
= +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
Bus failures 3, 4, 6, 7, 8,
C
L
= 330pF, MAX3054 (250kbps)
Single-Ended Reception
t
PDLSE
Bus failures 3, 4, 6, 7, 8,
C
L
= 1nF, MAX3055 (125kbps)
Bus failures 3, 4, 6, 7, 8,
C
L
= 3.3nF, MAX3056 (40kbps)
PROPAGATION DELAY TXD TO RXD HIGH—RECESSIVE TRANSMISSION
(Figures 1, 2)
No failures and bus failures 1, 2, 5, 9,
C
L
= 330pF, MAX3054 (250kbps)
Differential Reception
t
PDHD
No failures and bus failures 1, 2, 5, 9,
C
L
= 1nF, MAX3055 (125kbps)
No failures and bus failures 1, 2, 5, 9,
C
L
= 3.3nF, MAX3056 (40kbps)
Bus failures 3, 4, 6, 7, 8,
C
L
= 330pF, MAX3054 (250kbps)
Single-Ended Reception
t
PDHSE
Bus failures 3, 4, 6, 7, 8,
C
L
= 1nF, MAX3055 (125kbps)
Bus failures 3, 4, 6, 7, 8,
C
L
= 3.3nF, MAX3056 (40kbps)
WAKE-UP TIMING
Minimum Time for Wake-Up on
CANL and CANH or
WAKE
FAILURES TIMING
Failures 3 and 8 Detection Time
Normal and
low-power mode
MAX3054 (250kbps),
MAX3055 (125kbps)
MAX3056 (40kbps)
Failures 4 and 7 Detection Time
t
DET
Normal and
low-power mode
MAX3054 (250kbps),
MAX3055 (125kbps)
MAX3056 (40kbps)
Failure 6 Detection Time
Normal mode
MAX3054 (250kbps),
MAX3055 (125kbps)
MAX3056 (40kbps)
1.9
5.5
0.3
1.0
0.35
0.93
5.7
16.5
1
3.2
1.1
2.97
9.5
27.0
1.9
5.5
1.85
5.00
ms
t
WAKE
8
38
µs
950
1.9
µs
5.95
950
1.9
µs
5.95
ns
ns
MIN
TYP
MAX
750
1. 5
µs
4.7
UNITS
ns
MAX3054/MAX3055/MAX3056
_______________________________________________________________________________________
5
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
