MAXIM MAX3054, MAX3055, MAX3056 User Manual

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 thermalprotection 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 provide 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 receiver input filters guarantee high noise immunity.

Applications

Automotive

Features

♦ Pin and Functionally Compatible with TJA1054

♦ ±80V Fault Protection Suitable for 42V Battery

Systems

♦ 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

♦ 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)

MAX3054/MAX3055/MAX3056

±80V Fault-Protected/Tolerant CAN

Transceivers for In-Car Applications

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

Ordering Information

TXD RXD STB EN

ERR

INH

BATTERY

RTH

CANH CANL

RTL

BATT

GND

WAKE

+5V

CAN CONTROLLER

235641

81112 9

100nF

BATT

+12V

MAX305_

CAN BUS

FAULT

TO ±80V

Typical Operating Circuit

19-2687; Rev 0; 11/02

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.

PART TEMP RANGE DATA RATE

MAX3054ASD -40°C to +125°C 250kbps 14 SO

MAX3055ASD -40°C to +125°C

MAX3056ASD -40°C to +125°C

Slew control

125kbps

Slew control

40kbps

PINPACKAGE

14 SO

TOP VIEW

INH

TXD

RXD

STB

BATT

GND

CANL

MAX3054 MAX3055 MAX3056

CANHERR

RTL

RTHWAKE

MAX3054/MAX3055/MAX3056

±80V Fault-Protected/Tolerant CAN Transceivers for In-Car Applications

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= 5V ±5%, V

BATT

= +5V to +42V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 5V, V

BATT

= 14V, R1 = 100Ω

(Figure 2), T

= +25°C.) (Notes 1, 2)

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.

(All voltages are referenced to GND) Supply Voltage (V

) ...............................................-0.3V to +6V

Battery Voltage (V

BATT

)..........................................-0.3V to +80V

TXD, RXD, ERR, STB, EN ...........................-0.3V to (V

+ 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

= +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.

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VOLTAGE SUPPLIES

Supply Current I

Battery Current I

Battery Power on Flag Threshold V

STB, EN, AND TXD

High-Level Input Voltage V

Low-Level Input Voltage V

High-Level Input Current I

Low-Level Input Current I

Supply Voltage—Forced Standby Mode (Fail-Safe)

RXD AND ERR

High-Level Output Voltage V

Low-Level Output Voltage V

WAKE

Wake-Up Threshold Voltage V

Low-Level Input Current I

BATT

PWRON

TH(WAKE

IL(WAKE

Dominant normal operating mode, no load, TXD = 0

Recessive normal operating mode, TXD = V

Low - p ow er m od es: V

Low-power modes at V

= V

BATT

WAKE

Low-power modes 1.0 3.5 V

VIN = 4V

VIN = 1V

= 14V 2.75 4.50 V

BATT

= -1mA VCC - 0.5 V

OUT

= 7.5mA 0 0.9 V

OUT

= 0V 2.0 2.7 3.4 V

STB

= 0V -10 -4 -1 µA

WAKE

16 30

410

= V

, V

= 14V 3 10 µA

B AT T

BATT

5 54 125 µA

= V

INH

T X D

C C

= V

TRL

= 5V to 27V

2.4 V

0.8 V

STB and EN 9 20

TXD -200 -80 -25 STB and EN 4 8

TXD -800 -320 -100

µA

MAX3054/MAX3055/MAX3056

±80V Fault-Protected/Tolerant CAN

Transceivers for In-Car Applications

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V ±5%, V

BATT

= +5V to +42V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 5V, V

BATT

= 14V, R1 = 100Ω

(Figure 2), T

= +25°C.) (Notes 1, 2)

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

INH

High-Level Voltage Drop ∆V

Leakage Current I

CANH, CANL

Differential Receiver Threshold V

Differential Receiver Hysteresis HYST No failures and bus failures 1, 2, 5, 9 18 mV

CANH Recessive Output Voltage V

CANL Recessive Output Voltage V

CANH Dominant Output Voltage V

CANL Dominant Output Voltage V

CANH Output Current I

CANL Output Current I

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 V

CANH Wake-Up Threshold V

CANH Single-Ended Receiver Threshold (Failures 4, 6, 7)

CANH Single-Ended Receiver Hysteresis

LEAK(INH

DIFF

OCH

OCL

OCHDOM

OCLDOM

O(CANH

O(CANL

DET(CANH

DTG(CANL

DET(CANL

THL(WAKE

THH(WAKE

SE(CANH

INH = -0.18mA, standby mode 0.8 V

Sleep mode, V

VCC = 5V, no failures and bus failures 1, 2, 5, 9

VCC = 4.75V to 5.25V, no failures and bus failures 1, 2, 5, 9

= 0V 5 µA

INH

-3.5 -3.2 -2.9

✕ V

- 0.70

C C

TXD = VCC, RTH < 4kΩ 200 mV

TXD = VCC, RTH < 4kΩ VCC - 0.2 V

TXD = 0V, R1 = 100Ω VCC - 1.4 V

TXD = 0V, R1 = 100Ω 1.4 V

= 0V, TXD = 0V -150 -86 mA

CANH

Low-power modes, V

= 14V, TXD = 0V 75 130 mA

CANL

Low-power modes, V V

= 42V, RTL = open

BATT

= 0V, VCC = 5V -10 µA

CANH

= 42V,

CANL

VCC = 4.75V to 5.25V 0.30 ✕ VCC 0.37 ✕ V

Low-power modes 1.1 2.5

Low-power modes 2.5 3.9 V

Normal mode, VCC = 5V 6.4 7.3 8.2 V

Low-power modes 2.5 3.2 3.9 V

Low-power modes 1.1 1.8 2.5 V

= 5V 1.50 1.70 1.85

VCC = 4.75V to 5.25V 0.30 ✕ VCC 0.37 ✕ V

- 0.58 ✕ V

C C

20 µA

HYST 10 mV

MAX3054/MAX3055/MAX3056

±80V Fault-Protected/Tolerant CAN Transceivers for In-Car Applications

4 _______________________________________________________________________________________

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V ±5%, V

BATT

= +5V to +42V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 5V, V

BATT

= 14V, R1 = 100Ω

(Figure 2), T

= +25°C.) (Notes 1, 2)

)

AC ELECTRICAL CHARACTERISTICS

(VCC= 5V ±5%, V

BATT

= +5V to +42V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 5V, V

BATT

= 14V, R1 = 100Ω

(Figure 2), T

= +25°C.) (Notes 1, 2)

CANL Single-Ended Receiver Threshold

CANL Single-Ended Receiver Hysteresis

RTL AND RTH

RTL to VCC Switch On-Resistance

RTH to VCC Switch On-Resistance

Output Current on Pin RTL I

RTL Pullup Current |I

RTH Pulldown |I

THERMAL SHUTDOWN

Shutdown Junction Temperature

Thermal Protection Hysteresis T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SE(CANL

HYST Failures 3, 8 10 mV

SW(RTL

SW(RTH

O(RTL

| Normal and failures 4, 6, 7, RTL = 0V 20 107 200 µA

PU(RTL

| Normal and failures 3, 8, RTL = V

PU(RTH

JF6

HYS

VCC = 5V 3.15 3.30 3.45

VCC = 4.75V to 5.25V 0.63 ✕ VCC 0.69 ✕ V

IO = -10mA 36 100 Ω

IO = 10mA 23 100 Ω

Low-power modes, V

For shutdown 165

During failure 6—switch off CANL only 140

= 0 -1.25 -0.65 -0.30 mA

RTL

20 106 200 µA

°C

15 °C

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%)

PROPAGATION DELAY TXD TO RXD LOW—DOMINANT TRANSMISSION (Figures 1, 2)

Differential Reception t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(r-d)

(d-r)

PDLD

CL = 330pF, MAX3054 (250kbps) 38

CL = 220pF to 3.3nF, MAX3055 (125kbps) 100 700

CL = 560pF to 10nF, MAX3056 (40kbps) 0.7 3.3 µs

CL = 330pF, MAX3054 (250kbps) 130

CL = 220pF to 1nF, MAX3055 (125kbps) 200 1200

CL = 560pF to 3.3nF, MAX3056 (40kbps) 0.5 2.8 µs

No failures, CL = 330pF, MAX3054 (250kbps)

Bus failures 1, 2, 5, 9,

= 330pF, MAX3054 (250kbps)

No failures and bus failures 1, 2, 5, 9,

= 1nF, MAX3055 (125kbps)

No failures and bus failures 1, 2, 5, 9,

= 3.3nF, MAX3056 (40kbps)

600

750

1.5

4.7

µs

MAX3054/MAX3055/MAX3056

±80V Fault-Protected/Tolerant CAN

Transceivers for In-Car Applications

_______________________________________________________________________________________ 5

AC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V ±5%, V

BATT

= +5V to +42V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 5V, V

BATT

= 14V, R1 = 100Ω

(Figure 2), T

= +25°C.) (Notes 1, 2)

Single-Ended Reception t

PROPAGATION DELAY TXD TO RXD HIGH—RECESSIVE TRANSMISSION (Figures 1, 2)

Differential Reception t

Single-Ended Reception t

WAKE-UP TIMING

PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS

PDLSE

PDHD

PDHSE

Bus failures 3, 4, 6, 7, 8, C

= 330pF, MAX3054 (250kbps)

Bus failures 3, 4, 6, 7, 8, C

= 1nF, MAX3055 (125kbps)

Bus failures 3, 4, 6, 7, 8, C

= 3.3nF, MAX3056 (40kbps)

No failures and bus failures 1, 2, 5, 9,

= 330pF, MAX3054 (250kbps)

No failures and bus failures 1, 2, 5, 9,

= 1nF, MAX3055 (125kbps)

No failures and bus failures 1, 2, 5, 9, C

= 3.3nF, MAX3056 (40kbps)

Bus failures 3, 4, 6, 7, 8, C

= 330pF, MAX3054 (250kbps)

Bus failures 3, 4, 6, 7, 8, C

= 1nF, MAX3055 (125kbps)

Bus failures 3, 4, 6, 7, 8, C

= 3.3nF, MAX3056 (40kbps)

750 ns

1. 5

4.7

950 ns

1.9

5.95

950 ns

1.9

5.95

µs

Minimum Time for Wake-Up on CANL and CANH or WAKE

FAILURES TIMING

Failures 3 and 8 Detection Time

Failures 4 and 7 Detection Time

Failure 6 Detection Time

WAKE

DET

Normal and low-power mode

Normal mode

838µs

MAX3054 (250kbps), MAX3055 (125kbps)

MAX3056 (40kbps) 5.5 16.5 27.0

MAX3054 (250kbps), MAX3055 (125kbps)

MAX3056 (40kbps) 1.0 3.2 5.5

MAX3054 (250kbps), MAX3055 (125kbps)

MAX3056 (40kbps) 0.93 2.97 5.00

1.9 5.7 9.5

0.3 1 1.9

0.35 1.1 1.85

MAX3054/MAX3055/MAX3056

±80V Fault-Protected/Tolerant CAN Transceivers for In-Car Applications

6 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V ±5%, V

BATT

= +5V to +42V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= 5V, V

BATT

= 14V, R1 = 100Ω

(Figure 2), T

= +25°C.) (Notes 1, 2)

)

Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device

ground, unless otherwise noted.

Note 2: Failure modes 1 through 9 are explained in Table 1 and in the Detailed Description section.

Failures 3 and 8 Recovery Time

Failures 4 and 7 Recovery Time

Failure 6 Recovery Time

Minimum Hold Time of Go-to-Sleep Command

Disable Time of TXD Permanent Dominant Timer

Pulse Count Difference for Failures 1, 2, 5, 9 Detection (ERR Becomes Low)

Pulse Count Difference for Failures 1, 2, 5, 9 Recovery (ERR Becomes High)

PARAMETER SYM B O L CONDITIONS MIN TYP MAX UNITS

REC

HMIN

DIS(TXD

Count

Normal and low-power mode

Normal mode

Low-power mode

Normal mode

TXD

MAX3054 (250kbps), MAX3055 (125kbps)

MAX3056 (40kbps) 1.0 3.2 5.5

MAX3054 (250kbps) 1.7 5.6 9.5

MAX3055 (125kbps) 7 23 38

MAX3056 (40kbps) 22 70 119

MAX3054 (250kbps), MAX3055 (125kbps)

MAX3056 (40kbps) 1.0 3.2 5.5

MAX3054 (250kbps), MAX3055 (125kbps)

MAX3056 (40kbps) 390 1445 2500

MAX3054 (250kbps),

= 0

MAX3055 (125kbps)

MAX3056 (40kbps) 2.34 12.50

0.36 1.14 1.90

0.35 1.1 1.85

150 525 900

550µs

0.9 4.5

34 5

µs

+ 12 hidden pages

MAXIM MAX3054, MAX3055, MAX3056 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual