MAXIM MAX3050, MAX3057 Technical data

General Description

The MAX3050/MAX3057 interface between the CAN
protocol controller and the physical wires of the bus
lines in a controller area network (CAN). They are pri­marily intended for automotive systems requiring data
rates up to 2Mbps and feature ±80V fault protection
against short circuits in high-voltage power buses. They
provide differential transmit capability to the bus and
differential receive capability to the CAN controller.

The MAX3050/MAX3057 have four modes of operation:
high speed, slope control, standby, and shutdown.
High-speed mode allows data rates up to 2Mbps. In
slope-control mode, data rates are 40kbps to 500kbps,
so the effects of EMI are reduced, and unshielded
twisted or parallel cable can be used. In standby mode,
the transmitters are shut off and the receivers are put
into low-current mode. In shutdown mode, the transmit­ter and receiver are switched off.

The MAX3050 has an AutoShutdown™ function that
puts the device into a 15µA shutdown mode when the
bus or CAN controller is inactive for 4ms or longer.

The MAX3050/MAX3057 are available in an 8-pin SO
package and are specified for operation from -40°C to
+125°C.

Applications

Automotive Systems

HVAC Controls

Telecom 72V systems

Features

♦ ±80V Fault Protection for 42V Systems

♦ Four Operating Modes

High-Speed Operation Up to 2Mbps
Slope-Control Mode to Reduce EMI
(40kbps to 500kbps)
Standby Mode
Low-Current Shutdown Mode

♦ AutoShutdown when Device Is Inactive

(MAX3050)

♦ Automatic Wake-Up from Shutdown (MAX3050)

♦ Thermal Shutdown

♦ Current Limiting

♦ Fully Compatible with the ISO 11898 Standard*

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply

Current CAN Transceivers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

MAX3050
MAX3057

CAN

CONTROLLER

TXD

V

CC

RXD

RS

GND

CANH

CANL

V

CC

(100nF)

120Ω

120Ω

TX0

RX0

GND

0.1µF

30pF

24kΩ TO 180kΩ

SHDN

( ) ARE FOR 3050 ONLY.

Typical Operating Circuit

19-2670; Rev 0; 10/02

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.

Pin Configuration

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

* Pending completion of testing.

PART TEMP RANGE PIN-PACKAGE

MAX3050ASA -40°C to +125°C 8 SO

MAX3057ASA -40°C to +125°C 8 SO

TOP VIEW

TXD

V

RXD

1

2

MAX3050
MAX3057

3

CC

4

SO

87RS

6

5

CANHGND

CANL

SHDN

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +5V ±10%, RL= 60Ω, RS = GND, TA= T

MIN

to T

MAX

. Typical values are at VCC= +5V and TA= +25°C.)

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.

VCCto GND ............................................................ -0.3V to +6V

TXD, RS, RXD, SHDN to GND ....................-0.3V to (V

CC

+ 0.3V)

CANH, CANL to GND..............................................-80V to +80V

RXD Shorted to GND................................................. Continuous

Continuous Power Dissipation (T

A

= +70°C)

8-Pin SO (derate 5.9mW/°C above +70°C) .................470mW

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

Supply Current I

Quiescent Current Standby Mode I

Shutdown Supply Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

S

Q

QSHDN

Thermal-Shutdown Threshold 160 °C

Thermal-Shutdown Hysteresis 20 °C

TXD INPUT LEVELS

High-Level Input Voltage V

Low-Level Input Voltage V

High-Level Input Current I

Pullup Resistor R

IH

IL

IH

INTXD

CANH, CANL TRANSMITTER

V

Recessive Bus Voltage

Off-State Output Leakage I

CANH Output Voltage V

CANL Output Voltage V

Differential Output
(V

CANH

- V

CANL

)

CANH Short-Circuit Current I

CANL Short-Circuit Current I

CANH,

V

CANL

LO

CANHVTXD

CANL

∆V

CANH

V

CANL

SC

SC

Dominant (Note 1) 56 72

Dominant no load 6

Recessive (Note 1) 3.6 5.5

Recessive no load 5.5

V

= V

RS

CC

SHDN = GND 15 30 µA

V

= V

TXD

CC

V

= VCC, no load 2 3 V

TXD

-2V < V

CANH

SHDN = GND, V

-80V < V

CANH

SHDN = GND, V

= 0 3.0 V

V

= 0 0 2.0 V

TXD

V

= 0 1.5 5

TXD

,

V

= 0, RL = 45Ω 1.5

TXD

V

= VCC, no load -500 +50 mV

TXD

V

= -5V -200 mA

CANH

V

= 18V 200 mA

CANL

125 260 µA

2V

0.4 V

1µA

20 kΩ

, V

< +7V

CANL

, V

TXD

CANL

TXD

= V

< +80V

= V

CC

CC

-2 +1

-4 +4

CC

mA

mA

V

V

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply

Current CAN Transceivers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V ±10%, RL= 60Ω, RS = GND, TA= T

MIN

to T

MAX

. Typical values are at VCC= +5V and TA= +25°C.)

)

DC BUS RECEIVER (V

Differential Input Voltage
(Recessive)

Differential Input Voltage
(Dominant)

Differential Input Hysteresis V

CANH Input Wake-Up Voltage
Threshold

RXD High-Level Output Voltage V

RXD Low-Level Output Voltage V

CANH and CANL Input
Resistance

Differential Input Resistance R

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

= VCC; CANH and CANL externally driven; -2V < V

TXD

V

DIFF

V

DIFF

DIFF(HYST

V

CANH

(SHDN)

OH

OL

R

I

DIFF

-7V < V

-7V < V

SHDN = GND, V

, V

CANH

CANH

< +12V -1.0 +0.5 V

CANL

, V

< +12V 0.9 3.3 V

CANL

= V

TXD

I = -100µA

I = 10mA 0.8

I = 5mA 0.4

, V

CANH

< +7V, unless otherwise specified)

CANL

150 mV

(MAX3050) 6 9 V

CC

0.8

✕

V

CC

525kΩ

10 100 kΩ

V

V

MODE SELECTION (RS)

Input Voltage for High Speed V

Input Voltage for Standby V

Slope-Control Mode Voltage V

Slope-Control Mode Current I

Standby Mode I

High-Speed Mode Current I

SLP

STBY

SLOPERRS

SLOPE

STBY

HS

RRS = 24kΩ to 180kΩ -200 -10 µA

V

0.75 ✕
V

CC

0.4

= 24kΩ to 180kΩ

✕

V

CC

-10 +10 µA

= 0 -500 µA

RS

0.3 ✕
V

CC

0.6 ✕
V

CC

V

V

V

SHUTDOWN

SHDN Input Pullup Resistor R

INSHDN

MAX3057 500 900 kΩ

SHDN Input Voltage High 2V
SHDN Input Voltage Low 0.5 V

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

4 _______________________________________________________________________________________

Note 1: As defined by ISO, bus value is one of two complementary logical values: dominant or recessive. The dominant value repre-

sents the logical 1 and the recessive represents the logical 0. During the simultaneous transmission of the dominant and
recessive bits, the resulting bus value is dominant. For MAX3050 and MAX3057 values, see the truth table in the
Transmitter and Receiver sections.

TIMING CHARACTERISTICS

(VCC= +5V ±10%, RL= 60Ω, CL= 100pF, TA= T

MIN

to T

MAX

. Typical values are at VCC= +5V and TA= +25°C.) (Figures 1, 2, and 3)

TIMING

Minimum Bit Time t

Delay TXD to Bus Active t

Delay TXD to Bus Inactive t

Delay TXD to Receiver Active t

Delay TXD to Receiver Inactive t

Bus Dominant to RXD Low Standby mode 10 µs

Time to Wake Up: CANH > 9V t

Time to Sleep Mode when Bus Is
Recessive

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

BIT

ONTXDVRS

OFFTXDVRS

ONRXD

OFFRXD

WAKE

t

SHDN

V

RS

RRS = 24kΩ (500kbps) 2

RRS = 100kΩ (125kbps) 8

RRS = 180kΩ (62.5kbps) 25

V

RS

RRS = 24kΩ (500kbps) 0.4

RRS = 100kΩ (125kbps) 1.6

RRS = 180kΩ (62.5kbps) 5.0

V

RS

RRS = 24kΩ (500kbps) 0.45

RRS = 100kΩ (125kbps) 1.6

RRS = 180kΩ (62.5kbps) 5.0

RRS = 24kΩ (500kbps) 14

RRS = 100kΩ (125kbps) 7Differential Output Slew Rate SR

R

RS

SHDN = GND, V

C

SHDN

= 0 (2Mbps) 0.5

= 0 40 ns

= 0 75 ns

= 0 (2Mbps) 120 ns

= 0 (2Mbps) 130 ns

= 180kΩ (62.5kbps) 1.6

= V

TXD

= 100nF (MAX3050) 10 47 ms

(MAX3050) 10 µs

CC

µs

µs

µs

V/µs

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply

Current CAN Transceivers

_______________________________________________________________________________________ 5

Figure 1. AC Test Circuit

Figure 2. Timing Diagram for Dynamic Characteristics

Figure 3. Time to Wake Up (t

WAKE

) (MAX3050)

CAN

CONTROLLER

TXD

CANH

CANL

CANH - CANL

GND

TX0

RX0

DOMINANT

0.1µF

30pF

24kΩ TO 180kΩ

V

CC

0.5V

V

CC

TXD

RXD

RS

RECESSIVE

MAX3050
MAX3057

0.9V

GND

CANH

CANL

SHDN

100pF

(100nF)

CANH

V

SHDN

120Ω

120Ω

( ) ARE FOR MAX3050 ONLY.

V

= 2V

SHDN

9V

V

/2

RXD

t

ONTXD

t

ONRXD

CC

V

/2

CC

t

OFFTXD

t

OFFRXD

t

WAKE

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

6 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= 5V, RL= 60Ω, CL= 100pF, TA= +25°C, unless otherwise specified.)

MAX3057

SLEW RATE vs. R

RS

MAX3050 toc01

RRS (kΩ)

SLEW RATE (V/µs)

1621248648

5

10

15

20

25

0

10 200

TA = -40°C

TA = +25°C

TA = -+125°C

MAX3050 toc02

SLEEP TIME (ms)

300200100

20

40

60

80

100

0

0 400

MAX3050

AutoShutdown vs. C

SHDN

C

SHDN

(nF)

SUPPLY CURRENT vs. DATA RATE

MAX3050 toc03

DATA RATE (kbps)

SUPPLY CURRENT (mA)

16001200800400

27

29

31

33

35

25

0 2000

TA = +125°C

TA = +25°C

TA = -40°C

RECEIVER PROPAGATION DELAY

vs. TEMPERATURE, R

RS

= GND

MAX3050 toc04

TEMPERATURE (°C)

RECEIVER PROPAGATION DELAY (ns)

905520-15

25

35

45

55

65

15

-50 125

RECESSIVE

DOMINANT

DRIVER PROPAGATION DELAY

vs. TEMPERATURE, R

RS

= GND

MAX3050 toc05

TEMPERATURE (°C)

DRIVER PROPAGATION DELAY (ns)

925926-7

20

25

30

35

15

-40 125

RECESSIVE

DOMINANT

RECEIVER OUTPUT LOW

vs. OUTPUT CURRENT

MAX3050 toc06

OUTPUT CURRENT (mA)

VOLTAGE RXD (mV)

2015105

400

800

1200

1600

0

025

TA = +125°C

TA = +25°C

TA = -40°C

RECEIVER OUTPUT HIGH

vs. OUTPUT CURRENT

MAX3050 toc07

OUTPUT CURRENT (mA)

VOLTAGE (V

CC

- RXD) (mV)

2015105

600

1200

1800

3000

2400

0

025

TA = +125°C

TA = +25°C

TA = -40°C

DIFFERENTIAL VOLTAGE

vs. DIFFERENTIAL LOAD R

L

MAX3050 toc08

DIFFERENTIAL LOAD RL (Ω)

DIFFERENTIAL VOLTAGE (V)

25020015010050

1

2

3

4

0

0 300

TA = +125°C

TA = +25°C

TA = -40°C

SUPPLY CURRENT

vs. TEMPERATURE IN STANDBY MODE

MAX3050 toc09

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

905520-15

75

100

125

150

175

200

50

-50 125

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply

Current CAN Transceivers

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(VCC= 5V, RL= 60Ω, CL= 100pF, TA= +25°C, unless otherwise specified.)

Pin Description

LOOPBACK PROPAGATION DELAY vs. R

1400

1200

1000

800

600

400

LOOPBACK PROPAGATION DELAY (ns)

200

0

0 200

RRS (kΩ)

DRIVER PROPAGATION DELAY

15010050

MAX3050 toc12

RS

MAX3050 toc10

TXD
2V/div

CANH - CANL

RECEIVER PROPAGATION DELAY

40ns/div

DRIVER PROPAGATION DELAY

MAX3050 toc11

MAX3050 toc13

CANH - CANL

RXD
2V/div

TXD
5V/div

= 24kΩ

R

RS

= 100kΩ

R

RS

= 180kΩ

R

RS

RRS = GND

40ns/div

PIN NAME FUNCTION

1µs/div

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

2 GND Ground

3VCCSupply Voltage. Bypass V

to GND with a 0.1µF capacitor.

CC

4 RXD Receive Data Output. RXD is a CMOS/TTL-compatible output from the physical bus lines CANH and CANL.

Shutdown Input. Drive SHDN low to put into shutdown mode (MAX3057). Place a capacitor from SHDN to

5 SHDN

ground to utilize the AutoShutdown feature of MAX3050. See the Shutdown and AutoShutdown sections for a
full explanation of SHDN behavior.

6 CANL CAN Bus Line Low. CANL is fault protected to ±80V.

7 CANH CAN Bus Line High. CANH is fault protected to ±80V.

8RS

Mode Select Pin. Drive RS low or connect to GND for high-speed operation. Connect a resistor from RS to
GND to control output slope. Drive RS high to put into standby mode. See the Mode Selection section.

MAX3050/MAX3057

Detailed Description

The MAX3050/MAX3057 interface between the protocol
controller and the physical wires of the bus lines in a
CAN. They are primarily intended for automotive appli­cations requiring data rates up to 2Mbps and feature
±80V fault protection against shorts in high-voltage sys­tems. This fault protection allows the devices to with­stand up to ±80V with respect to ground with no
damage to the device. The built-in fault tolerance
allows the device to survive in industrial and automotive
environments with no external protection devices. The
devices provide differential transmit capability to the
bus and differential receive capability to the CAN con­troller (Figure 4).

The device has four modes of operation: high speed,
slope control, standby, and shutdown. In high-speed
mode, slew rates are not limited, making 2Mbps transmis­sion speeds possible. Slew rates are controlled in slope­control mode, minimizing EMI and allowing use of
unshielded twisted or parallel cable. In standby mode,
receivers are active and transmitters are in high imped­ance. In shutdown mode, transmitters and receivers are
turned off.

The transceivers are designed to operate from a single
+5V supply and draw 56mA of supply current in domi­nant state and 3.6mA in recessive state. In standby
mode, supply current is reduced to 125µA. In shutdown
mode, supply current is 15µA.

CANH and CANL are output short-circuit current limited
and are protected against excessive power dissipation
by thermal-shutdown circuitry that places the driver
outputs into a high-impedance state.

Fault Protection

The MAX3050/MAX3057 feature ±80V fault protection.
This extended voltage range of CANH and CANL bus
lines allows use in high-voltage systems and communi­cation with high-voltage buses. If data is transmitting at
2Mbps, the fault protection is reduced to ±70V.

Transmitter

The transmitter converts a single-ended input (TXD)
from the CAN controller to differential outputs for the
bus lines (CANH, CANL). The truth table for the trans­mitter and receiver is given in Table 1.

±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

8 _______________________________________________________________________________________

Figure 4. Functional Diagram

THERMAL

SHUTDOWN

V

CC

MAX3050

CANH

TXD

RS

RXD

MODE

SELECTION

TRANSMITTER

CONTROL

RECEIVER

0.75V

7.5V

WAKE

AutoShutdown

CANL

GND

SHDN

High Speed

Connect RS to ground to set the MAX3050/MAX3057 to
high-speed mode. When operating in high-speed
mode, the MAX3050/MAX3057 can achieve transmis­sion rates of up to 2Mbps. Line drivers are switched on
and off as quickly as possible. However, in this mode,
no measures are taken to limit the rise and fall slope of
the data signal, allowing for potential EMI emissions. If
using the MAX3050/MAX3057 in high-speed mode, use
shielded twisted-pair cable to avoid EMI problems.

Slope Control

Connect a resistor from RS to ground to select slope­control mode (Table 2). In slope-control mode, the
gates of the line drivers are charged with a controlled
current, proportional to the resistor connected to the RS
pin. Transmission speed ranges from 40kbps to
500kbps. Controlling the rise and fall slope reduces
EMI and allows the use of an unshielded twisted pair or
a parallel pair of wires as bus lines. The transfer func­tion for selecting the resistor value is given by:

RRS(kΩ) = 12000/speed (in kbps)

See the Slew Rate vs. RRSgraph in the Typical
Operating Characteristics section.

Receiver

The receiver reads differential input from the bus lines
(CANH, CANL) and transfers this data as a single­ended output (RXD) to the CAN controller. It consists of
a comparator that senses the difference ∆V = (CANH ­CANL) with respect to an internal threshold of 0.7V. If
this difference is positive (i.e., ∆V > 0.7V), a logic low is

present at the RXD pin. If negative (i.e., ∆V < 0.7V), a
logic high is present.

The receiver always echoes the transmitted data.

The CANH and CANL common-mode range is -7V to
+12V. RXD is logic high when CANH and CANL are
shorted or terminated and undriven. If the differential
receiver input voltage (CANH - CANL) is less than or
equal to 0.5V, RXD is logic high. If (CANH - CANL) is
greater than or equal to 0.9V, RXD is logic low.

Standby

If a logic high level is applied to RS, the MAX3050/
MAX3057 enter a low-current standby mode. In this
mode, the transmitter is switched off and the receiver is
switched to a low-current state. If dominant bits are
detected, RXD switches to a low level. The microcon­troller should react to this condition by switching the
transceiver back to normal operation (through RS). Due
to the reduced power mode, the receiver is slower in
standby mode, and the first message may be lost at
higher bit rates.

Thermal Shutdown

If the junction temperature exceeds +160°C, the device
is switched off. The hysteresis is approximately 20°C,
disabling thermal shutdown once the temperature
reaches +140°C.

Shutdown (MAX3057)

Drive SHDN low to enter shutdown mode. In shutdown
mode, the device is switched off. The outputs are high
impedance to ±80V. The MAX3057 features a pullup at
SHDN. If shutdown is forced low and then left floating,
the device switches back to normal operating mode.

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply

Current CAN Transceivers

_______________________________________________________________________________________ 9

Table 1. Transmitter and Receiver Truth Table

X = Don’t care.
*As defined by ISO, bus value is one of two complementary logical values: dominant or recessive. The dominant value represents the
logical 0 and the recessive represents the logical 1. During the simultaneous transmission of the dominant and recessive bits, the result­ing bus value is dominant.

Table 2. Mode Selection Truth Table

TXD RS SHDN CANH CANL BUS STATE RXD

0V

1 or float VRS < 0.75 ✕ V

XV

XXV

< 0.75 ✕ V

RS

> 0.75 ✕ V

RS

CC

CC

CC

V

> 1.5V High Low Dominant* 0

S HDN

V

> 1.5V 5kΩ to 25kΩ to VCC/2 5kΩ to 25kΩ to VCC/2 Recessive* 1

S HDN

X Floating Floating Floating 1

< 0.5V Floating Floating Floating 1

S H D N

CONDITION FORCED AT PIN RS MODE RESULTING CURRENT AT RS

VRS < 0.3 ✕ V

0.4 ✕ VCC< VRS < 0.6 ✕ V

VRS > 0.75 ✕ V

CC

CC

CC

High speed |IRs| < 500µA

Slope control 10µA < |IRs| < 200µA

Standby |IRs| < 10µA

MAX3050/MAX3057

AutoShutdown (MAX3050)

To manage power consumption, AutoShutdown puts
the device into shutdown mode after the device has
been inactive for a period of time. The value of an
external capacitor (C

SHDN

) connected to SHDN deter-

mines the threshold of inactivity time, after which the
AutoShutdown triggers. Floating SHDN allows the
MAX3050 to automatically change from active mode to
shutdown.

Use a 100nF capacitor as C

SHDN

for a typical thresh­old of 20ms. Change the capacitor value according to
the following equation to change the threshold time
period.

V

SHDN

is the threshold of SHDN guaranteed to be less

than 2V in the Electrical Characteristics table. Drive
SHDN high to turn the MAX3050 on and disable
AutoShutdown.

When the MAX3050 is in shutdown mode, only the
wake-up comparator is active, and normal bus commu­nication is ignored. The remote master of the CAN sys­tem wakes up the MAX3050 with a signal greater than
9V on CANH. Internal circuitry in the MAX3050 puts the
device in normal operation by driving SHDN high.

The MAX3057 does not have the AutoShutdown feature.

Driver Output Protection

The MAX3050/MAX3057 have several features that pro­tect them from damage. Thermal shutdown switches off
the device and puts CANH and CANL into high imped­ance if the junction temperature exceeds +160°C.
Thermal protection is needed particularly when a bus
line is short circuited. The hysteresis for the thermal
shutdown is approximately 20°C.

Additionally, a current-limiting circuit protects the trans­mitter output stage against short-circuits to positive and
negative battery voltage. Although the power dissipa­tion increases during this fault condition, this feature
prevents destruction of the transmitter output stage.

±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

10 ______________________________________________________________________________________

Figure 5. FFT Dominant Bus at 2Mbps

Figure 6. FFT Recessive Bus at 2Mbps

Figure 7. FFT Dominant Bus at 500kbps

CnF

SHDN

002

time s

.()

()

=

×µ

VV

−

()

CC

SHDN

CANH - CANL
1V/div

FFT
500mV/div

CANH - CANL
1V/div

FFT
200mV/div

CANH - CANL
1V/div

FFT
500mV/div

Applications Information

Reduced EMI and Reflections

In slope-control mode, the CANH and CANL outputs
are slew-rate limited, minimizing EMI and reducing
reflections caused by improperly terminated cables. In
general, a transmitter’s rise time relates directly to the
length of an unterminated stub, which can be driven
with only minor waveform reflections. The following
equation expresses this relationship conservatively:

Length = t

RISE

/ (15ns/ft)

where t

RISE

is the transmitter’s rise time.

The MAX3050 and MAX3057 require no special layout
considerations beyond common practices. Bypass V

CC

to GND with a 0.1µF ceramic capacitor mounted close
to the IC with short lead lengths and wide trace widths.

Chip Information

TRANSISTOR COUNT: 1214

PROCESS: BiCMOS

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply

Current CAN Transceivers

______________________________________________________________________________________ 11

Figure 8. FFT Recessive Bus at 500kbps

Figure 9. FFT Dominant Bus at 62.5kbps

Figure 10. FFT Recessive Bus at 62.5kbps

CANH - CANL
1V/div

FFT
200mV/div

CANH - CANL
1V/div

FFT
500mV/div

CANH - CANL
1V/div

FFT
200mV/div

MAX3050/MAX3057

±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)

N

HE

1

TOP VIEW

D

A

e

FRONT VIEW

B

A1

INCHES

DIM

MIN

0.053A

0.004

A1

0.014

B

0.007

C
e 0.050 BSC 1.27 BSC

0.150

E
H 0.2440.228 5.80 6.20

0.016L

VARIATIONS:

INCHES

MINDIM

D

0.189 0.197 AA5.004.80 8

0.337 0.344 AB8.758.55 14

D

C

L

0-8

MAX

0.069

0.010

0.019

0.010

0.157

0.050

MAX

0.3940.386D

MILLIMETERS

MAX

MIN

1.35

1.75

0.10

0.25

0.35

0.49

0.19

0.25

3.80 4.00

0.40 1.27

MILLIMETERS

MAX

MIN

9.80 10.00

SOICN .EPS

N MS012

16 AC

SIDE VIEW

PROPRIETARY INFORMATION

TITLE:

PACKAGE OUTLINE, .150" SOIC

REV.DOCUMENT CONTROL NO.APPROVAL

21-0041

1

B

1