MAXIM MAX3058, MAX3059 User Manual

General Description

The MAX3058/MAX3059 interface between the con­troller area network (CAN) protocol controller and the
physical wires of the bus lines in a CAN. They are pri­marily intended for printer and telecom backplane appli­cations requiring data rates up to 1Mbps. These
devices provide differential transmit capability to the bus
and differential receive capability to the CAN controller.

The MAX3058 output common-mode range is from -7V
to +12V. The MAX3059 output common-mode range is
from 0V to VCC. The MAX3059 contains an internal
switch termination resistor that makes it ideal for JetLink
applications.

The MAX3058 features four different modes of opera­tion: high speed, slope control, standby, and shutdown.
The MAX3059 features three different modes of opera­tion: high speed, slope control, and shutdown. High­speed mode allows data rates up to 1Mbps. In
slope-control mode, the slew rate may be optimized for
data rates up 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 MAX3058/MAX3059 are available in an 8-pin SO
package and are specified over the -40°C to +125°C
temperature range.

Applications

Printers JetLink

Industrial Control Networks

Telecom Backplane

Consumer Applications

Features

♦ Four Operating Modes

High-Speed Operation Up to 1Mbps
Slope-Control Mode to Reduce EMI (40kbps to
500kbps)
Low-Current Shutdown Mode
Standby Mode (MAX3058 Only)

♦ Thermal Shutdown

♦ Current Limiting

♦ ESD Protection

±12kV Human Body Model

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current

CAN Transceivers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2939; Rev 1; 9/03

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 Configurations

PART

TERMINATION

RESISTOR

STANDBY

MAX3058ASA No Yes

MAX3059ASA Yes No

Selector Guide

Typical Operating Circuit appears at end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX3058ASA -40°C to +125°C 8 SO

MAX3059ASA -40°C to +125°C 8 SO

TOP VIEW

1

TXD

2

MAX3058

3

V

CC

4

SO

87RS

6

5

CANHGND

CANL

SHDNRXD

TXD

V

1

2

MAX3059

3

CC

4

SO

87RS

6

5

CANHGND

CANL

TERMRXD

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current
CAN Transceivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +5V ±10%, TA= T

MIN

to T

MAX

, RL= 60Ω, CL= 100pF. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)

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, SHDN, TERM to GND................................-0.3V to +6V

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

CANH, CANL to GND (MAX3058).......................-7.5V to +12.5V

CANH, CANL to GND (MAX3059)..............-0.3V to (V

CC

+ 0.3V)

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

Maximum Junction Temperature .....................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Current I

Quiescent Current Standby Mode I

Thermal-Shutdown Threshold V

Thermal-Shutdown Hysteresis 25 °C

TXD INPUT LEVELS

High-Level Input Voltage V

Low-Level Input Voltage V

Input Capacitance C

Pullup Resistor R

TERM INPUT LEVELS (MAX3059)

High-Level Input Voltage V

Low-Level Input Voltage V

TERM Pullup Resistor R

CANH, CANL TRANSMITTER

Recessive Bus Voltage

CANH Output Voltage V

CANL Output Voltage V

Differential Output
(V

CANH

- V

CANL

)

Dominant 40 70

S

Recessive 2 5

Standby, MAX3058 15 80 µA

Q

V

= VCC, MAX3058 5

SHDN

V

= VRS = VCC, MAX3059 10Shutdown Current I

SHDN

TSH

IH

IL

IN

INTXD

TRH

TRL

PU

V

CANH

V

CANL

CANHVTXD

CANL

∆V

CANH

V

CANL

TERM

V

= 0V, VRS = VCC, MAX3059 150

TERM

(Note 3) 5 20 pF

V

= VCC, no load 2 3 V

TXD

,

V

= VCC, no load, VRS = V

TXD

CC

(standby mode), MAX3058

= 0V 2.75

V

= 0V 0.5 2.25 V

TXD

V

= 0V, V

TXD

V

= 0V, V

TXD

,

V

= 0V, RL = 45Ω 1.2 3

TXD

V

= VCC, no load -500 +50 mV

TXD

= 5V ±5% 1.5 3

CC

= 5V ±10% 1.5 3.2

CC

160 °C

2V

0.8 V

50 100 kΩ

2V

0.8 V

50 100 kΩ

-100 +100 mV

V

-

CC

0.8V

mA

µA

V

V

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current

CAN Transceivers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V ±10%, TA= T

MIN

to T

MAX

, RL= 60Ω, CL= 100pF. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CANH Short-Circuit Current I

CANL Short-Circuit Current I

Termination Resistor R

RXD OUTPUT LEVELS

RXD High-Output Voltage Level V

RXD Low-Output Voltage Level V

DC BUS RECEIVER (Note 2)

Differential Input Voltage
(Recessive)

Differential Input Voltage
(Dominant)

Differential Input Hysteresis V

CANH and CANL Input
Resistance

Differential Input Resistance R

MODE SELECTION (RS)

Input Voltage for High Speed V

Input Voltage for Standby

Slope-Control Mode Voltage V

Slope-Control Mode Current I

High-Speed Mode Current I

SHUTDOWN (MAX3058)

SHDN Input Voltage High V

SHDN Input Voltage Low V

SHDN Pulldown Resistor R

CANHSC

CANLSC

TERM

OH

OL

-7V ≤ V

V

CANH

VCC ≤ V

V

CANL

V

TERM

I = -100µA

I = 1.6mA 0.4 V

≤ 0V, MAX3058 -200 -30

CANH

= 0V, MAX3059 -200 -30

≤ 12V, MAX3058 30 200

CANL

= VCC, MAX3059 30 200

= VCC, MAX3059 108 120 132 Ω

MAX3058 -17 +0.5

V

DIFF

MAX3058, VRS = VCC (standby mode) -17 +0.5

MAX3059 -V

MAX3058 0.9 17

V

DIFF

MAX3058, VRS = VCC (standby mode) 1.1 17

MAX3059 0.9 V

DIFF(HYST

R

I

DIFF

SLP

V

STBY

V

SHDN

SLOPERRS

SLOPE

HS

SHDNH

SHDNL

INDHDN

MAX3058

MAX3059

= 25kΩ to 200kΩ

RRS = 25kΩ to 200kΩ -10 -200 µA

VRS = 0V -500 µA

mA

mA

0.8 x
V

CC

CC

100 mV

525kΩ

10 100 kΩ

0.75 x
V

CC

0.4 x
V

CC

2V

50 100 kΩ

V

CC

+0.5

CC

0.3 x
V

CC

0.6 x
V

CC

0.8 V

V

V

V

V

V

V

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current
CAN Transceivers

4 _______________________________________________________________________________________

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

unless otherwise noted.

Note 2: (V

TXD

= VCC; CANH and CANL externally driven; -7V < V

CANH

, V

CANL

< 12V for MAX3058; 0V < V

CANH

, V

CANL

< VCCfor

MAX3059, unless otherwise specified).

Note 3: Specification guaranteed by design, not production tested.
Note 4: No other devices on the BUS.
Note 5: BUS externally driven.

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.)

Delay TXD to Bus Active,
Figure 1

Delay TXD to Bus Inactive,
Figure 1

Delay Bus to Receiver Active,
Figure 1

Delay Bus to Receiver Inactive,
Figure 1

Differential Output Slew Rate SR

Bus Dominant to RXD Active t

Standby to Receiver Active t

SHDN to Bus Inactive t

SHDN to Receiver Active t

RS to Bus Inactive t

RS to Receiver Active t

TERM to Resistor Switched On t

TERM to Resistor Switched Off t

ESD Protection Human Body Model 12 ±kV

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

t

ONTXD

t

OFFTXD

t

ONRXD

t

OFFRXD

DRXDL

SBRXDL

OFFSHDN

ONSHDN

OFFSHDN

ONSHDN

ONRT

OFFRT

VRS = 0V (≤ 1Mbps) 50

RRS = 25kΩ (≤ 500kbps) 125

RRS = 100kΩ (≤ 125kbps) 450

RRS = 200kΩ (≤ 62.5kbps) 700

VRS = 0V (≤ 1Mbps) 70

RRS = 25kΩ (≤ 500kbps) 180

RRS = 100kΩ (≤ 125kbps) 500

RRS = 200kΩ (≤ 62.5kbps) 1000

VRS = 0V (≤ 1Mbps) 80

RRS = 25kΩ (≤ 500kbps) 150

RRS = 100kΩ (≤ 125kbps) 500

RRS = 200kΩ (≤ 62.5kbps) 800

VRS = 0V (≤ 1Mbps) 100

RRS = 25kΩ (≤ 500kbps) 210

RRS = 100kΩ (≤ 125kbps) 500

RRS = 200kΩ (≤ 62.5kbps) 1100

VRS = 0V (≤ 1Mbps) 100

RRS = 25kΩ (≤ 500kbps) 7

RRS = 100kΩ (≤ 125kbps) 1.6

R

RS

VRS > 0.8 x VCC (standby), MAX3058,
Figure 2

BUS dominant, MAX3058, Figure 2 4 µs

TXD = GND, MAX3058, Figure 3 (Note 4) 1 µs

BU S d om i nant, M AX 3058, Fi g ur e 3 ( N ote 5) 4 µs

TXD = GND, MAX3059, Figure 3 (Note 4) 1 µs

BUS dominant, MAX3059, Fi g ur e 3 ( N ote 5) 4 µs

VRS = VCC (part in shutdown), MAX3059,
Figure 4

VRS = VCC (part in shutdown),
MAX3059, Figure 4

= 200kΩ (≤ 62.5kbps) 0.8

400 ns

400 ns

ns

ns

ns

ns

V/µs

1µs

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current

CAN Transceivers

_______________________________________________________________________________________ 5

Figure 1. Timing Diagram

Figure 2. Timing Diagram for Standby Signal (MAX3058)

Figure 3. Timing Diagram for Shutdown Signal

Figure 4. Test Circuit and Diagram for TERM Timing (MAX3059)

Timing Diagrams

V

TXD

DIFF

RXD

VCC/2 VCC/2

t

ONTXD

t

ONRXD

VCC/2 VCC/2

SHDN

V

CC

/2

t

OFFSHDN

0.9V

t

OFFTXD

t

V

CC

OFFRXD

/2

t

ONSHDN

0.5V

RS

V

DIFF

RXD

x 0.75

V

CC

t

SBRXDL

VCC/2 VCC/2

CANH

CANL

BUS EXTERNALLY

500Ω

C

L

500Ω

DRIVEN

1.1V

V

CC

t

DRXDL

V

DIFF

0.5V

RXD

BUS EXTERNALLY

DRIVEN

TERM

/2

V

CC

CANH

VCC/2 VCC/2

t

ONRT

- 1V VCC - 1V

V

CC

t

OFFRT

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current
CAN Transceivers

6 _______________________________________________________________________________________

Typical Operating Characteristics

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

SLEW RATE vs. RRS AT 100kbps

MAX3058/59 toc01

RRS (kΩ)

SLEW RATE (V/µs)

1621248648

5

10

15

20

25

0

10 200

SUPPLY CURRENT vs. DATA RATE

MAX3058/59 toc02

DATA RATE (kbps)

SUPPLY CURRENT (mA)

900800700600500400300200100

15

20

25

30

35

10

0 1000

TA = +125°C

TA = +25°C

TA = -40°C

MAX3059

SUPPLY CURRENT vs. TEMPERATURE

IN SHUTDOWN MODE (TERM = GND)

MAX3058/59 toc03

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

1109565 80-10 5 20 35 50-25

66

67

68

69

70

71

72

73

74

75

65

-40 125

MAX3059

SUPPLY CURRENT vs. TEMPERATURE

IN SHUTDOWN MODE (TERM = V

CC

)

MAX3058/59 toc04

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

1109565 80-10 5 20 35 50-25

1

2

3

4

5

6

7

8

9

10

0

-40 125

RECEIVER PROPAGATION DELAY

vs. TEMPERATURE

MAX3058/59 toc05

TEMPERATURE (°C)

RECEIVER PROPAGATION DELAY (ns)

925926-7

10

20

30

40

50

60

70

80

90

100

0

-40 125

RRS = GND

RECESSIVE

DOMINANT

DRIVER PROPAGATION DELAY

vs. TEMPERATURE

MAX3058/59 toc06

DRIVER PROPAGATION DELAY (ns)

925926-7

10

20

30

40

50

0

-40 125

RRS = GND

RECESSIVE

DOMINANT

RECEIVER OUTPUT LOW

vs. OUTPUT CURRENT

MAX3058/59 toc08

OUTPUT CURRENT (mA)

VOLTAGE RXD (V)

22191613

0.5

1.0

1.5

2.0

2.5

3.0

0

10 25

TA = +125°C

TA = +25°C

TA = -40°C

MAX3058

SUPPLY CURRENT

vs. TEMPERATURE IN SHUTDOWN

MAX3058/59 toc07

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

925926-7

1

2

3

4

5

0

-40 125

SHDN = V

CC

RS = GND
TXD = V

CC

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current

CAN Transceivers

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

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

RECEIVER OUTPUT HIGH

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

RECEIVER OUTPUT HIGH (VCC - RXD) (V)

0.5

0

vs. OUTPUT CURRENT

TA = +125°C

TA = +25°C

TA = -40°C

10 23

OUTPUT CURRENT (mA)

RECEIVER PROPAGATION DELAY

222119 2013 14 15 16 17 1811 12

MAX3058/59 toc11

MAX3058/59 toc09

CANH ­CANL

DIFFERENTIAL VOLTAGE

vs. DIFFERENTIAL LOAD RL

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

DIFFERENTIAL VOLTAGE (V)

1.0

0.5

0

0

TA = -40°C

TA = +25°C

DIFFERENTIAL LOAD RL (Ω)

DRIVER PROPAGATION DELAY

TA = +125°C

150 200 250 30050 100

MAX3058/59 toc12

MAX3058/59 toc10

TXD
5V/div

R

=

RS

24kΩ

200ns/div

DRIVER PROPAGATION DELAY (RS = GND)

200ns/div

MAX3058/59 toc13

RXD
2V/div

TXD
5V/div

CANH ­CANL

1µs/div

LOOPBACK PROPAGATION DELAY

vs. R

900

800

700

600

500

400

300

200

LOOPBACK PROPAGATION DELAY (ns)

100

0

0 200

RS

RRS (kΩ)

=

R

RS

100kΩ

=

R

RS

180kΩ

MAX3058/59 toc14

180160120 14040 60 80 10020

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current
CAN Transceivers

8 _______________________________________________________________________________________

Pin Description

Functional Diagram

PIN

MAX3058 MAX3059

1 1 TXD

NAME FUNCTION

Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller. TXD has an
internal 75kΩ pullup resistor.

2 2 GND Ground

33VCCSupply Voltage. Bypass VCC to GND with a 0.1µF capacitor.

4 4 RXD Receive Data Output. RXD is a CMOS/TTL-compatible output.

5 — SHDN

Shutdown Input, CMOS/TTL-Compatible Input. Drive SHDN high to put the IC into shutdown
mode. SHDN has an internal 75kΩ pulldown resistor to GND.

6 6 CANL CAN Bus Line Low

7 7 CANH CAN Bus Line High

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

88RS

resistor between RS and GND to control output slope. For the MAX3058, drive RS high to put
into standby mode. (see Mode Selection section). For the MAX3059, drive RS above 0.75 x V
to select shutdown mode.

Terminate Input, CMOS/TTL Compatible. Drive TERM high or leave floating to terminate the

— 5 TERM

device with a 120Ω across the CANH and CANL. Drive TERM low to disconnect this resistor.
TERM has an internal 75kΩ pullup resistor to V

CC

CC

.

V

CC

MAX3058/

MAX3059

V

CC/2

0.75V

CANH

R

b

+

-

R

b

R

T

SHUTDOWN

CANL

V

CC

TERM
(MAX3059)

GND
SHDN

(MAX3058)

TXD

RXD

THERMAL

SHUTDOWN

V

CC

TRANSMITTER

CONTROL

RS

MODE

SELECTION

RECEIVER

Detailed Description

The MAX3058/MAX3059 interface between the protocol
controller and the physical wires of the bus lines in a
CAN. They are primarily intended for printer and tele­com backplane applications requiring data rates up to
1Mbps. These devices provide differential transmit
capability to the bus and differential receive capability
to the CAN controller.

The MAX3058 output common-mode range is from -7V
to +12V. The MAX3059 output common-mode range is
from 0V to VCC. The MAX3059 contains an internal
switch termination resistor that makes it ideal for JetLink
applications.

The MAX3058 features four different modes of opera­tion: high-speed, slope control, standby, and shut­down. The MAX3059 features three different modes of
operation: high speed, slope control, and shutdown.
High-speed mode allows data rates up to 1Mbps. In
slope-control mode, the slew rate may be optimized for
data rates up 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 transceivers operate from a single +5V supply and
draw 40mA of supply current in dominant state and 2mA
in recessive state. In standby mode, supply current is
reduced to 15µA. In shutdown mode, supply current is
1µA for the MAX3058 and 5µA for the MAX3059.

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.

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 Tables 1 and 2.

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current

CAN Transceivers

_______________________________________________________________________________________ 9

Table 1. Transmitter and Receiver Truth Table for MAX3058 When Not Connected to
the Bus

Table 2. Transmitter and Receiver Truth Table for MAX3059 When Not Connected to
the Bus

TXD RS SHDN CANH CANL BUS STATE RXD

Low VRS < 0.75 x V

High or float VRS < 0.75 x V

XV

X X High Floating Floating Floating High

> 0.75 x V

RS

CC

CC

CC

Low High Low Dominant Low

Low

Low

5kΩ to 25kΩ to

/2

V

CC

5kΩ to 25kΩ to

GND

5kΩ to 25kΩ

to VCC/2

5kΩ to 25kΩ

to GND

Recessive High

Recessive High

TXD RS TERM CANH CANL BUS STATE RXD

Low VRS < 0.75 x V

Low VRS < 0.75 x V

High or float VRS < 0.75 x V

High or float VRS < 0.75 x V

XV

XV

> 0.75 x V

RS

> 0.75 x V

RS

CC

CC

CC

CC

CC

CC

Low High Low Dominant Low

High

Low

High

Low Floating Floating Floating High

High

High Low

120Ω terminating resistor across

5kΩ to 25kΩ to

V

/2

CC

5kΩ to 25kΩ to

V

/2

CC

120Ω terminating resistor across

Floating Floating

120Ω terminating resistor across

5kΩ to 25kΩ to

VCC/2

5kΩ to 25kΩ to

VCC/2

Dominant Low

Recessive High

Recessive High

Floating High

MAX3058/MAX3059

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 > 0.7), a logic low is
present at RXD. If negative (i.e., ∆V < 0.7V), a logic
high is present. The receiver always echoes the CAN
BUS data.

The CANH and CANL common-mode range is -7V to
+12V for the MAX3058, and 0V to V

CC

for the
MAX3059. RXD is logic high when CANH and CANL
are either shorted, or terminated and undriven.

Mode Selection

High-Speed Mode

Connect RS to ground to set the MAX3058/MAX3059 to
high-speed mode. When operating in high-speed
mode, the MAX3058/MAX3059 can achieve transmis­sion rates of up to 1Mbps. In high-speed mode, use
shielded twisted-pair cable to avoid EMI problems.

Slope-Control Mode

Connect a resistor from RS to ground to select slope­control mode (Table 3). In slope-control mode, CANH
and CANL slew rates are controlled by the resistor con­nected to the RS pin. Maximum transmission speeds
are controlled by RRS, and range from 40kbps to
500kbps. Controlling the rise and fall slopes 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) ≈ 12,500/(maximum speed in kbps)

See the Slew Rate vs. RRSgraph in the Typical Oper-
ating Characteristics.

Standby Mode

If a logic-high level is applied to RS, the MAX3058
enters a low-current standby mode. In this mode, the
transmitter is switched off and the receiver is switched
to a low-current/low-speed state. If dominant bits are
detected, RXD switches to low level. The microcon­troller should react to this condition by switching the
transceiver back to normal operation.

When the MAX3058 enters standby mode, RXD goes
high for 4µs (max) regardless of the BUS state.
However, after 4µs, RXD goes low only when the BUS is
dominant; otherwise, RXD remains high (when the BUS
is recessive). For proper measurement of standby to
receiver active time (t

SBRXDL

), the BUS should be in a

dominant state (see Figure 2).

Shutdown Mode

Drive SHDN high to enter shutdown mode on the
MAX3058. Connect SHDN to ground or leave it floating
for normal operation. On the MAX3059, drive RS high to
enter shutdown.

TERM

Drive TERM high (to VCC) or leave it floating to termi­nate the MAX3059 with 120Ω resistor connected across
the CANH and CANL. Connect TERM to ground to dis­connect this resistor.

Thermal Shutdown

If the junction temperature exceeds +160°C, the device
is switched off. The hysteresis is approximately 25°C,
disabling thermal shutdown once the temperature
drops to +135°C. In thermal shutdown, CANH and CANL
go recessive and all IC functions are disabled.

5V, 1Mbps, Low Supply Current
CAN Transceivers

10 ______________________________________________________________________________________

Table 3. Mode Selection Truth Table

CONDITION FORCED AT PIN RS MODE RESULTING CURRENT AT RS (µA)

VRS < 0.3 x V

0.4 x VCC <VRS < 0.6 x V

VRS > 0.75 x V

VRS > 0.75 x V

CC

CC

CC

CC

High speed |IRS| < 500

Slope control 10µA < |IRS| < 200

Standby (MAX3058) |IRS| < 10

Shutdown (MAX3059) |IRS| < 10

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 multidrop CAN applications, it is important to main­tain a direct point-to-point wiring scheme. A single pair
of wires should connect each element of the CAN bus,
and the two ends of the bus should be terminated with
120Ω resistors. A star configuration should never
be used.

Any deviation from the point-to-point wiring scheme
creates a stub. The high-speed edge of the CAN data
on a stub can create reflections back down the bus.
These reflections can cause data errors by eroding the
noise margin of the system.

Although stubs are unavoidable in a multidrop system,
care should be taken to keep these stubs as small as
possible, especially in high-speed mode. In slope-con­trol mode, the requirements are not as rigorous, but
stub length should still be minimized.

Power Supply and Bypassing

The MAX3058/MAX3059 require no special layout con­siderations beyond common practices. Bypass VCCto
GND with a 0.1µF ceramic capacitor mounted close to
the IC with short lead lengths and wide trace widths.

Chip Information

TRANSISTOR COUNT: 1024

PROCESS: BiCMOS

MAX3058/MAX3059

5V, 1Mbps, Low Supply Current

CAN Transceivers

______________________________________________________________________________________ 11

Typical Operating Circuit

V

CC

0.1µF

120Ω

V

CAN

CONTROLLER

TX0

RX0

GND

25kΩ–200kΩ

CC

MAX3058

TXD

RXD

RS

CANH

CANL

SHDN

GND

120Ω

MAX3058/MAX3059

5V, 1Mbps, 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

© 2003 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

N MS012

16

AC

SOICN .EPS

SIDE VIEW

PROPRIETARY INFORMATION

TITLE:

PACKAGE OUTLINE, .150" SOIC

REV.DOCUMENT CONTROL NO.APPROVAL

21-0041

1

B

1