MAXIM MAX3053 User Manual
MAX3053
±80V Fault-Protected, 2Mbps,
Low Supply Current CAN Transceiver
________________________________________________________________ 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.
General Description
The MAX3053 interfaces between the control area network (CAN) protocol controller and the physical wires of
the bus lines in a CAN. It is primarily intended for industrial systems requiring data rates up to 2Mbps and features ±80V fault protection against shorts to
high-voltage power buses. The device provides differential transmit capability to the bus and differential
receive capability to the CAN controller.
The MAX3053 has three different modes of operation:
high-speed, slope control, and shutdown. High-speed
mode allows data rates up to 2Mbps. In slope control
mode, data rates are between 40kbps and 500kbps so
the effects of EMI are reduced and unshielded twisted
or parallel cable may be used. In shutdown mode, the
transmitter is switched off, and the receiver is switched
to a low-current mode.
An autoshutdown function puts the device in 15µA shutdown mode when the bus or CAN controller is inactive
for 47ms or greater.
The MAX3053 is available in an 8-pin SO package and
is specified for -40°C to +125°C operation.
Applications
Industrial Control and Networks
Printers
Automotive Systems
HVAC Controls
Telecom 72V Systems
Features
♦ ±80V Fault Protection
♦ Three Operating Modes
High-Speed Operation up to 2Mbps
Slope Control Mode to Reduce EMI
(40kbps to 500kbps)
♦ 15µA Low-Current Shutdown Mode
♦ Autoshutdown when Device Is Inactive
♦ Automatic Wakeup from Shutdown
♦ Thermal Shutdown
♦ Current Limiting
♦ Fully Compatible with the ISO 11898 Standard
Ordering Information
TXD
RXD
RS
25kΩ TO 180kΩ
V
CC
CANL
GND
CANH
120Ω
100nF
MAX3053
SHDN
GND
TXD
100nF
CAN
CONTROLLER
V
CC
120Ω
RXD
Typical Operating Circuit
19-2425; Rev 0; 4/02
Pin Configuration appears at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX3053ESA -40°C to +85°C 8 SO
MAX3053ASA -40°C to +125°C 8 SO
MAX3053
±80V Fault-Protected, 2Mbps,
Low Supply Current CAN Transceiver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC= +5V ±10%, RL= 60Ω, RS = GND, TA= T
MIN
to T
MAX
, unless otherwise noted. 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.
V
CC
to GND
............................................................ -0.3V to +6V
TXD, RS, RXD, SHDN to GND ....................-0.3V to (VCC+ 0.3V)
RXD Shorted to GND................................................. Continuous
CANH, CANL to GND...........................-80V to +80V Continuous
Continuous Power Dissipation
8-Pin SO (derate 5.9mW/°C above +70°C) .................470mW
Operating Temperature Ranges
MAX3053ASA ...............................................-40°C to +125°C
MAX3053ESA .................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Supply Current I
Shutdown Supply Current I
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
CANH, CANL TRANSMITTER
Recessive Bus Voltage
Off-State Output Leakage I
CANH Output Voltage V
CANL Output Voltage V
Differential Output
(V
CANH
CANH Short-Circuit Current I
CANL Short-Circuit Current I
ESD CANH, CANL (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Dominant (Note 1) 56 72
S
Dominant (no load) 6
Recessive (Note 1) 3.6 5.5
Recessive (no load) 5.5
SHDN = GND 15 30 µA
2.0 V
0.4 V
V
TXD
= V
CC
1µA
20 kΩ
V
= VCC, no load 2 3 V
TXD
-2V < V
SHDN = GND, V
-80V < V
SHDN = GND, V
V
TXD
V
TXD
V
TXD
,
V
TXD
V
TXD
V
CANH
V
CANL
, V
CANH
CANH
= 0 3.0 V
CANL
, V
TXD
CANL
TXD
< +7V,
= V
< +80V,
= V
CC
CC
-2 +1
-4 +4
CC
= 0 0 2.0 V
= 0 1.5 5
= 0, RL = 45Ω 1.5
= VCC; no load -500 +50 mV
= -5V -200 mA
= 18V 200 mA
- V
CANL
QSHDN
IH
IL
IH
INTXD
V
CANH,
V
CANL
LO
CANH
CANL
∆V
CANH
)
V
CANL
SC
SC
Human Body Model ± 2
IEC1000-4-2 Air-Gap Discharge ± 3
IEC1000-4-2 Contact Discharge ± 2.5
mA
mA
V
V
kV
MAX3053
±80V Fault-Protected, 2Mbps,
Low Supply Current CAN Transceiver
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC= +5V ±10%, RL= 60Ω, RS = GND, TA= T
MIN
to T
MAX
, unless otherwise noted. 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 Wakeup Voltage
Threshold
RXD High-Level Output Voltage V
RXD Low-Level Output Voltage V
CANH and CANL Input
Resistance
Differential Input Resistance R
SLOPE CONTROL
Input Voltage for High Speed V
Slope Control Mode Voltage V
Slope Control Mode Current I
High-Speed Mode Current I
AUTOSHUTDOWN
SHDN Input Voltage High 2V
SHDN Input Voltage Low 0.5 V
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
DIFF
SLP
SLOPE
SLOPE
HS
I
, V
CANH
-7V < V
-7V < V
SHDN = GND, V
I = -100µA
I = 10mA 0.8
I = 5mA 0.4
RRS = 24kΩ to 180kΩ
RRS = 24kΩ to 180kΩ, VCC = +5.0V -10 -200 µA
V
= 0 -500 µA
RS
CANH
CANH
, V
, V
< +12V -1.0 +0.5 V
CANL
< +12V 0.9 3.3 V
CANL
= V
TXD
CC
< +7V, unless otherwise specified)
CANL
150 mV
69V
0.8 x
V
CC
525kΩ
10 100 kΩ
0.4 x
V
CC
0.3 x
V
CC
0.6 x
V
CC
V
V
V
V
MAX3053
±80V Fault-Protected, 2Mbps,
Low Supply Current CAN Transceiver
4 _______________________________________________________________________________________
TIMING CHARACTERISTICS
(VCC= +5V ±10%, RL= 60Ω, CL= 100pF, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at VCC= +5V and
T
A
= +25°C.) (Figures 1, 2, and 3)
Note 1: As defined by ISOSHDN, bus value is one of two complementary logical values: dominant or recessive. The dominant value
represents 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 MAX3053 values, see the truth table in the Transmitter and
Receiver sections.
Note 2: The ESD structures do not short out CANH and CANL under an ESD event while -7V < CANH, CANL < +12V.
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
Time to Wakeup: CANH > 9V t
Time to Sleep Mode when Bus Is
Recessive
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BIT
ONTXD
OFFTXD
ONRXD
OFFRXD
WAKE
t
SHDN
V
= 0 (2Mbps) 0.5
RS
RRS = 24kΩ (500kbps) 2
RRS = 100kΩ (125kbps) 8
RRS = 180kΩ (62.5kbps) 25
V
= 0 40 ns
RS
V
= 0 75 ns
RS
V
= 0 (2Mbps) 120 ns
RS
RRS = 24kΩ (500kbps) 0.4
RRS = 100kΩ (125kbps) 1.6
RRS = 180kΩ (62.5kbps) 5.0
V
= 0 (2Mbps) 130 ns
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
= 180kΩ (62.5kbps) 1.6
RS
SHDN = GND, V
C
SHDN
= V
TXD
CC
= 100nF 10 47 ms
µs
µs
µs
V/µs
10 µs
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