General Description
The MAX13050/MAX13052/MAX13053/MAX13054 are
pin-for-pin compatible, industry-standard, high-speed,
control area network (CAN) transceivers with extended
±80V fault protection. These products are ideal automo-
tive and industrial network applications where overvoltage
protection is required. These CAN transceivers provide a
link between the CAN protocol controller and the physical
wires of the bus lines in a CAN. These devices can be
used for +12V/+42V battery, automotive, and DeviceNet®
applications, requiring data rates up to 1Mbps.
The CAN transceivers have an input common-mode
range greater than ±12V, exceeding the ISO11898
specification of -2V to +7V, and feature ±8kV ESD pro-
tection, making these devices ideal for harsh automo-
tive and industrial environments.
The CAN transceivers provide a dominant timeout func-
tion that prevents erroneous CAN controllers from clamp-
ing the bus to a dominant level if the TXD input is held low
for greater than 1ms. The MAX13050/MAX13052 provide
a SPLIT pin used to stabilize the recessive common-
mode voltage. The MAX13052 also has a slope-control
mode that can be used to program the slew rate of the
transmitter for data rates of up to 500kbps. The
MAX13053 features a silent mode that disables the trans-
mitter. The MAX13053 also has a reference output that
can be used to bias the input of older CAN controllers
that have a differential comparator. The MAX13054 has a
separate dedicated logic input, VCC2, allowing interfacing
with a +3.3V microcontroller.
The MAX13050/MAX13052/MAX13053/MAX13054 are
available in an 8-pin SO package and are specified to
operate in the -40°C to +85°C and the -40°C to +125°C
temperature ranges.
Features
♦Fully Compatible with the ISO11898 Standard
♦±8kV ESD IEC 61000-4-2 Contact Discharge per
IBEE Test Facility
♦±80V Fault Protection
♦+3.3V Logic Compatible (MAX13054)
♦High-Speed Operation of Up to 1Mbps
♦Slope-Control Mode (MAX13052)
♦Greater than ±12V Common-Mode Range
♦Low-Current Standby Mode
♦Silent Mode (MAX13053)
♦Thermal Shutdown
♦Short-Circuit Protection
♦Transmit (TXD) Data Dominant Timeout
♦Current Limiting
♦SPLIT Pin (MAX13050/MAX13052)
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3598; Rev 0; 2/05
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 PIN-PACKAGE
MAX13050ESA -40°C to +85°C 8 SO
MAX13050ASA/AUT* -40°C to +125°C 8 SO
MAX13052ESA -40°C to +85°C 8 SO
MAX13052ASA/AUT* -40°C to +125°C 8 SO
MAX13053ESA -40°C to +85°C 8 SO
MAX13053ASA/AUT* -40°C to +125°C 8 SO
MAX13054ESA -40°C to +85°C 8 SO
MAX13054ASA/AUT* -40°C to +125°C 8 SO
Selector Guide
PART SPLIT SLOPE
CONTROL
STANDBY
MODE
SILENT
MODE
3.3V
SUPPLY REF PIN-FOR-PIN
REPLACEMENT
MAX13050 Yes — Yes — — — TJA1040
MAX13052 Yes Yes Yes — — — PCA82C250/5-1
MAX13053 — — — Yes — Yes TJA1050,
AMIS-30660
MAX13054 — — Yes Yes — TLE6250v33,
CF163
Pin Configurations, Functional Diagrams, and Typical
Operating Circuits appear at end of data sheet.
+12V and +42V
Automotive
DeviceNet Nodes
Medium- and Heavy-Duty
Truck Systems
Industrial
Applications *AUT denotes introduction to AECQ100 specifications.
DeviceNet is a registered trademark of the Open DeviceNet
Vendor Association.
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
VCC, VCC2 ...............................................................-0.3V to +6V
RS ...............................................................-0.3V to (VCC + 0.3V)
TXD, STBY, S, REF, RXD .........................................-0.3V to +6V
CANH, CANL, SPLIT ..........................................................± 80V
Continuous Power Dissipation (TA= +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 +150°C
Lead Temperature (soldering, 10s) ................................+300°C
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V ±5%, VCC2 = +3V to +3.6V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V,
RL= 60Ω, and TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Dominant, RL = 60Ω72
MAX13050/MAX13052/
MAX13053 12.5
VCC Supply Current ICC Recessive
MAX13054 10
mA
VCC2 Supply Current ICC2 MAX13054, TXD = VCC2 or floating 15 µA
MAX13052 25
Standby Current ISTANDBY MAX13050/MAX13054 11 µA
Silent Mode ISILENT MAX13053 12.5 mA
Thermal-Shutdown Threshold TSH +165 °C
Thermal-Shutdown Hysteresis 13 °C
INPUT LEVELS (TXD, STBY, S)
2
High-Level Input Voltage VIH TXD, STBY (MAX13054) 0.7 x
VCC2
V
0.8
Low-Level Input Voltage VIL TXD, STBY (MAX13054) 0.3 x
VCC2
V
VTXD = VCC, VTXD = VCC2 (MAX13054) -5 +5
High-Level Input Current IIH VSTBY = VCC, VS = VCC (MAX13053) -5 +5 µA
VTXD = GND -300 -100
Low-Level Input Current IIL VSTBY = GND, VS = GND (MAX13053) -10 -1 µA
Input Capacitance CIN 10 pF
CANH, CANL TRANSMITTER
Normal mode, VTXD = VCC, no load 2 3 V
Recessive Bus Voltage VCANH,
VCANL Standby mode, no load -100 +100 mV
VCANH, VCANL = ±76V ±3
Recessive Output Current ICANH,
ICANL -32V ≤ VCANH, VCANL ≤ +32V -2.5 +2.5 mA
CANH Output Voltage VCANH VTXD = 0, dominant 3.0 4.25 V
CANL Output Voltage VCANL VTXD = 0, dominant 0.50 1.75 V
Matching Between CANH and
CANL Output Voltage ∆DOM VTXD = 0, dominant, TA = +25°C,
(VCANH + VCANL) - VCC -100 +150 mV
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±5%, VCC2 = +3V to +3.6V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V,
RL= 60Ω, and TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Dominant, VTXD = 0, 45Ω ≤ RL ≤ 60Ω1.5 3.0 V
Differential Output
(VCANH - VCANL)VDIFF Recessive, VTXD = VCC, no load -50 +50 mV
CANH Short-Circuit Current ICANHSC VCANH = 0, VTXD = 0 -100 -70 -45 mA
VCANL = 5V, VTXD = 0 406090
VCANL = 40V, VTXD = 0 (Note 2) 40 60 90CANL Short-Circuit Current ICANLSC
VCANL = 76V, VTXD = 0 63
mA
RXD OUTPUT LEVELS
I = -100µA 0.8 x
VCC VCC
RXD High-Output-Voltage Level VOH
I = -100µA (MAX13054) 0.8 x
VCC2VCC2
V
RXD Low-Output-Voltage Level VOL I = 5mA 0.4 V
COMMON-MODE STABILIZATION (SPLIT) and REF
Output Voltage VSPLIT Normal mode,
-500µA ≤ ISPLIT ≤ 500µA
0.3 x
VCC
0.7 x
VCC V
Standby mode, -40V ≤ VSPLIT ≤ +40V 20
Leakage Current ILEAK Standby mode, -76V ≤ VSPLIT ≤ +76V 50 µA
REF Output Voltage VREF -50µA ≤ IREF ≤ +50µA (MAX13053) 0.45 x
VCC
0.55 x
VCC V
DC BUS RECEIVER (VTXD = VCC, CANH and CANL externally driven)
-12V ≤ VCM ≤ +12V 0.5 0.7 0.9
Differential Input Voltage VDIFF MAX13050/MAX13052/MAX13054
-12V ≤ VCM ≤ +12V (standby mode) 0.50 1.15 V
Differential Input Hysteresis V
D IF F
(
H Y S T
)
Normal mode, -12V ≤ VCM ≤ +12V 70 mV
Common-Mode Input Resistance RICM Normal or standby mode,
VCANH = VCANL = ±12V 15 35 kΩ
Matching Between CANH and
CANL Common-Mode Input
Resistance
RIC_MATCH VCANH = VCANL -3 +3 %
Differential Input Resistance RDIFF Normal or standby mode,
VCANH - VCANL = 1V 25 75 kΩ
Common-Mode Input
Capacitance CIM VTXD = VCC 20 pF
Differential Input Capacitance VTXD = VCC 10 pF
Input Leakage Current ILI VCC = 0, VCANH = VCANL = 5V -5 +5 µA
SLOPE CONTROL RS ( MAX13052)
Input Voltage for High Speed VIL_RS 0.3 x
VCC V
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
4 _______________________________________________________________________________________
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±5%, VCC2 = +3V to +3.6V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V,
RL= 60Ω, and TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage for Standby VIH_RS 0.75 x
VCC V
Slope-Control Mode Voltage VSLOPE -200µA < IRS < 10µA 0.4 x
VCC
0.6 x
VCC V
High-Speed Mode Current IIL_RS VRS = 0 -500 µA
ESD Protection IEC 61000-4-2 Contact Discharge Method
per IBEE test facility (Note 3) ±8 kV
TIMING CHARACTERISTICS
(VCC = +5V ±5%, VCC2 = +3V to +3.6V, RL= 60Ω, CL= 100pF, TA= TMIN to TMAX, unless otherwise noted. Typical values are at
VCC = +5V, VCC2 = +3.3V, and TA= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Delay TXD to Bus Active tONTXD Figure 1 (Note 4) 66 110 ns
MAX13050/MAX13052/
MAX13053 61 95
Delay TXD to Bus Inactive tOFFTXD Figure 1
(Note 4)
MAX13054 70 110
ns
Delay Bus to Receiver Active tONRXD Figure 1 (Note 4) 54 115 ns
Delay Bus to Receiver Inactive tOFFRXD Figure 1 (Note 4) 46 160 ns
Delay TXD to RXD Active
(Dominant Loop Delay) tONLOOP Figure 1 (Note 4) 121 255 ns
Delay TXD to RXD Inactive
(Recessive Loop Delay) TOFFLOOP Figure 4 (Note 4) 108 255 ns
RRS = 24kΩ
(500kbps) 280 450 ns
RRS = 100kΩ
(125kbps) 0.82 1.6
Delay TXD to RXD Active
(Dominant Loop Delay) Slew-Rate
Controlled
tONLOOP-S MAX13052
RRS = 180kΩ
(62.5kbps) 1.37 5
µs
RRS = 24kΩ
(500kbps) 386 600 ns
RRS = 100kΩ
(125kbps) 0.74 1.6
Delay TXD to RXD Inactive (Loop
Delay) Slew-Rate Controlled tOFFLOOP-S MAX13052
RRS = 180kΩ
(62.5kbps) 0.97 5
µs
RRS = 24kΩ
(500kbps) 10
RRS = 100kΩ
(125kbps) 2.7
Differential Output Slew Rate |SR| MAX13052
RRS = 180kΩ
(62.5kbps) 1.6
V/µs
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
_______________________________________________________________________________________ 5
TIMING CHARACTERISTICS (continued)
(VCC = +5V ±5%, VCC2 = +3V to +3.6V, RL= 60Ω, CL= 100pF, TA= TMIN to TMAX, unless otherwise noted. Typical values are at
VCC = +5V, VCC2 = +3.3V, and TA= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Dominant Time for Wake-Up with
Bus tWAKE Standby mode, VDIFF = +3V, Figure 2 0.75 1.5 3.00 µs
Delay STBY to Normal Mode
(DOMINANT)
tSTBY-
NORM
TXD = 0 (MAX13050, MAX13054)
FROM STBY falling to CANH - CANL = 0.9V 510µs
TXD Dominant Timeout tDOM VTXD = 0 0.3 0.6 1.0 ms
Note 1: All currents into the device are positive, all currents out of the device are negative. All voltages are referenced to the device
ground, unless otherwise noted.
Note 2: Guaranteed by design, not production tested.
Note 3: MAX13050 tested by IBEE test facility. Please contact factory for report. MAX13052/MAX13053/MAX13054 are pending ESD
evaluation.
Note 4: For the MAX13052, VRS = 0.
0.9V
0.3 x VCC OR 0.3 x VCC2
0.7 x VCC OR 0.7 x VCC2
0.5V
tONTXD
tONRXD
tONLOOP
tOFFTXD
tOFFRXD
tOFFLOOP
RECESSIVE
DOMINANT
TXD
VDIFF
RXD
Timing Diagrams
Figure 1. Timing Diagram
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
6 _______________________________________________________________________________________
tWAKE
0.9V
VDIFF
RXD
STANDBY MODE
DOMINANT
Timing Diagrams
Typical Operating Characteristics
(VCC = +5V, RL= 60Ω, CL= 100pF, VCC2 = +3.3V, and TA = +25°C, unless otherwise noted.)
SLEW RATE
vs. RRS AT 100kbps
MAX13050 toc01
RRS (kΩ)
SLEW RATE (V/µs)
18016014012010080604020
5
10
15
20
25
30
0
0 200
RECESSIVE
DOMINANT
MAX13052
SUPPLY CURRENT
vs. DATA RATE
MAX13050 toc02
DATA RATE (kbps)
SUPPLY CURRENT (mA)
900800700600500400300200100
20
25
30
35
40
15
0 1000
TA = +25°CTA = -40°C
TA = +125°C
STANDBY SUPPLY CURRENT
vs. TEMPERATURE (RS = VCC)
MAX13050 toc03
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT (µA)
1007525 500-25
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
10.0
-50 125
MAX13052
Figure 2. Timing Diagram for Standby and Wake-Up Signal
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
_______________________________________________________________________________________ 7
STANDBY SUPPLY CURRENT
vs. TEMPERATURE (STBY = VCC)
MAX13050 toc04
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT (µA)
10075-25 0 25 50
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
4.0
-50 125
MAX13050
MAX13054
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE
MAX13050 toc04
TEMPERATURE (°C)
RECEIVER PROPAGATION DELAY (ns)
1007525 500-25
10
20
30
40
50
60
70
80
90
100
0
-50 125
RECESSIVE
DATA RATE = 100kbps
DOMINANT
0
60
40
20
100
80
180
160
140
120
200
-50 -25 0 25 50 75 100 125
DRIVER PROPAGATION DELAY
vs. TEMPERATURE
MAX13050 toc06
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (ns)
DOMINANT
RECESSIVE
2.40
2.44
2.42
2.48
2.46
2.52
2.50
2.54
2.58
2.56
2.60
010152052530354540 50
REF VOLTAGE vs. REG OUTPUT CURRENT
MAX13050 toc07
REG OUTPUT CURRENT (µA)
REF VOLTAGE (V)
TA = -40°C
TA = +125°CTA = +25°C
SPLIT LEAKAGE CURRENT vs. TEMPERATURE
MAX13050 toc08
TEMPERATURE (°C)
LEAKAGE CURRENT (µA)
1007550250-25
0.001
0.01
0.1
1
10
0.0001
-50 125
RECEIVER OUTPUT LOW
vs. OUTPUT CURRENT
MAX13050 toc09
OUTPUT CURRENT (mA)
VOLTAGE RXD (V)
2015105
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
0
TA = -40°C
TA = +125°C
TA = +25°C
MAX13050/MAX13052/MAX13053
0
100
50
200
150
250
300
0 200 300100 400 500 600
RECEIVER OUTPUT HIGH
vs. OUTPUT CURRENT
MAX13050 toc10
OUTPUT CURRENT (µA)
RECEIVER OUTPUT HIGH (VCC2 - RXD) (mV)
TA = -40°C
TA = +125°C
TA = +25°C
MAX13054
RECEIVER OUTPUT HIGH
vs. OUTPUT CURRENT
MAX13050 toc11
OUTPUT CURRENT (mA)
RECEIVER OUTPUT HIGH (VCC - RXD) (V)
764 52 31
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
08
TA = -40°C
TA = +125°C
TA = +25°C
MAX13050/MAX13052/MAX13053
0
100.0
50.0
200.0
150.0
250.0
300.0
021345
RECEIVER OUTPUT LOW
vs. OUTPUT CURRENT
MAX13050 toc12
OUTPUT CURRENT (mA)
VOLTAGE RXD (mV)
MAX13054
VCC2 = +3.3V
TA = -40°C
TA = +125°C
TA = +25°C
Typical Operating Characteristics
(VCC = +5V, RL= 60Ω, CL= 100pF, VCC2 = +3.3V, and TA = +25°C, unless otherwise noted.)
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
8 _______________________________________________________________________________________
DIFFERENTIAL VOLTAGE
vs. DIFFERENTIAL LOAD
MAX13050 toc13
DIFFERENTIAL LOAD RL (Ω)
DIFFERENTIAL VOLTAGE (V)
26022018014010060
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
20 300
TA = +125°C
TA = -40°C
TA = +25°C
RECEIVER PROPAGATION DELAY
MAX13051 toc14
200ns
VDIFF
(1V/div)
RXD
(2V/div)
200ns/div
MAX13054 WAVEFORM
VDIFF
2V/div
TXD
2V/div
RXD
2V/div
MAX13050 toc15
DRIVER PROPAGATION DELAY,
(RRS = 24kΩ, 75kΩ AND 100kΩ)
MAX13051 toc16
1.00µs
TXD
(5V/div)
VDIFF
(2V/div)
RRS = 24kΩ
VDIFF
(2V/div)
RRS = 75kΩ
VDIFF
(2V/div)
RRS = 100kΩ
MAX13052
DRIVER PROPAGATION DELAY
MAX13051 toc17
200ns/div
TXD
(2V/div)
VDIFF
(1V/div)
LOOPBACK PROPAGATION DELAY
vs. RRS
MAX13051 toc18
RRS (kΩ)
LOOPBACK PROPAGATION DELAY (µs)
18016014012010080604020
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
0 200
RECESSIVE
DOMINANT
MAX13052
Typical Operating Characteristics (continued)
(VCC = +5V, RL= 60Ω, CL= 100pF, VCC2 = +3.3V, and TA = +25°C, unless otherwise noted.)
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
_______________________________________________________________________________________ 9
Detailed Description
The MAX13050/MAX13052/MAX13053/MAX13054
±80V fault-protected CAN transceivers are ideal for
automotive and industrial network applications where
overvoltage protection is required. These devices pro-
vide a link between the CAN protocol controller and the
physical wires of the bus lines in a control area network
(CAN). These devices can be used for +12V and +42V
battery automotive and DeviceNet applications, requir-
ing data rates up to 1Mbps.
The MAX13050/MAX13052/MAX13053/MAX13054
dominant timeout prevents the bus from being blocked
by a hungup microcontroller. If the TXD input is held
low for greater than 1ms, the transmitter becomes dis-
abled, driving the bus line to a recessive state. The
MAX13054 +3.3V logic input allows the device to com-
municate with +3.3V logic, while operating from a +5V
supply. The MAX13050 and MAX13052 provide a split
DC-stabilized voltage. The MAX13053 has a reference
output that can be used to bias the input of a CAN con-
troller’s differential comparator.
All devices can operate up to 1Mbps (high-speed
mode). The MAX13052 slope-control feature allows the
user to program the slew rate of the transmitter for data
Pin Description
PIN
MAX13050
MAX13052
MAX13053
MAX13054
NAME FUNCTION
1 1 1 1 TXD Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller
with a 25kΩ pullup to VCC. For the MAX13054, TXD is pulled to VCC2.
2 2 2 2 GND Ground
33 3 3 V
CC Supply Voltage. Bypass VCC to GND with a 0.1µF capacitor.
4 4 4 4 RXD
Receive Data Output. RXD is a CMOS/TTL-compatible output from the physical
bus lines CANH and CANL. For the MAX13054, RXD output voltage is referenced
to the VCC2 supply voltage.
5 5 — — SPLIT Common-Mode Stabilization Output. Output equaled to 0.5 x VCC. SPLIT goes
high impedance in standby mode .
6 6 6 6 CANL CAN Bus-Line Low
7 7 7 7 CANH CAN Bus-Line High
8 — — 8 STBY Standby Input. Drive STBY low for high-speed operation. Drive STBY high to
place the device in low-current standby mode.
—8 —— RS
Mode-Select Input. Drive RS low or connect to GND for high-speed operation.
Connect a resistor between RS and GND to control output slope. Drive RS high to
put into standby mode.
— — 5 — REF Reference Output Voltage. Always on reference output voltage, set to 0.5 x VCC.
—— 8 — S Silent-Mode Input. Drive S low to enable TXD and to operate in high-speed
mode. Drive S high to disable the transmitter.
—— — 5 V
CC2
Logic-Supply Input. VCC2 is the logic supply voltage for the input/output between
the CAN transceiver and microprocessor. VCC2 allows fully compatible +3.3V
logic on all digital lines. Bypass to GND with a 0.1µF capacitor. Connect VCC2 to
VCC for 5V logic compatibility.
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
10 ______________________________________________________________________________________
rates of up to 500kbps. This reduces the effects of EMI,
thus allowing the use of unshielded-twisted or parallel
cable. The MAX13050/MAX13052 and MAX13054 stand-
by mode shuts off the transmitter and switches the
receiver to a low-current/low-speed state.
The MAX13050/MAX13052/MAX13053/MAX13054 input
common-mode range is greater than ±12V, exceeding
the ISO11898 specification of -2V to +7V, and feature
±8kV Contact Discharge protection, making these
devices ideal for harsh automotive and industrial envi-
ronments.
±80V Fault Protected
The MAX13050/MAX13052/MAX13053/MAX13054 fea-
ture ±80V fault protection. This extended voltage range
of CANH, CANL, and SPLIT allows use in high-voltage
systems and communication with high-voltage buses.
Operating Modes
High-Speed Mode
The MAX13050/MAX13052/MAX13053/MAX13054 can
achieve transmission rates of up to 1Mbps when oper-
ating in high-speed mode. Drive STBY low to operate
the MAX13050 and MAX13054 in high-speed opera-
tion. Connect RS to ground to operate the MAX13052 in
high-speed mode.
Slope-Control Mode (MAX13052)
Connect a resistor from RS to ground to select slope-
control mode (Table 1). In slope-control mode, CANH
and CANL slew rates are controlled by the resistor
(16kΩ≤RRS ≤200kΩ) connected between RS and
GND. Controlling the rise and fall slopes reduces high-
frequency EMI and allows the use of an unshielded-
twisted pair or a parallel pair of wires as bus lines. The
slew rate can be approximated using the formula below:
where, SR is the desired slew rate and RRS is in kΩ.
Standby Mode (MAX13050/MAX13052/MAX13054)
In standby mode (RS or STBY = high), the transmitter is
switched off and the receiver is switched to a low-cur-
rent/low-speed state. The supply current is reduced
during standby mode. The bus line is monitored by a
low-differential comparator to detect and recognize a
wake-up event on the bus line. Once the comparator
detects a dominant bus level greater than tWAKE, RXD
pulls low.
Drive STBY high for standby mode operation for the
MAX13050 and MAX13054. Apply a logic-high to RS to
enter a low-current standby mode for the MAX13052.
Silent Mode S (MAX13053)
Drive S high to place the MAX13053 in silent mode.
When operating in silent mode, the transmitter is dis-
abled regardless of the voltage level at TXD. RXD how-
ever, still monitors activity on the bus line.
Common-Mode Stabilization (SPLIT)
SPLIT provides a DC common-mode stabilization volt-
age of 0.5 x VCC when operating in normal mode.
SPLIT stabilizes the recessive voltage to 0.5 x VCC for
conditions when the recessive bus voltage is lowered,
caused by an unsupplied transceiver in the network
with a significant leakage current from the bus lines to
ground. Use SPLIT to stabilize the recessive common-
mode voltage by connecting SPLIT to the center tap of
the split termination, see the Typical Operating Circuit.
In standby mode or when VCC = 0, SPLIT becomes
high impedance.
Reference Output (MAX13053)
MAX13053 has a reference voltage output (REF) set to
0.5 x VCC. REF can be utilized to bias the input of a
CAN controller’s differential comparator, and to provide
power to external circuitry.
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 trans-
mitter and receiver is given in Table 2.
TXD Dominant Timeout
The CAN transceivers provide a transmitter dominant
timeout function that prevents erroneous CAN controllers
from clamping the bus to a dominant level by a continu-
ous low TXD signal. When the TXD remains low for the
1ms maximum timeout period, the transmitter becomes
disabled, thus driving the bus line to a recessive state
SR V s RRS
(/ )µ=
250
CONDITION FORCED
AT RS MODE RESULTING
CURRENT AT RS
VRS or ≤ 0.3 x VCC High-Speed |IRS| ≤ 500µA
0.4 x VCC ≤ VRS ≤ 0.6
x VCC Slope Control 10µA ≤ |IRS| ≤ 200µA
VRS ≥ 0.75 x VCC Standby |IRS| ≤ 10µA
Table 1. Mode Selection Truth Table
MAX13052
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
______________________________________________________________________________________ 11
(Figure 3). The transmitter becomes enabled upon
detecting a rising edge at TXD.
Receiver
The receiver reads differential inputs from the bus lines
(CANH, CANL) and transfers this data as a single-
ended output (RXD) to the CAN controller. It consists of
a comparator that senses the difference VDIFF =
(CANH - CANL) with respect to an internal threshold of
0.7V. If this difference is positive (i.e., VDIFF > 0.7), a
logic-low is present at RXD. If negative (i.e., VDIFF <
0.7V), a logic-high is present.
The CANH and CANL common-mode range is greater
than ±12V. RXD is logic-high when CANH and CANL
are shorted or terminated and undriven.
+3.3V Logic Compatibility (MAX13054)
A separate input, VCC2, allows the MAX13054 to com-
municate with +3.3V logic systems while operating from
a +5V supply. This provides a reduced input voltage
threshold to the TXD and STBY inputs, and provides a
logic-high output at RXD compatible with the microcon-
troller’s system voltage. The logic compatibility elimi-
nates longer propagation delay due to level shifting.
Connect VCC2 to VCC to operate the MAX13054 with
+5V logic systems.
Driver Output Protection
The current-limiting feature protects the transmitter out-
put stage against a short circuit to a positive and nega-
tive battery voltage. Although the power dissipation
increases during this fault condition, current-limit pro-
tection prevents destruction of the transmitter output
stage. Upon removal of a short, the CAN transceiver
resumes normal operation.
Thermal Shutdown
If the junction temperature exceeds +165°C, the driver
is switched off. The hysteresis is approximately 13°C,
TXD RS CANH CANL BUS STATE RXD
Low VRS ≤ 0.75 x VCC High Low Dominant Low
High or Float VRS ≤ 0.75 x VCC VCC / 2 VCC / 2 Recessive High
XV
RS ≥ 0.75 x VCC RICM to GND RICM to GND Recessive High
TXD RS CANH CANL BUS STATE RXD
Low VS < 0.8V High Low Dominant Low
High or Float VS < 0.8V VCC / 2 VCC / 2 Recessive High
XV
S > 2V VCC / 2 VCC / 2 Recessive High
Table 2. Transmitter and Receiver Truth Table (MAX13052)
TXD STBY CANH CANL BUS STATE RXD
Low VSTBY ≤ 0.8V
*VSTBY ≤ 0.3 x VCC2High Low Dominant Low
High or Float VSTBY ≤ 0.8V
*VSTBY ≤ 0.3 x VCC2VCC / 2 VCC / 2 Recessive High
XVSTBY ≥ 2V
*VSTBY ≥ 0.7 x VCC2RICM to GND RICM to GND Recessive High
Table 3. Transmitter and Receiver Truth Table
(MAX13053)
(MAX13050/MAX13054)
TRANSMITTER
DISABLED
TRANSMITTER
ENABLED
tDOM
TXD
VCANH - VCANL
Figure 3. Transmitter Dominant Timeout Timing Diagram
*For the MAX13054
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
12 ______________________________________________________________________________________
disabling thermal shutdown once the temperature
drops below +152°C. In thermal shutdown, CANH and
CANL go recessive. After a thermal-shutdown event,
the IC resumes normal operation when the junction
temperature drops below the thermal-shutdown hys-
teresis, and upon the CAN transceiver detecting a ris-
ing edge at TXD.
Applications Information
Reduced EMI and Reflections
In slope-control mode, the MAX13052’s CANH and CANL
outputs are slew-rate limited, minimizing EMI and reduc-
ing reflections caused by improperly terminated cables.
In multidrop CAN applications, it is important to main-
tain 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
120Ωresistors, see Figure 4. 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-con-
trol mode, the requirements are not as rigorous, but
stub length should still be minimized.
Layout Consideration
CANH and CANL are differential signals and steps
should be taken to insure equivalent parasitic capaci-
MAX13052
RXD
RL = 120Ω
RL = 60Ω
TRANSCEIVER 2
TRANSCEIVER 1
TRANSCEIVER 3
CANH
CANL
TXD
TWISTED PAIR
RL = 60Ω
SPLIT
STUB LENGTH
KEEP AS SHORT
AS POSSIBLE
Figure 4. Multiple Receivers Connected to CAN Bus
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC
50MΩ to 100MΩ
RD
330kΩ
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 5. IEC 61000-4-2 Contact Discharge ESD Test Model
tr = 0.7ns to 1ns
30ns
60ns
t
100%
90%
10%
IPEAK
I
Figure 6. IEC 61000-4-2 ESD Test Model Current Waveform
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
______________________________________________________________________________________ 13
tance. Place the resistor at RS as close as possible to
the MAX13052 to minimize any possible noise coupling
at the input.
Power Supply and Bypassing
The MAX13050/MAX13052/MAX13053/MAX13054
require no special layout considerations beyond com-
mon practices. Bypass VCC and VCC2 to GND with a
0.1µF ceramic capacitor mounted close to the IC with
short lead lengths and wide trace widths.
ESD Protection
ESD-protection structures are incorporated on CANH
and CANL to protect against ESD encountered during
handling and assembly. CANH and CANL inputs have
extra protection to protect against static electricity found
in normal operation. Maxim’s engineers have developed
state-of-the-art structures to protect these pins against
±8kV ESD Contact Discharge without damage. After an
ESD event, the MAX13050/MAX13052/MAX13053/
MAX13054 continue working without latchup. ESD pro-
tection can be tested in several ways. The CANH and
CANL inputs are characterized for protection to ±8kV
using the IEC 61000-4-2 Contact Discharge Method per
IBEE Test facility.
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 5 shows the IEC 61000-4-2 Contact Discharge
Model, and Figure 6 shows the current waveform it
generates when discharged into a low impedance. This
model consists of a 100pF capacitor charged to the
ESD voltage of interest, which is then discharged into
the device through a 1.5kΩresistor.
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
14 ______________________________________________________________________________________
WAKE-UP
FILTER
WAKE-UP
MODE CONTROL
MUX
DOMINANT TIMEOUT DRIVER
THERMAL
SHUTDOWN
VCC
SPLIT
CANH
CANL
GND
RXD
STBY
TXD
MAX13050
R
R
Functional Diagrams
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
______________________________________________________________________________________ 15
WAKE-UP
FILTER
WAKE-UP
MODE CONTROL
MUX
TIMEOUT AND SLOPE-
CONTROL MODE DRIVER
THERMAL
SHUTDOWN
VCC
SPLIT
CANH
CANL
GND
RXD
RS
TXD
MAX13052
R
R
Functional Diagrams (continued)
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
16 ______________________________________________________________________________________
WAKE-UP
FILTER
WAKE-UP
MODE CONTROL
MUX
DOMINANT TIMEOUT DRIVER
THERMAL
SHUTDOWN
VCC
CANH
CANL
GND
RXD
RS
TXD
MAX13053
S
REF
R
R
Functional Diagrams (continued)
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
______________________________________________________________________________________ 17
WAKE-UP
FILTER
WAKE-UP
MODE CONTROL
MUX
DOMINANT TIMEOUT DRIVER
DRIVER
THERMAL
SHUTDOWN
VCC
VCC2
VCC2
CANH
CANL
GND
RXD
STBY
TXD
MAX13054
Functional Diagrams (continued)
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
18 ______________________________________________________________________________________
MAX13050
60Ω
60Ω
4.7nF
CANH
SPLIT
CANL
STBY
RXD
TXD
0.1µFVCC
CAN
CONTROLLER
GND
RXO
TXO
I/O
GND
VCC
MAX13053
CANH
CANL
REF
RXD
TXD
0.1µFVCC
CAN
CONTROLLER
GND
RXO
TXO
I/O
GND
VCC
S
MAX13054
CANH
CANL
LOGIC
RXD
TXD
0.1µFVCC
CAN
CONTROLLER
GND
RXO
TXO
I/O
GND
VCC
STBY
+3.3V
0.1µF
MAX13052
60Ω
60Ω
CANH
SPLIT
CANL
STBY
RXD
TXD
0.1µFVCC
CAN
CONTROLLER
GND
RXO
TXO
I/O
GND
VCC
4.7nF
TO BUS
TO BUS
60Ω
60Ω
4.7nF
TO BUS
60Ω
60Ω
4.7nF
TO BUS
Typical Operating Circuits
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
______________________________________________________________________________________ 19
CANL
REFRXD
1
2
8
7
S
CANHGND
VCC
TXD
3
4
6
5
MAX13053
CANL
VCC2
RXD
1
2
8
7
STBY
CANHGND
VCC
TXD
3
4
6
5
MAX13054
CANL
SPLITRXD
1
2
8
7
RS
CANHGND
VCC
TXD
3
4
6
5
MAX13052
CANL
SPLITRXD
SO
SO
SO
SO
1
2
8
7
STBY
CANHGND
VCC
TXD
TOP VIEW
3
4
6
5
MAX13050
Pin Configurations
.Chip Information
TRANSISTOR COUNT: 1400
PROCESS: BiCMOS
MAX13050/MAX13052/MAX13053/MAX13054
Industry-Standard High-Speed CAN
Transceivers with ±80V Fault Protection
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.
20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
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.)
SOICN .EPS
PACKAGE OUTLINE, .150" SOIC
1
1
21-0041 B
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
MAX
0.010
0.069
0.019
0.157
0.010
INCHES
0.150
0.007
E
C
DIM
0.014
0.004
B
A1
MIN
0.053A
0.19
3.80 4.00
0.25
MILLIMETERS
0.10
0.35
1.35
MIN
0.49
0.25
MAX
1.75
0.050
0.016L0.40 1.27
0.3940.386D
D
MINDIM
D
INCHES
MAX
9.80 10.00
MILLIMETERS
MIN MAX
16 AC
0.337 0.344 AB8.758.55 14
0.189 0.197 AA5.004.80 8
N MS012
N
SIDE VIEW
H 0.2440.228 5.80 6.20
e 0.050 BSC 1.27 BSC
C
HE
eBA1
A
D
0∞-8∞
L
1
VARIATIONS:
