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MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
General Description
The MAX33053E and MAX33054E are +3.3V CAN
(Control Area Network) transceivers with integrated
protection for industrial applications. These devices have
extended ±65V fault protection for equipment where
overvoltage protection is required. It also incorporates
high ±25kV ESD HBM and an input common mode range
(CMR) of ±25V, exceeding the ISO 11898 specification
of -2V to +7V. This makes these parts well-suited for
applications that are in electrically noisy environments
where the ground planes are shifting relative to each
other. This family features a variety of options to address
common CAN application requirements; logic-level supply
input VL for interfacing with 1.62V to 3.6V logic, lowcurrent standby mode, silent-mode to disable the
transmitter, and a slow slew rate to minimize EMI.
These devices operate at a high-speed CAN data rate,
allowing up to 2Mbps on small networks. Maximum speed
on large networks may be limited by the number of nodes
in a network, the type of cabling used, stub length, and
other factors. These transceivers include a dominant
timeout to prevent bus lockup caused by controller error
or by a fault on the TXD input. When TXD remains in the
dominant state (low) for longer than TDOM, the driver is
switched to the recessive state, releasing the bus. The
MAX33053E features an S pin where it enables and
disables the transmitter for applications where you need
the transceiver to receive only. The MAX33054E features
a STBY pin for 3 modes of operation; standby mode for
low-current consumption, normal high-speed mode, or
a slow slew rate mode when an external 26.1kΩ is
connected between ground and STBY pin.
The MAX33053E and MAX33054E are available in a
standard 8-pin SOIC package and operate over the -40°C
to +125°C temperature range.
Applications
●● Programmable Logic
Controller
●● Instrumentation
●● Industrial Automation
●● Drone
●● Building Automation
19-100340; Rev 1; 4/20
●● Smart Grid Equipment
●● Motor Control
Benefits and Features
●● Integrated Protection Increases Robustness
• ±65V Fault Tolerant CANH and CANL
• ±25kV ESD HBM (Human Body Model)
• ±25V Extended Common Mode Input Range
(CMR)
• Transmitter Dominant Timeout Prevents Lockup
• Short-Circuit Protection
• Thermal Shutdown
●● Family Provides Flexible Design Options
• Slow Slew Rate to minimize EMI
• Silent Mode S Disables Transmitter
• STBY Input for Low-Current Mode, Slow Slew Rate
• 1.62V to 3.6V Logic-Supply (VL) Range
●● High-Speed Operation of Up to 2Mbps
●● Operating Temperature Range of -40°C to +125°C in
8-pin SOIC Package
Ordering Information appears at end of data sheet.
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Simplified Block Diagram
VDD
THERMAL
SHUTDOWN
VL
PROTECTION
TXD
RXD
DRIVER
PROTECTION
CANL
WAKE-UP
MODE
CONTROL
LEVEL SHIFTER
STBY/S
DOMINANT
TIMEOUT
CANH
DRIVER
MUX
WAKE-UP
FILTER
GND
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Maxim Integrated │ 2
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Absolute Maximum Ratings
VDD........................................................................-0.3V to +4.0V
CANH or CANL (Continuous)..................................-65V to +65V
TXD, STBY, S........................................................-0.3V to +4.0V
RXD.............................................................. -0.3V to (VL + 0.3)V
VL.............................................................. -0.3V to (VDD + 0.5V)
Short-Circuit Duration.................................................Continuous
Continuous Power Dissipation:
Single Layer Board
(TA = +70°C, derate 5.9mW/°C above +70°C.).........470.6mW
Multilayer Board
(TA = +70°C, derate 7.6mW/°C above +70°C.).........606.1mW
Operating Temperature Range.............................-40°C to 125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -60°C to +150°C
Soldering Temperature (reflow)........................................ +260°C
Lead Temperature (soldering, 10sec).............................. +300°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.
Package Information
8 SOIC
PACKAGE CODE
S8+4
Outline Number
21-0041
Land Pattern Number
90-0096
THERMAL RESISTANCE, SINGLE-LAYER BOARD:
Junction-to-Ambient (θJA)
170
Junction-to-Case (θJC)
40
THERMAL RESISTANCE, FOUR-LAYER BOARD:
Junction-to-Ambient (θJA)
132
Junction-to-Case (θJC)
38
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated │ 3
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Package Information (continued)
α
a
maxim
integrated
www.maximintegrated.com
TM
Maxim Integrated │ 4
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Electrical Characteristics
((VDD = 3.0V to 3.6V, VL = 1.62V to VDD, RL = 60Ω, CL = 15pF, TA = TMIN to TMAX, unless otherwise specified. Typical values are at
VDD = 3.3V, VL = 1.8V, and TA = +25°C, unless otherwise specified.) (Note 1))
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER
Supply Voltage
Logic Supply Voltage
VDD
3.0
3.6
V
VL
1.62
VDD
V
Dominant Supply Current
IDD_DOM
VDD = 3.3V, TXD = 0V
Recessive Supply Current
IDD_REC
VDD = TXD = 3.3V
ISTBY
Standby Supply Current
No load
4.5
8
RL = 60Ω
36
50
No load
3.6
CANH shorted to
CANL
3.6
mA
mA
STBY = logic high
33
μA
Silent Supply Current
IS
S = logic-high
2.5
mA
Logic Supply Current
IL
RXD = open
UVLO Threshold Rising
VUVLO_R
VDD rising
UVLO Threshold Falling
VUVLO_F
VDD falling
VL = 3.3V
40
VL = 1.8V
22
μA
2.7
1.6
V
V
FAULT PROTECTION
ESD Protection
(CANH, CANL to GND)
Human Body Model (HBM)
±25
Air-Gap ISO 10605, IEC 61000-4-2
±15
Contact ISO 10605, IEC 61000-4-2
±10
ESD Protection (All Other
Pins)
Human Body Model (HBM)
±4
Fault Protection Range
VFP
CANH or CANL to GND
-65
kV
kV
+65
V
Thermal Shutdown
TSHDN
+160
°C
Thermal Shutdown
Hysteresis
THYST
+20
°C
LOGIC INTERFACE (RXD, TXD, STBY, S)
Input High Voltage
Input Low Voltage
TXD Input Pullup Resistance
VIH
VIL
0.7 x VL
V
2.25V ≤ VL ≤ 3.6V
0.8
1.62V ≤ VL ≤ 2.25V
0.6
V
RPU_TXD
100
250
kΩ
STBY, S Input Pullup
Resistance
RPU_S
100
250
kΩ
Output High Voltage
VOH
Sourcing 4mA
Output Low Voltage
VOL
Sinking 4mA
VL - 0.5
V
0.4
V
CAN BUS DRIVER
Bus Output Voltage
(Dominant)
VO_DOM
t < tDOM, TXD = 0V,
RL = 60Ω
Bus Output Voltage
(Recessive)
VO_REC
TXD = VL, No load
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CANH
2.25
VDD
CANL
0.5
1.25
CANH
1
2
CANL
1
2
V
V
Maxim Integrated │ 5
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Electrical Characteristics (continued)
((VDD = 3.0V to 3.6V, VL = 1.62V to VDD, RL = 60Ω, CL = 15pF, TA = TMIN to TMAX, unless otherwise specified. Typical values are at
VDD = 3.3V, VL = 1.8V, and TA = +25°C, unless otherwise specified.) (Note 1))
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
RCM = 1KΩ, -5V ≤
VCM ≤ VDD, Figure 1
1.5
RCM = open
1.5
3
40
120
3
Bus Output Differential
Voltage (Dominant)
VOD_DOM
TXD = 0V, RL = 60 Ω
Output Voltage Standby
VO_STBY
VTXD = STBY = VL, no load
Bus Output Differential
Voltage (Recessive)
VOD_REC
TXD = VL
ISC_CANH
TXD = 0V, CANH = -65V
2
5
ISC_CANL
TXD = 0V, CANL = +65V
2
5
Short-Circuit Current
RL = 60 Ω
-10
+10
No load
-50
+50
UNITS
V
mV
mV
mA
RECEIVER
Common Mode Input Range
VCM
CANH or CANL to GND, RXD output valid
-25
+25
V
Common Mode Input Range
Standby Mode
VCM_S
CANH or CANL to GND, RXD output valid
-12
+12
V
0.9
V
Input Differential Voltage
(Dominant)
VID_DOM
-25V ≤ VCM ≤ 25V, TXD = VL
Input Differential Voltage
(Recessive)
VID_REC
-25V ≤ VCM ≤ 25V, TXD = VL
Standby Input Differential
Voltage (Dominant)
VID_SDOM
-12V ≤ VCM ≤ +12V, TXD = VL
Standby Input Differential
Voltage (Recessive)
VID_SREC
-12V ≤ VCM ≤ +12V, TXD = VL
Input Differential Hysteresis
Input Resistance
Differential Input Resistance
Input Capacitance
Differential Input
Capacitance
Input Leakage Current
VID_HYS
0.5
V
1.15
0.45
-25V ≤ VCM ≤ 25V
V
V
90
mV
RIN
TXD = VL
10
50
kΩ
RIN_DIFF
TXD = VL
20
100
kΩ
CIN
TXD = VL (Note 2)
62
110
pF
CIN_DIFF
TXD = VL (Note 2)
31
55
pF
100
220
μA
ILKG
VDD = VL = 0V
CANH = CANL = 3.3V
SWITCHING
Driver Rise Time
tR
RL = 60Ω, CL = 100pF, RCM is open, Figure 1
tF
13
ns
RL = 60Ω, CL = 100pF, RCM is open, Figure 1
21
ns
Slow Slew Driver Rise Time
tSSR
RL = 60Ω, CLD = 100pF, RCM is open, Figure 1
315
ns
Slow Slew Driver Fall Time
tSSF
RL = 60Ω, CLD = 100pF, RCM is open, Figure 1
140
ns
RL = 60Ω, Dominant-to Recessive and
Recessive-to-Dominant, Figure 2
85
140
ns
Driver Fall Time
TXD to RXD Loop Delay
tLOOP
TXD Propagation Delay
(Recessive to Dominant)
tONTXD
RL = 60Ω, CL = 100pF, RCM is open,
VDD = 3.3V, Figure 1
43
60
ns
TXD Propagation Delay
(Dominant to Recessive)
tOFFTXD
RL = 60Ω, CL = 100pF, RCM is open,
VDD = 3.3V, Figure 1
40
60
ns
RXD Propagation Delay
(Recessive to Dominant)
tONRXD
CL = 15pF, VDD = 3.3V, Figure 3
30
85
ns
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Maxim Integrated │ 6
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Electrical Characteristics (continued)
((VDD = 3.0V to 3.6V, VL = 1.62V to VDD, RL = 60Ω, CL = 15pF, TA = TMIN to TMAX, unless otherwise specified. Typical values are at
VDD = 3.3V, VL = 1.8V, and TA = +25°C, unless otherwise specified.) (Note 1))
PARAMETER
SYMBOL
CONDITIONS
RXD Propagation Delay
(Dominant to Recessive)
tOFFRXD
TXD-Dominant Timeout
tDOM
Figure 4
tWAKE
MIN
CL = 15pF, Figure 3
TYP
MAX
UNITS
40
85
ns
4.3
ms
1.3
Figure 5
2.3
μs
tPLH_STBY
CL = 15pF
300
ns
Standby to Normal Mode
Delay
tD_SN
CL = 15pF
20
μs
Normal to Standby Dominant
Delay
tD_NS
CL = 15pF
30
μs
Wake-Up Time
Standby Propagation Delay
Note 1: All units are 100% production tested at TA = +25°C. Specifications over temperature are guaranteed by design.
Note 2: Not production tested. Guaranteed at TA = +25°C.
CANH
TXD
RL
RCM
RL
CL
VDIFF
CLD
CANL
RCM
VCM
RXD
CL
VL
TXD
50%
50%
0V
tONTXD
tOFFTXD
VDIFF
0.9V
90%
10%
tR
VL
50%
TXD
0V
0.5V
tLOOP2
tF
tLOOP1
Figure 1. Transmitter Test Circuit and Timing Diagram
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VL
50%
RXD
0V
Figure 2. TXD to RXD Loop Delay
Maxim Integrated │ 7
MAX33053E/MAX33054E
CANH
+
VID
-
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
RXD
tDOM
CL
CANL
TRANSMITTER
ENABLED
VL
0.9V
VID
0.5V
0V
TRANSMITTER
DISABLED
0V
tONRXD
RXD
TXD
VL
tOFFRXD
50%
VCANH-VCANL
VOH
50%
VOL
Figure 3. RXD Timing Diagram
Figure 4. Transmitter-Dominant Timeout Timing Diagram
VL
STBY
CANH
RXD
RL
CL
CLD
CANL
tWAKE
VL
RXD
0V
VCANH-VCANL
Figure 5. Standby Receiver Propagation Delay
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Maxim Integrated │ 8
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Typical Operating Characteristics
VDD = 3.3V, VL = 1.8V, RL = 60Ω, CL = 15pF, TA = +25°C, unless otherwise noted.
VDD SUPPLY CURRENT
vs. TEMPERATURE
40
VDD SUPPLY CURRENT
vs. DATA RATE
18
MEAN SUPPLY CURRENT (mA)
35
30
TXD = 0V,
60Ω LOAD
IDD (mA)
25
20
15
TXD = 0V,
NO LOAD
10
TXD = VL,
NO LOAD
5
0
toc02
20
toc01
16
12
10
8
6
NO LOAD
4
2
0
-40 -25 -10 5
RL = 60Ω, CLD = 100pF
14
20 35 50 65 80 95 110 125
1
CANH/CANL OUTPUT VOLTAGE
vs. TEMPERATURE
DIFFERENTIAL OUTPUT (V)
OUTPUT VOLTAGE (V)
CANH
2.0
CANL
1.5
1.0
2
1.5
1
0.5
0.5
-40 -25 -10 5
0
20 35 50 65 80 95 110 125
40
60
80
100
TEMPERATURE (°C)
LOAD RESISTANCE (Ω)
STANDBY CURRENT
vs. TEMPERATURE
SILENT CURRENT
vs. TEMPERATURE
toc05
45
4.5
35
4.0
30
25
20
15
10
120
toc11
5.0
40
SILENT CURRENT (mA)
STANDBY CURRENT (µA)
toc04
2.5
2.5
3.5
3.0
2.5
2.0
1.5
1.0
5
0
1000
3
3.0
0.0
100
(CANH-CANL) DIFFERENTIAL OUTPUT
vs. LOAD
toc03
3.5
10
DATA RATE (kbps)
TEMPERATURE (°C)
0.5
-40 -25 -10
5
20 35 50 65 80 95 110
TEMPERATURE (°C)
www.maximintegrated.com
0.0
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Maxim Integrated │ 9
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Typical Operating Characteristics (continued)
VDD = 3.3V, VL = 1.8V, RL = 60Ω, CL = 15pF, TA = +25°C, unless otherwise noted.
SLEW RATE WITH
26.1kΩ TO GND ON STBY
SLEW RATE WITH
STBY GROUNDED
toc06
VCANH
VCANL
toc07
1V/div
1V/div
VCANH-
1V/div
1V/div
VCANH2V/div
CANL
2V/div
VTXD
2V/div
VTXD
2V/div
VRXD
2V/div
CANL
200ns/div
1µs/div
SLOW RISE/FALL TIME
vs. DATA RATE
TXD PROPAGATION DELAY
vs. TEMPERATURE
toc08
300
tOFFTXD
60
TXD TIMING (ns)
200
150
100
50
40
30
20
50
0
500
tONTXD
10
FALL TIME
0
toc09
70
RISE TIME
250
RISE/FALL TIME (ns)
VCANH
VCANL
1000
1500
0
2000
DATA RATE (kbps)
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
RXD PROPAGATION DELAY
vs. TEMPERATURE
toc10
60
58
RXD TIMING (ns)
56
54
tONRXD
52
50
48
46
44
tOFFRXD
42
40
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
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Maxim Integrated │ 10
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Pin Configuration
TOP VIEW
TOP VIEW
+
+
TXD
1
8
S
TXD
1
8
STBY
GND
2
7
CANH
GND
2
7
CANH
MAX33053E
MAX33054E
VDD
3
6
CANL
VDD
3
6
CANL
RXD
4
5
VL
RXD
4
5
VL
SOIC
SOIC
Pin Description
PIN
MAX33053E MAX33054E
NAME
FUNCTION
1
1
TXD
Transmit Data Input. Drive TXD high to set the driver in the recessive state. Drive TXD low
to set the driver in the dominant state. TXD has an internal pullup to VL.
2
2
GND
Ground
3
3
VDD
Supply Voltage. Bypass VDD to GND with a 0.1µF capacitor.
4
4
RXD
Receive Data Output. RXD is high when CANH and CANL are in the recessive state. RXD
is low when CANH and CANL are in the dominant state. RXD is referenced to VL.
5
5
VL
Logic-Level Voltage Supply Input. Bypass VL to GND with a 0.1μF capacitor as close to the
device as possible.
6
6
CANL
CAN Bus-Line Low
7
7
CANH
CAN Bus-Line High
—
8
STBY
Standby Mode. A logic-high on STBY pin selects the standby mode. In standby mode, the
transceiver is not able to transmit data and the receiver is in low-power mode. A logic-low
on STBY pin puts the transceiver in normal operating mode. A 26.1kΩ external resistor can
be used to connect the STBY pin to ground for the slow slew rate.
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. The receiver is active in normal operating mode.
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Maxim Integrated │ 11
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Detailed Description
Transmitter Output Protection
The MAX33053E and MAX33054E are a family of faultprotected CAN transceivers designed for harsh industrial
applications with a number of integrated robust protection
feature set. These devices provide a link between the
CAN protocol controller and the physical wires of the bus
lines in a control area network (CAN). They can be used
for DeviceNet™ applications as well.
The MAX33053E and MAX33054E protect the transmitter
output stage against a short-circuit to a positive or
negative voltage by limiting the driver current. Thermal
shutdown further protects the devices from excessive
temperatures that may result from a short or high ambient
temperature. The transmitter returns to normal operation
once the temperature is lowered below the threshold.
The two CAN transceivers are fault-protected up to ±65V,
making it suitable for applications where overvoltage
protection is required. These devices are rated up to a
high ±25kV ESD of HBM (Human Body Model), suitable
for protection during the manufacturing process, and even
in the field where there is human interface for installation
and maintenance. In addition, a common mode voltage
of ±25V enables communication in noisy environments
where there are ground plane differences between
different systems due to close proximity of heavy
equipment machinery or operation from different
transformers. The devices' dominant timeout prevents
the bus from being blocked by a hung-up microcontroller,
and the outputs CANH and CANL are short-circuit,
current-limited, and are protected against excessive
power dissipation by thermal shutdown circuitry that
places the driver outputs in a high-impedance state.
Transmitter-Dominant Timeout
Both devices can operate up to 2Mbps, while the
MAX33054E has an option to slow the slew rate to 8V/s
to minimize EMI, enabling the use of unshielded twisted
or parallel cable. The MAX33054E features a standby
mode where it shuts off the transmitter and reduces the
current to 45μA, typical. These CAN transceivers have a
VL pin where an integrated logic level translator enable
it to interface with low-voltage microcontrollers down to
1.8V ±10%.
±65V Fault Protection
These devices feature ±65V of fault protection. CANH and
CANL data lines are capable of withstanding a short from
-65V to +65V. This extended overvoltage range makes it
suitable for applications where accidental shorts to power
supply lines are possible due to human intervention.
Transmitter
The transmitter converts a single-ended input signal
(TXD) from the local CAN controller to differential outputs
for the bus lines CANH and CANL. The truth table for the
transmitter and receiver is provided in Table 1.
The devices feature a transmitter dominant timeout (tDOM)
that prevents erroneous CAN controllers from clamping
the bus to a dominant level by maintaining a continuous
low TXD signal. When TXD remains in the dominant state
(low) for greater than 2.5ms typical tDOM, the transmitter
is disabled, releasing the bus to a recessive state (Figure
4). After a dominant timeout fault, the transmitter is
re-enabled when receiving a rising edge at TXD. The
transmitter dominant timeout limits the minimum possible
data rate to 9kbps for standard CAN protocol.
Receiver
The receiver reads the differential input from the bus line
CANH and CANL and transfers this data as a singleended output RXD to the CAN controller. It consists of a
comparator that senses the difference VDIFF = (CANHCANL), with respect to an internal threshold of 0.7V. If
VDIFF > 0.9V, a logic-low is present on RXD. If VDIFF
< 0.5V, a logic-high is present. The CANH and CANL
common-mode range is ±25V. RXD is a logic-high when
CANH and CANL are shorted or terminated and undriven.
Standby Mode (MAX33054E)
Drive STBY pin high for standby mode, which switches
the transmitter off and the receiver to a low current and
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 wakeup
event on the bus line. Once the comparator detects a
dominant bus level greater than 2.5μs typical tWAKE, RXD
pulls low. Drive the STBY low for normal operation.
Slow Slew Rate (MAX33054E)
Connect a 26.1kΩ resistor between ground and the STBY
pin. The STBY pin voltage should be between 0.1V to
0.6V to remain in slow slew rate. This will change the
MAX33054E with a slow slew rate of 8V/μs for rising edge
compared with normal mode at 180V/μs. For falling edge,
the slow slew rate is 20V/μs compared with normal mode
at 140V/μs.
DeviceNet is a trademark of Open DeviceNet Vendor Association.
www.maximintegrated.com
Maxim Integrated │ 12
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Silent Mode (MAX33053E)
Drive S high to place the MAX33053E in silent mode. This
disables the transmitter regardless of the voltage level at
TXD. However, RXD is still active and monitors activity on
the bus line.
Logic Compatibility
A separate input VL allows the MAX33053E and
MAX33054E to communicate with logic systems down to
1.62V while operating up to a +3.6V supply. This provides
a reduced input voltage threshold to the TXD, STBY,
and S inputs, and provides a logic-high output at RXD
compatible with the microcontroller's supply rail. The logic
compatibility eliminates an external logic level translator and
longer propagation delay due to level shifting. Connect VL
to VDD to operate with +3.3V logic systems.
Applications Information
Reduced EMI and Reflections
In multidrop CAN applications, it is important to maintain
a single linear bus of uniform impedance that is properly
terminated at each end. A star, ring, or tree configuration
should never be used. Any deviation from the end-to-end
wiring scheme creates a stub. High-speed data edges on
a stub can create reflections back down to 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 short as
possible, especially when operating with high data rates.
Table 1. Transmitter and Receiver Truth Table (When Not Connected to the Bus)
STBY
TXD
TXD LOW
TIME
CANH
CANL
BUS STATE
RXD
LOW
LOW
< tDOM
HIGH
LOW
DOMINANT
LOW
LOW
LOW
> tDOM
VDD/2
VDD/2
RECESSIVE
HIGH
LOW
HIGH
X
VDD/2
VDD/2
RECESSIVE
HIGH
X = Don’t care
Typical Application Circuits
Multidrop CAN Bus
www.maximintegrated.com
Maxim Integrated │ 13
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Ordering Information
PART NUMBER
PIN 8
TEMP RANGE
PIN-PACKAGE
MAX33053EASA+
S (Silent)
-40°C to +125°C
8 SO
MAX33054EASA+
STBY (Standby)
-40°C to +125°C
8 SO
+Denotes a lead(Pb)-free/RoHS-compliant package.
www.maximintegrated.com
Maxim Integrated │ 14
MAX33053E/MAX33054E
+3.3V, 2Mbps CAN Transceiver with ±65V
Fault Protection, ±25V CMR, and ±25kV ESD
Revision History
REVISION
NUMBER
REVISION
DATE
0
5/18
Initial release
—
1
4/20
Added the POD
4
DESCRIPTION
PAGES
CHANGED
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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