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MAX3051EKA+TMAIXMN/a2500avai+3.3V, 1Mbps, Low-Supply-Current CAN Transceiver
MAX3051ESA+MAXIMN/a5000avai+3.3V, 1Mbps, Low-Supply-Current CAN Transceiver
MAX3051ESA+TMAXICN/a2500avai+3.3V, 1Mbps, Low-Supply-Current CAN Transceiver


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MAX3051EKA+T-MAX3051ESA+-MAX3051ESA+T
+3.3V, 1Mbps, Low-Supply-Current CAN Transceiver
General Description
The MAX3051 interfaces between the CAN protocol
controller and the physical wires of the bus lines in a
controller area network (CAN). The MAX3051 provides
differential transmit capability to the bus and differential
receive capability to the CAN controller. The MAX3051
is primarily intended for +3.3V single-supply applications
that do not require the stringent fault protection specified
by the automotive industry (ISO 11898).
The MAX3051 features four different modes of opera-
tion: high-speed, slope-control, standby, and shutdown
mode. High-speed mode allows data rates up to 1Mbps.
The slope-control mode can be used to program the slew
rate of the transmitter for data rates of up to 500kbps.
This reduces the effects of EMI, thus allowing the use
of unshielded twisted or parallel cable. In standby mode,
the transmitter is shut off and the receiver is pulled high,
placing the MAX3051 in low-current mode. In shutdown
mode, the transmitter and receiver are switched off.
The MAX3051 input common-mode range is from -7V to
+12V, exceeding the ISO 11898 specification of -2V to
+7V. These features, and the programmable slew-rate
limiting, make the part ideal for nonautomotive, harsh
environments. The MAX3051 is available in 8-pin SO and
SOT23 packages and operates over the -40°C to +85°C
extended temperature range.
Applications
●Printers JetLink●Industrial Control and Networks●Telecom Backplane●Consumer Applications
Beneits and Features
●Use 3V Microcontroller with Same LDO Low +3.3V Single-Supply Operation●Common Mode Range Exceeds the ISO11898
Standard (-2V to +7V) Wide -7V to +12V Common-Mode Range●Uses Minimal Board SpaceSOT23 Package●Flexible Operation Optimizes Performance
and Power Consumption for Reduced Thermal
DissipationFour Operating ModesHigh-Speed Operation Up to 1MbpsSlope-Control Mode to Reduce EMI (Up to
500kbps)Standby ModeLow-Current Shutdown Mode●Robust Protection Increases System Reliability±12kV Human Body Model ESD ProtectionThermal ShutdownCurrent Limiting
Typical Operating Circuit at end of data sheet.

+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel
PARTTEMP RANGEPIN-
PACKAGE
TOP
MARK

MAX3051ESA+-40°C to +85°C8 SO—
MAX3051EKA+T-40°C to +85°C8 SOT23-8AEKF
CANL
SHDNRXD
CANHGND
VCC
TXD
SO/SOT23

TOP VIEW
MAX3051
MAX3051+3.3V, 1Mbps, Low-Supply-Current
CAN Transceiver
Ordering Information
Pin Coniguration
VCC to GND ............................................................-0.3V to +6V
TXD, RS, SHDN to GND .........................................-0.3V to +6V
RXD to GND ............................................................-0.3V to +6V
CANH, CANL to GND .........................................-7.5V to +12.5V
Continuous Power Dissipation (TA = +70°C)8-Pin SO (derate 5.9mW/°C above +70°C) .................470mW8-Pin SOT23 (derate 5.1mW/°C above +70°C) .......408.2mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature Range (soldering, 10s) ......................+300°C
Soldering Temperature (reflow) .......................................+260°C
(VCC = +3.3V ±5%, RL = 60Ω, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and
TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Supply CurrentIS
Dominant3570
Recessive25
Standby815µA
Shutdown CurrentISHDNVSHDN = VCC, TXD = VCC or unconnected1µA
Thermal-Shutdown ThresholdVTSH+160°C
Thermal-Shutdown Hysteresis25°C
TXD INPUT LEVELS

High-Level Input VoltageVIH2VCC + 0.3VV
Low-Level Input VoltageVIL0.8V
Input CapacitanceCIN5pF
Pullup ResistorRINTXD50100kΩ
CANH, CANL TRANSMITTER

Recessive Bus VoltageVCANH,
VCANL
VTXD = VCC, no load22.33V
VTXD = VCC, no load, VRS = VCC
(standby mode)-100+100mV
Off-State Output Leakage-2V < VCANH, VCANL < +7V, SHDN = HIGH-250+250µA
Input Leakage CurrentVCC = 0V, VCANH = VCANL = 5V-250+250µA
CANH Output VoltageVCANHVTXD = 0V2.45V
CANL Output VoltageVCANLVTXD = 0V1.25V
Differential Output(VCANH -
VCANL)
VTXD = 0V1.53.0
VTXD = 0V, RL = 45Ω1.23.0
VTXD = VCC, no load-500+50
VTXD = VCC, RL = 60Ω-120+12
MAX3051+3.3V, 1Mbps, Low-Supply-Current
CAN Transceiver
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.
Electrical Characteristics
(VCC = +3.3V ±5%, RL = 60Ω, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and
TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

CANH Short-Circuit CurrentICANHSC-7V ≤ VCANH ≤ 0V-200
Minimum foldback current-35
CANL Short-Circuit CurrentICANLSCVCC ≤ VCANL ≤ 12V200mA
RXD OUTPUT LEVELS

RXD High Output-Voltage LevelVOHI = -1mA0.8 x VCCVCCV
RXD Low Output-Voltage LevelVOLI = 4mA0.4V
DC BUS RECEIVER (VTXD = VCC; CANH and CANL externally driven; -7V ≤ VCANH, VCANL ≤ +12V, unless otherwise speciied)

Differential Input Voltage
(Recessive)VDIFF-7V ≤ VCM ≤ +12V0.5
VRS = VCC (standby mode)0.5
Differential Input Voltage
(Dominant)VDIFF
Dominant0.9
VRS = VCC (standby mode)1.1
Differential Input HysteresisVDIFF(HYST)20mV
CANH and CANL Input
ResistanceRI2050kΩ
Differential Input ResistanceRDIFF40100kΩ
MODE SELECTION (RS)

Input Voltage for High SpeedVSLP0.3 x VCCV
Input Voltage for StandbyVSTBY0.75 x VCCV
Slope-Control Mode VoltageVSLOPERRS = 25kΩ to 200kΩ0.4 x VCC0.6 x VCCV
High-Speed Mode CurrentIHSVRS = 0V-500µA
SHUTDOWN (SHDN)

SHDN Input Voltage HighVSHDNH2V
SHDN Input Voltage LowVSHDNL0.8V
SHDN Pulldown ResistorRINSHDN50100kΩ
MAX3051+3.3V, 1Mbps, Low-Supply-Current
CAN Transceiver
Electrical Characteristics (continued)
(VCC = +3.3V ±5%, RL = 60Ω, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and
TA = +25°C.)
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:
No other devices on the BUS.
Note 3:
BUS externally driven.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Delay TXD to Bus Active
(Figure 1)tONTXD
VRS = 0V (≤ 1Mbps)50RRS = 25kΩ (≤ 500kbps)183
RRS = 100kΩ (≤ 125kbps)770
Delay TXD to Bus Inactive
(Figure 1)tOFFTXD
VRS = 0V (≤ 1Mbps)70RRS = 25kΩ (≤ 500kbps)226
RRS = 100kΩ (≤ 125kbps)834
Delay Bus to Receiver Active
(Figure 1)tONRXD
VRS = 0V (≤ 1Mbps)80RRS = 25kΩ (≤ 500kbps)200
RRS = 100kΩ (≤ 125kbps)730
Delay Bus to Receiver Inactive
(Figure 1)tOFFRXD
VRS = 0V (≤ 1Mbps)100RRS = 25kΩ (≤ 500kbps)245
RRS = 100kΩ (≤ 125kbps)800
Differential-Output Slew RateSR
VRS = 0V (≤ 1Mbps)96
V/μs
RRS = 25kΩ (≤ 500kbps)12.5
RRSS = 100kΩ (≤ 125kbps)2.9
RRS = 200kΩ (≤ 62.5kbps)1.6
Bus Dominant to RXD ActivetDRXDLVRS > 0.8 x VCC, standby, Figure 21μs
Standby to Receiver ActivetSBRXDLBUS dominant, Figure 24μs
SHDN to Bus InactivetOFFSHDNTXD = GND, Figure 3 (Note 2)1μs
SHDN to Receiver ActivetONSHDNBUS dominant, Fi gur e 3 (Note 3)4μs
SHDN to StandbytSHDNSBFigure 420μs
ESD ProtectionHuman Body Model±12kV
MAX3051+3.3V, 1Mbps, Low-Supply-Current
CAN Transceiver
Timing Characteristics
Figure 1. Timing DiagramFigure 2. Timing Diagram for Standby Signal
Figure 3. Timing Diagram for Shutdown SignalFigure 4. Timing Diagram for Shutdown-to-Standby Signal
TXD
VDIFF0.9V
RXD
0.5V
VCC/2VCC/2
tONTXD
tONRXD
tOFFTXD
tOFFRXD
VCC/2VCC/2
Figure 1
VDIFF
tSBRXDL
tDRXDL
1.1V
RXD
BUS EXTERNALLY
DRIVEN
VCC x 0.75
VCC/2VCC/2
Figure 2
SHDN
VDIFF
tOFFSHDNtONSHDN
RXD
BUS EXTERNALLY
DRIVEN
VCC/2
VCC/2
VCC/2
0.5V
Figure 3
0.75V x VCC
SHDN
VCC/2
tSHDNSB
Figure 4
MAX3051+3.3V, 1Mbps, Low-Supply-Current
CAN Transceiver
Timing Diagrams
(VCC = +3.3V, RL = 60Ω, CL = 100pF, TA = +25°C, unless otherwise speciied.)
SUPPLY CURRENT vs. DATA RATE

MAX3051 toc02
DATA RATE (kbps)
SUPPLY CURRENT (mA)
TA = +25°C
TA = -40°C
TA = +85°C
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE (SHDN = VCC)

MAX3051 toc03
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (nA)3510-15
DRIVER PROPAGATION DELAY
vs. TEMPERATURE
MAX3051 toc06
DRIVER PROPAGATION DELAY (ns)3510-15
RRS = GND, DATA RATE = 100kbps
RECESSIVE
DOMINANT
STANDBY SUPPLY CURRENT
vs. TEMPERATURE (RS = VCC)

MAX3051 toc04
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT (3510-15
RECEIVER OUTPUT LOW
vs. OUTPUT CURRENT
MAX3051 toc07
VOLTAGE RXD (V)3551015252030
TA = +25°C
TA = -40°C
TA = -85°C
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE

MAX3051 toc05
TEMPERATURE (°C)
RECEIVER PROPAGATION DELAY (ns)3510-15
RRS = GND
RECESSIVE
DOMINANT
SLEW RATE vs. RRS AT 100kbps

MAX3051 toc01
RRS (kΩ)
SLEW RATE (V/
MAX3051+3.3V, 1Mbps, Low-Supply-Current
CAN Transceiver
Typical Operating Characteristics
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