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MAX3050ASA+ |MAX3050ASAMAXIMN/a30avai±80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers
MAX3050ASA+TMAXIMN/a5000avai±80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers
MAX3057ASA+ |MAX3057ASAMAXIMN/a1600avai±80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers
MAX3057ASA+TMAXIMN/a5000avai±80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers


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MAX3050ASA+-MAX3050ASA+T-MAX3057ASA+-MAX3057ASA+T
±80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers
General Description
The MAX3050 and MAX3057 interface between the
CAN protocol controller and the physical wires of the bus
lines in a control area network (CAN). They are primarily
intended for systems requiring data rates up to 2Mbps
and feature ±80V fault protection against shorts in high-
voltage power buses. They provide differential transmit
capability to the bus and differential receive capability to
the CAN controller.
The MAX3050 and MAX3057 have four modes of operation:
high speed, slope control, standby, and shutdown. High-
speed mode allows data rates up to 2Mbps. In slope-control
mode, data rates are 40kbps 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 MAX3050 has an AutoShutdown™ function that puts
the device into a 15ms shutdown mode when the bus or
CAN controller is inactive for 4ms or longer.
The MAX3050 and MAX3057 are available in an 8-pin
SO package and are specified for operation from -40°C
to +125°C.
Applications
●HVAC Controls●Telecom 72V systems
Features
●±80V Fault Protection for 42V Systems●Four Operating Modes: High-Speed Operation Up to 2Mbps Slope-Control Mode to Reduce EMI (40kbps to 500kbps) Standby Mode Low-Current Shutdown Mode●AutoShutdown when Device is Inactive (MAX3050)●Automatic Wake-Up from Shutdown (MAX3050)●Thermal Shutdown●Current Limiting●Fully Compatible with the ISO 11898 Standard
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
PARTTEMP RANGEPIN-PACKAGE
MAX3050ASA
-40°C to +125°C8 SO
MAX3057ASA
-40°C to +125°C8 SO
CANL
RXD
CANHGND
VCC
TXD
TOP VIEW
MAX3050
MAX3057

SHDN
MAX3050
MAX3057

CAN
CONTROLLER
TXD
VCC
RXDGND
CANH
CANL
VCC
(100nF)
120Ω
120Ω
TX0
RX0
GND
0.1µF
30pF
24kΩ TO 180kΩ
SHDN
( ) ARE FOR 3050 ONLY.
MAX3050/MAX3057±80V Fault-Protected, 2Mbps, Low-Supply
Current CAN Transceivers
Ordering Information
Pin Coniguration
Typical Operating Circuit
VCC 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 (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 to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
(VCC = +5V ±10%, RL = 60Ω, RS = GND, TA = TMIN to TMAX. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Supply CurrentIS
Dominant (Note 1)5672
Dominant no load6
Recessive (Note 1)3.65.5
Recessive no load5.5
Quiescent Current Standby ModeIQVRS = VCC125260µA
Shutdown Supply Current IQSHDNSHDN = GND1530µA
Thermal-Shutdown Threshold 160°C
Thermal-Shutdown Hysteresis20°C
TXD INPUT LEVELS

High-Level Input VoltageVIH2V
Low-Level Input VoltageVIL0.4V
High-Level Input CurrentIIHVTXD = VCC1µA
Pullup ResistorRINTXD20kΩ
CANH, CANL TRANSMITTER

Recessive Bus VoltageVCANH,
VCANLVTXD = VCC, no load23V
Off-State Output Leakage ILO
-2V < VCANH, VCANL < +7V
SHDN = GND, VTXD = VCC-2+1-80V < VCANH, VCANL < +80V
SHDN = GND, VTXD = VCC-4+4
CANH Output VoltageVCANHVTXD = 03.0VCCV
CANL Output VoltageVCANLVTXD = 002.0V
Differential Output
(VCANH - VCANL)DVCANH,
VCANL
VTXD = 01.55VVTXD = 0, RL = 45Ω1.5
VTXD = VCC, no load-500+50mV
CANH Short-Circuit CurrentISCVCANH = -5V-200mA
CANL Short-Circuit CurrentISCVCANL = 18V200mA
ESD CANH, CANL (Note 2)
Human Body Model±2IEC1000-4-2 Air Gap±3
MAX3050/MAX3057±80V Fault-Protected, 2Mbps, Low-Supply
Current CAN Transceivers
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.
DC Electrical Characteristics
(VCC = +5V ±10%, RL = 60Ω, RS = GND, TA = TMIN to TMAX. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DC Bus Receiver (VTXD = VCC; CANH and CANL externally driven; -2V < VCANH, VCANL < +7V, unless otherwise speciied)

Differential Input Voltage
(Recessive)VDIFF-7V < VCANH, VCANL < +12V-1.0+0.5V
Differential Input Voltage
(Dominant)VDIFF-7V < VCANH, VCANL < +12V0.93.3V
Differential Input HysteresisVDIFF
(HYST)150mV
CANH Input Wake-Up Voltage
Threshold
VCANH
(SHDN)SHDN = GND, VTXD = VCC (MAX3050)69V
RXD High-Level Output VoltageVOHI = -100µA0.8 x
VCCV
RXD Low-Level Output VoltageVOL
I = 10mA0.8I = 5mA0.4
CANH and CANL Input
ResistanceRI525kΩ
Differential Input ResistanceRDIFF10100kΩ
MODE SELECTION (RS)

Input Voltage for High SpeedVSLP0.3 x
VCCV
Input Voltage for StandbyVSTBY0.75 x
VCCV
Slope-Control Mode VoltageVSLOPERRS = 24kΩ to 180kΩ0.4 x
VCC
0.6 x
VCCV
Slope-Control Mode CurrentISLOPERRS = 24kΩ to 180kΩ-10-200µA
Standby ModeISTBY-10+10µA
High-Speed Mode CurrentIHSVRS = 0-500µA
SHUTDOWN

SHDN Input Pullup ResistorRINSHDNMAX3057500900kΩ
SHDN Input Voltage High2V
MAX3050/MAX3057±80V Fault-Protected, 2Mbps, Low-Supply
Current CAN Transceivers
DC Electrical Characteristics (continued)
(VCC = +5V ±10%, RL = 60Ω, CL = 100pF, TA = TMIN to TMAX. Typical values are at VCC = +5V and TA = +25°C.) (Figures 1, 2, and 3)
Note 1:
As defined by ISO, 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 MAX3050 and MAX3057 values, see the truth table in the
Transmitter and Receiver sections under Detailed Description.
Note 2:
The ESD structures do not short out CANH and CANL under an ESD event while -7V < CANH, CANL < +12V.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TIMING

Minimum Bit TimetBIT
VRS = 0 (2Mbps)0.5
µs RRS = 24kΩ (500kbps)2
RRS = 100kΩ (125kbps)8
RRS = 180kΩ (62.5kbps)25
Delay TXD to Bus ActivetONTXDVRS = 040ns
Delay TXD to Bus InactivetOFFTXDVRS = 075ns
Delay TXD to Receiver ActivetONRXD
VRS = 0 (2Mbps)120ns
RRS = 24kΩ (500kbps)0.4RRS = 100kΩ (125kbps)1.6
RRS = 180kΩ (62.5kbps)5.0
Delay TXD to Receiver InactivetOFFRXD
VRS = 0 (2Mbps)130ns
RRS = 24kΩ (500kbps)0.45RRS = 100kΩ (125kbps)1.6
RRS = 180kΩ (62.5kbps)5.0
Differential Output Slew RateSR
RRS = 24kΩ (500kbps)14
V/µs RRS = 100kΩ (125kbps)7
RRS = 180kΩ (62.5kbps)1.6
Bus Dominant to RXD LowStandby mode10 µs
Time to Wake Up: CANH > 9V tWAKESHDN = GND, VTXD = VCC (MAX3050) 10µs
Time to Sleep Mode when Bus Is
RecessivetSHDNCSHDN = 100nF (MAX3050)1047ms
MAX3050/MAX3057±80V Fault-Protected, 2Mbps, Low-Supply
Current CAN Transceivers
Timing Characteristics
Figure 1. AC Test Circuit
Figure 2. Timing Diagram for Dynamic CharacteristicsFigure 3. Time to Wake-Up (tWAKE) (MAX3050)
MAX3050
MAX3057

CAN
CONTROLLER
TXD
VCC
RXDGND
CANH
CANL
VCC
(100nF)
120Ω
120Ω
TX0
RX0
GND
0.1µF
30pF
24kΩ TO 180kΩ
SHDN
100pF
( ) ARE FOR MAX3050 ONLY.
CANH - CANL
RXD
TXD
CANL
CANH
0.9V
VCC/2VCC/2
tONRXD
tONTXD
tOFFRXD
tOFFTXD
0.5VRECESSIVE
DOMINANT
CANH
tWAKE
VSHDN
VSHDN = 2V
MAX3050/MAX3057±80V Fault-Protected, 2Mbps, Low-Supply
Current CAN Transceivers
(VCC = 5V, RL = 60Ω, CL = 100pF, TA = +25°C, unless otherwise speciied.)
MAX3050 toc02
SLEEP TIME (ms)
AUTOSHUTDOWN VS. CSHDN
CSHDN (nF)
SUPPLY CURRENT vs. DATA RATE

MAX3050 toc03
DATA RATE (kbps)
SUPPLY CURRENT (mA)
TA = +125°CTA = +25°C
TA = -40°C
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE, RRS = GND

MAX3050 toc04
TEMPERATURE (°C)
RECEIVER PROPAGATION DELAY (ns)5520-15
RECESSIVE
DOMINANT
DRIVER PROPAGATION DELAY
vs. TEMPERATURE, RRS = GND

MAX3050 toc05
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (ns)5926-7
RECESSIVE
DOMINANT
RECEIVER OUTPUT LOW
vs. OUTPUT CURRENT

MAX3050 toc06
OUTPUT CURRENT (mA)
VOLTAGE RXD (mV)15105
TA = +125°C
TA = +25°C
TA = -40°C
RECEIVER OUTPUT HIGH
vs. OUTPUT CURRENT

MAX3050 toc07
VOLTAGE RXD (mV)15105
TA = +125°C
TA = +25°C
TA = -40°C
SLEW RATE vs. RRS
MAX3057

MAX3050 toc01
RRS (kΩ)
SLEW RATE (V/µs)
TA = -40°C
TA = +25°C
TA = -+125°C
DIFFERENTIAL VOLTAGE
vs. DIFFERENTIAL LOAD RL

MAX3050 toc08
DIFFERENTIAL VOLTAGE (V)
TA = +125°C
TA = +25°C
TA = -40°C
SUPPLY CURRENT
vs. TEMPERATURE IN STANDBY MODE

MAX3050 toc09
SUPPLY CURRENT (µA)5520-15
MAX3050/MAX3057±80V Fault-Protected, 2Mbps, Low-Supply
Current CAN Transceivers
Typical Operating Characteristics
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