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MAX3057ASAMAXIMN/a2372avai【80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers


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MAX3057ASA
【80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceivers
General Description
The MAX3050/MAX3057 interface between the CAN
protocol controller and the physical wires of the bus
lines in a controller area network (CAN). They are pri-
marily intended for automotive systems requiring data
rates up to 2Mbps and feature ±80V fault protection
against short circuits in high-voltage power buses. They
provide differential transmit capability to the bus and
differential receive capability to the CAN controller.
The MAX3050/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 transmit-
ter and receiver are switched off.
The MAX3050 has an AutoShutdown™ function that
puts the device into a 15µA shutdown mode when the
bus or CAN controller is inactive for 4ms or longer.
The MAX3050/MAX3057 are available in an 8-pin SO
package and are specified for operation from -40°C to
+125°C.
Applications

Automotive Systems
HVAC Controls
Telecom 72V systems
Features
±80V Fault Protection for 42V SystemsFour 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*
MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers
Ordering Information
Typical Operating Circuit

19-2670; Rev 0; 10/02
Pin Configuration

AutoShutdown is a trademark of Maxim Integrated Products, Inc.Pending completion of testing.
MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS

(VCC= +5V ±10%, RL= 60Ω, RS = GND, TA= TMINto TMAX. 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.
VCCto GND ............................................................-0.3V to +6V
TXD, RS, RXD, SHDNto GND....................-0.3V to (VCC+ 0.3V)
CANH, CANL to GND..............................................-80V to +80V
RXD Shorted to GND.................................................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
MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers
Note 1:
As defined by ISO, bus value is one of two complementary logical values: dominant or recessive. The dominant value repre-
sents 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
Transmitterand Receiversections.
TIMINGCHARACTERISTICS
MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers

Figure 1. AC Test Circuit
Figure 2. Timing Diagram for Dynamic Characteristics
Figure 3. Time to Wake Up (tWAKE) (MAX3050)
MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers
Typical Operating Characteristics

(VCC= 5V, RL= 60Ω, CL= 100pF, TA= +25°C, unless otherwise specified.)
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