MAX3053 Maxim Integrated Products, MAX3053 Datasheet

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MAX3053

Manufacturer Part Number
MAX3053
Description
Manufacturer
Maxim Integrated Products
Datasheet

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The MAX3053 interfaces between the control area net-
work (CAN) protocol controller and the physical wires of
the bus lines in a CAN. It is primarily intended for indus-
trial systems requiring data rates up to 2Mbps and fea-
tures ±80V fault protection against shorts to
high-voltage power buses. The device provides differ-
ential transmit capability to the bus and differential
receive capability to the CAN controller.
The MAX3053 has three different modes of operation:
high-speed, slope control, and shutdown. High-speed
mode allows data rates up to 2Mbps. In slope control
mode, data rates are between 40kbps and 500kbps so
the effects of EMI are reduced and unshielded twisted
or parallel cable may be used. In shutdown mode, the
transmitter is switched off, and the receiver is switched
to a low-current mode.
An autoshutdown function puts the device in 15µA shut-
down mode when the bus or CAN controller is inactive
for 47ms or greater.
The MAX3053 is available in an 8-pin SO package and
is specified for -40°C to +125°C operation.
19-2425; Rev 0; 4/02
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.
Industrial Control and Networks
Printers
Automotive Systems
HVAC Controls
Telecom 72V Systems
________________________________________________________________ Maxim Integrated Products
General Description
Low Supply Current CAN Transceiver
CONTROLLER
CAN
GND
Applications
TXD
RXD
±80V Fault-Protected, 2Mbps,
25kΩ TO 180kΩ
V
CC
100nF
V
TXD
RXD
RS
CC
o ±80V Fault Protection
o Three Operating Modes
o 15µA Low-Current Shutdown Mode
o Autoshutdown when Device Is Inactive
o Automatic Wakeup from Shutdown
o Thermal Shutdown
o Current Limiting
o Fully Compatible with the ISO 11898 Standard
Pin Configuration appears at end of data sheet.
MAX3053ESA
MAX3053ASA
MAX3053
High-Speed Operation up to 2Mbps
Slope Control Mode to Reduce EMI
(40kbps to 500kbps)
PART
CANH
SHDN
CANL
GND
100nF
Typical Operating Circuit
-40°C to +125°C
-40°C to +85°C
Ordering Information
TEMP RANGE
120Ω
120Ω
PIN-PACKAGE
8 SO
8 SO
Features
1

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MAX3053 Summary of contents

Page 1

... An autoshutdown function puts the device in 15µA shut- down mode when the bus or CAN controller is inactive for 47ms or greater. The MAX3053 is available in an 8-pin SO package and is specified for -40°C to +125°C operation. Industrial Control and Networks Printers Automotive Systems ...

Page 2

... ESD CANH, CANL (Note 2) 2 _______________________________________________________________________________________ Operating Temperature Ranges + 0.3V) MAX3053ASA ...............................................-40°C to +125°C CC MAX3053ESA .................................................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300° unless otherwise noted. Typical values are ...

Page 3

Low Supply Current CAN Transceiver DC ELECTRICAL CHARACTERISTICS (continued) = +5V ±10 60Ω GND PARAMETER SYMBOL DC BUS RECEIVER ( CANH and CANL externally driven (-2V < V TXD ...

Page 4

... Note 1: As defined by ISOSHDN, 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 MAX3053 values, see the truth table in the Transmitter and Receiver sections. ...

Page 5

... RECEIVER OUTPUT LOW vs. OUTPUT CURRENT 1600 1200 T = +25° +125°C A 800 400 T = -40° 125 OUTPUT CURRENT (mA) RECEIVER PROPAGATION DELAY L (DOMINANT TO RECESSIVE) 2V/div 300 40ns/div T = -40° +125°C A 1500 2000 20 25 MAX3053 toc09 DIFFERENTIAL INPUT 5 ...

Page 6

... CC 4 RXD Receive Data Output. RXD is a CMOS/TTL-compatible output from the physical bus lines CANH and CANL. Shutdown Input. Drive SHDN low to put the MAX3053 in shutdown mode. See the Detailed Description SHDN 5 section for a full explanation of SHDN behavior. CAN Bus Line LOW. CANL is fault protected to ±80V. ...

Page 7

... CANH–CANL RXD t ONTXD t ONRXD Figure 2. Timing Diagram for Dynamic Characteristics _______________________________________________________________________________________ ±80V Fault-Protected, 2Mbps, Test Circuits/Timing Diagrams V CC 0.1µ CANH TXD MAX3053 CANL RXD 30pF SHDN RS GND 24kΩ TO 180kΩ CANH 0.9V 0.5V RECESSIVE V SHDN t WAKE OFFTXD ...

Page 8

... CAN controller to differential outputs for the bus lines (CANH, CANL). Table 1 is the truth table for the transmitter and receiver. Connect RS to ground to set the MAX3053 to high- speed mode. When operating in high-speed mode, the MAX3053 can achieve transmission rates up to 2Mbps. ...

Page 9

... When the MAX3053 is in shutdown mode, only the wakeup comparator is active, and normal bus commu- nication is ignored. The remote master of the CAN sys- tem wakes up the MAX3053 with a signal greater than 9V on CANH. The local CAN controller wakes up the MAX3053 by driving SHDN high or TXD. ...

Page 10

... See Figures 5, RISE 6, and 7 for typical waveforms at various data rates. The MAX3053 requires no special layout considerations beyond common practices. Bypass V 1µF ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths. ...

Page 11

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2002 Maxim Integrated Products ± ...

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