MAX3050_14 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – ±80V Fault-Protected, 2Mbps, Low-Supply Current CAN Transceivers

MAX3050/MAX3057
±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
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
V_CC
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
Ordering Information
PART
MAX3050ASA
MAX3057ASA
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
8 SO
8 SO
Pin Configuration
TOP VIEW
TXD 1
GND 2
VCC 3
RXD 4
MAX3050
MAX3057
8 RS
7 CANH
6 CANL
5 SHDN
SO
120Ω
CAN
CONTROLLER
TX0
RX0
GND
0.1µF
V_CC
CANH
MAX3050
MAX3057
TXD
CANL
RXD
30pF
RS
24kΩ TO 180kΩ
(100nF)
SHDN
GND
120Ω
( ) ARE FOR 3050 ONLY.
19-2670; Rev 1; 6/14