參數(shù)資料
型號: MAX3053
廠商: Maxim Integrated Products, Inc.
元件分類: CAN
英文描述: 【80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceiver
中文描述: ±80V故障保護(hù)、2Mbps、低電源電流CAN收發(fā)器
文件頁數(shù): 8/11頁
文件大?。?/td> 317K
代理商: MAX3053
M
±80V Fault-Protected, 2Mbps,
Low Supply Current CAN Transceiver
8
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Detailed Description
The MAX3053 interfaces between the protocol con-
troller and the physical wires of a CAN bus. It is primari-
ly intended for industrial applications requiring data
rates up to 2Mbps and features ±80V fault protection
against shorts in high-voltage systems. This fault pro-
tection allows the device to withstand up to ±80V with
respect to ground with no damage to the device. The
built-in fault tolerance allows the device to survive in
industrial and automotive environments with no external
protection devices. The device provides differential
transmit capability to the bus and differential receive
capability to the CAN controller (Figure 4).
The device has three modes of operations: high-speed,
slope control, and shutdown. In high-speed mode, slew
rates are not limited, making 2Mbps transmission
speeds possible. Slew rates are controlled in slope
control mode, minimizing EMI and allowing use of
unshielded twisted or parallel cable. The device goes
into low-power operation in shutdown mode.
The transceiver is designed to operate from a single
+5V supply, and draws 56mA of supply current in dom-
inant state and 3.6mA in recessive state. In shutdown
mode, supply current is reduced to 15μA.
CANH and CANL are output short circuit current limited
and are protected against excessive power dissipation
by thermal-shutdown circuitry that places the driver
outputs into a high-impedance state.
Fault Protection
The MAX3053 features ±80V fault protection. This
extended voltage range of CANH and CANL bus lines
allows its use in high-voltage systems and communicat-
ing to high-voltage buses. If data is transmitting at
2Mbps, the fault protection is reduced to ±70V.
Transmitter
The transmitter converts a single-ended input (TXD)
from the CAN controller to differential outputs for the
bus lines (CANH, CANL). Table 1 is the truth table for
the transmitter and receiver.
High Speed
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.
Line drivers are switched on and off as quickly as pos-
sible. However, in this mode, no measures are taken to
limit the rise and fall slope of the data signal, allowing
for potential EMI emissions. If using the MAX3053 in
high-speed mode, use shielded twisted-pair cable to
avoid EMI problems.
THERMAL
SHUTDOWN
CANH
V
CC
TXD
RS
RXD
CANL
GND
AUTOSHUTDOWN
TRANSMITTER
CONTROL
MODE
SELECTION
RECEIVER
WAKE
0.75V
7.5V
SHDN
MAX3053
Figure 4. Block Diagram
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MAX3053ASA 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MAX3053ASA+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MAX3053ASA+T 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MAX3053ASA-T 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MAX3053ESA 制造商:Maxim Integrated Products 功能描述:+/-80V FAULT-PROTECTED, 2MBPS, LOW-SUPPLY CUR - Rail/Tube