MAX3051

Features:

 Low +3.3V Single-Supply Operation
 Wide -7V to +12V Common-Mode Range
 Small SOT23 Package 
Four Operating Modes
    High-Speed Operation Up to 1Mbps
    Slope-Control Mode to Reduce EMI (Up to 500kbps)
    Standby Mode
    Low-Current Shutdown Mode
 Thermal Shutdown
 Current Limiting


Application

Printers JetLink
Industrial Control and Networks
Telecom Backplane
Consumer Applications


Pinout




Specifications

V_CC to GND....................................................................-0.3V to +6V
TXD, RS, SHDN to GND...................................................-0.3V to +6V
RXD to GND....................................................................-0.3V to +6V
CANH, CANL to GND..................................................-7.5V to +12.5V
Continuous Power Dissipation (T_A = +70°C)
    8-Pin SO (derate 5.9mW/°C above +70°C).....................470mW
    8-Pin SOT23 (derate 9.7mW/°C above +70°C)...............774mW
Operating Temperature Range .............................-40°C to +85°C
Maximum Junction Temperature..........................................+150°C
Storage Temperature Range...............................-65°C to +150°C
Lead Temperature Range (soldering, 10s)..........................+300°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.


Description

The MAX3051 interfaces between the CAN protocol controller and the physical wires of the bus lines in a controller area network (CAN). The MAX3051 provides differential transmit capability to the bus and differential receive capability to the CAN controller. The MAX3051 is primarily intended for +3.3V single-supply applications that do not require the stringent fault protection specified by the automotive industry (ISO 11898).

The MAX3051 features four different modes of operation: high-speed, slope-control, standby, and shutdown mode. High-speed mode allows data rates up to 1Mbps. The slope-control mode can be used to program the slew rate of the transmitter for data rates of up to 500kbps. This reduces the effects of EMI, thus allowing the use of unshielded twisted or parallel cable. In standby mode, the transmitter is shut off and the receiver is pulled high, placing the MAX3051 in lowcurrent mode. In shutdown mode, the transmitter and receiver are switched off.

The MAX3051 input common-mode range is from -7V to +12V, exceeding the ISO 11898 specification of -2V to +7V. These features, and the programmable slew-rate limiting, make the part ideal for nonautomotive, harsh environments. It is available in 8-pin SO and SOT23 packages and operates over the -40°C to +85°C extended temperature range.