MAX3055 Datasheet | Maxim Integrated

MAX3054/MAX3055/ MAX3056 ±80V Fault-Protected/Tolerant CAN Transceiver General Description The MAX3054/MAX3055/MAX3056 are interfaces between the protocol controller and the physical wires of the bus lines in a controller area network (CAN). The devices provide differential transmit capability and switch to single-mode if certain fault conditions occur. The MAX3054/MAX3055/MAX3056 guarantee full wakeup capability during failure modes. The extended fault-protected voltage range of CANH and CANL bus lines of ±80V. Current-limiting and thermalprotection circuits protect the transmitter output stage against overcurrent faults to prevent destruction of the transmitter output stage. The CANH and CANL lines are also protected against electrical transients that may occur in rugged environments. The transceiver provides three low-power modes that can be entered and exited through pins STB and EN. An output INH pin can be used for deactivation of an external voltage regulator. The MAX3054/MAX3055/MAX3056 are designed to provide optimal operation for a specified data rate. The MAX3054 is ideal for high data rates of 250kbps. The MAX3055 is used for data rates of 125kbps and the MAX3056 is designed for 40kbps applications. For 40kbps and 125kbps versions, a built-in slope-control feature allows the use of unshielded cables, and receiver input filters guarantee high noise immunity. Applications - - Industrial HVAC Typical Operating Circuit CAN CONTROLLER VBATT +12V BATTERY +5V 23 5 6 41 TXD RXD STB EN ERR INH VCC 10 7 WAKE MAX305_ GND 13 100n F RTH 8 CAN BUS CANH CANL 11 12 BATT 14 RTL FAULT TO 80V Features - - ±80V Fault Protection - - Low RFI/Excellent EMC Immunity - - Full Wake-Up Capability During Failure Modes - - Bus Failure Management - - Support Single-Wire Transmission Mode with Ground Offset Voltages Up to...