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 low-current 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.
The MAX3051 interfaces a CAN controller to the bus wires, providing differential transmit and receive capability. It operates from a single +3.3 V supply, offers four operating modes (high‑speed, slope‑control, standby, shutdown), and features a wide –7 V to +12 V common‑mode voltage range, making it suitable for non‑automotive, harsh‑environment applications.
The device is available in 8‑pin SO and 8‑pin SOT‑23 packages and operates over –40 °C to +85 °C. Typical applications include industrial control, telecom backplane, printers, and other consumer electronics that require a low‑power CAN interface.
| Supply Voltage | +3.3 V single‑supply |
|---|---|
| Maximum Data Rate (High‑speed mode) | 1 Mbps |
| Common‑mode Voltage Range | -7 V to +12 V |
| Operating Temperature Range | -40 °C to +85 °C |
In high‑speed mode the MAX3051 supports data rates up to 1 Mbps.
The device operates from a single +3.3 V supply.
It accepts a common‑mode voltage from –7 V to +12 V.
The transceiver is rated for –40 °C to +85 °C.