GENERAL DESCRIPTION

The ADM3051 is a controller area network (CAN) physical

layer transceiver allowing a protocol layer CAN controller to access the physical layer bus. The ADM3051 complies with the ISO 11898 standard. It is capable of running at data rates up to 1 Mbps. The device has current-limiting and thermal shutdown features

to protect against output short circuits and situations where the

bus may be shorted to ground or power terminals in 24 V bus power systems. The part is fully specified over the industrial

temperature range of −40°C to +125°C and is available in an 8-lead SOIC package.

Three operating modes are available: high speed, slope control, and standby. Pin 8 (RS) is used to select the operating mode.

The low current standby mode can be selected by applying a

logic high to RS. The device can be set to operate with slope control to limit EMI

by connecting RS with a resistor to ground to modify the rise and fall of slopes. This mode facilitates the use of unshielded cables. Alternatively, disabling slope control by connecting RS to ground allows high speed operation. Shielded cables or other measures to control EMI are necessary in this mode.

FEATURES Physical layer CAN transceiver

5 V operation on VCC

Complies with ISO 11898 standard High speed data rates up to 1 Mbps Short-circuit protection on CANH and CANL against shorts to

power/ground in 24 V systems Unpowered nodes do not disturb the bus Connect 110 or more nodes on the bus Slope control for reduced EMI Thermal shutdown protection Low current standby mode

Industrial operating temperature range (−40°C to +125°C) Available in 8-lead SOIC package

APPLICATIONS

CAN data buses

Industrial field networks DeviceNet applications

CanOpen, CanKingdom