UC5350

PRELIMINARY

SLUS258A - MARCH 2000

BLOCK DIAGRAM

FEATURES

•

Pin Compatible with PCA82C250

and DeviceNet, SDS, ISO11898

Compatible

•

High Speed, up to 1Mbps

•

Differential Transmit to the Bus and

Receive from the Bus to the CAN

Controller

•

At Least 110 Nodes Can Be

Connected

•

100V Transient Protection on the

Transmit Output

•

24V Supply Cross Wire Protection

on CANH and CANL

•

No Bus Loading When Powered

Down

•

Operates over –40°C to +85°C

•

Unitrode DeviceNet ID#107

CAN Transceiver

UDG-96202

DESCRIPTION

The UC5350 Control Area Network Transceiver is designed for industrial

applications employing the CAN serial communications physical layer

per ISO 11898 standard. The device is a high speed transceiver de-

signed for use up to 1Mbps. Especially designed for hostile environ-

ments, this device features cross wire, loss of ground, over voltage, and

over temperature protections well as a wide common mode range.

The transceiver interfaces the single ended CAN controller with the dif-

ferential CAN bus found in industrial and automotive applications. It op-

erates over the –7V to +12V common mode range of the bus and will

withstand common mode transients of –25V to +18V as well as Schaff-

ner tests. Performance features include high differential input imped-

ance, a symmetrical differential signal driver and very low propogation

delay that improves bus bandwidth and length by reducing reflection and

distortion.

The transceiver operates over a wide temperature range, –40°C to

+85°C and is available in 8-pin SOIC and Dual-in-Line packages.

Inputs

System Mode

Output Mode

Outputs

TXD

RS

RXD

0

0

High Speed

Dominant

1.5V to 3V

0

1

0

High Speed

Recessive

–120mV to +12mV

1

High Z

0

High Speed

Recessive

–120mV to +12mV

1

X

1

Standby

High Z

0 at Bus = Dominant

1 at Bus = Recessive

FUNCTIONAL TABLE (VCC = 4.5V to 5.5V)