ISO1050 Isolated CAN Transceiver

1 Features

• Meets the requirements of ISO11898-2

• 5000-VRMS isolation (ISO1050DW)

• 2500-VRMS isolation (ISO1050DUB)

• Fail-safe outputs

• Low loop delay: 150 ns (typical), 210 ns

(maximum)

• 50-kV/μs typical transient immunity

• Bus-fault protection of –27 V to 40 V

• Driver (TXD) dominant time-out function

• I/O voltage range supports 3.3 V and 5 V

microprocessors

• Safety-related certifications

– VDE approval per DIN EN IEC 60747-17 (VDE

0884-17)

– UL 1577 approved

– CSA approved for IEC 61010-1, IEC 60601-1

– TUV Reinforced Insulation Approval for

EN/UL/CSA 62368-1 (ISO1050DW-Only)

– CQC reinforced insulation per GB4943.1

(ISO1050DW-only)

– Typical 25-year life at rated working voltage

(see application report SLLA197 and Life

Expectancy vs Working Voltage)

2 Applications

• Industrial automation, control, sensors, and drive

systems

• Building and climate control (HVAC) automation

• Security systems

• Transportation

• Medical

• Telecom

• CAN bus standards such as CANopen, DeviceNet,

NMEA2000, ARINC825, ISO11783, CAN Kingdom,

CANaerospace

3 Description

The ISO1050 is a galvanically isolated CAN

transceiver that meets the specifications of the

ISO11898-2 standard. The device has the logic input

and output buffers separated by a silicon oxide (SiO2)

insulation barrier that provides galvanic isolation of

up to 5000 VRMS for ISO1050DW and 2500 VRMS

for ISO1050DUB. Used in conjunction with isolated

power supplies, the device prevents noise currents on

a data bus or other circuits from entering the local

ground and interfering with or damaging sensitive

circuitry.

As a CAN transceiver, the device provides differential

transmit capability to the bus and differential receive

capability to a CAN controller at signaling rates up to

1 megabit per second (Mbps). The device is designed

for operation in especially harsh environments, and it

features cross-wire, overvoltage and loss of ground

protection from –27 V to 40 V and overtemperature

shutdown, as well as –12V to 12V common-mode

range.

The ISO1050 is characterized for operation over the

ambient temperature range of –55°C to 105°C.

Device Information(1)

PART NUMBER

PACKAGE

PACKAGE SIZE ((2))

ISO1050

SOP (8)

9.5 mm × 10.4 mm

SOIC (16)

10.3 mm × 10.3 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

RXD

TXD

CANH

CANL

Simplified Schematic

ISO1050

SLLS983L – JUNE 2009 – REVISED OCTOBER 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.