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SLLS983A – JUNE 2009 – REVISED JULY 2009
ISOLATED CAN TRANSCEIVER
1
FEATURES
4000-V
PEAK
Isolation
Failsafe Outputs
Low Loop Delay: 150 ns Typical
50 kV/µs Typical Transient Immunity
Meets or Exceeds ISO 11898 requirements
Bus-Fault Protection of –27 V to 40 V
Dominant Time-Out Function
UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2), IEC
61010-1, IEC 60950-1 and CSA Approval
Pending
3.3-V Inputs are 5-V Tolerant
Typical 25-Year Life at Rated Working Voltage
(see Application Report
and
APPLICATIONS
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CAN Data Buses
Industrial Automation
– DeviceNet Data Buses
– CANopen Data Buses
– CANKingdom Data Buses
Medical Scanning and Imaging
Security Systems
Telecom Base Station Status and Control
HVAC
Building Automation
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2
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DESCRIPTION
The ISO1050 is a galvanically isolated CAN transceiver that meets or exceeds the specifications of the ISO
11898 standard. The device has the logic input and output buffers separated by a silicon oxide (SiO
2
) insulation
barrier that provides galvanic isolation of up to 4000 V
PEAK
. 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). Designed for operation in
especially harsh environments, the device features cross-wire, overvoltage and loss of ground protection from
–27 V to 40 V and overtemperature shut-down, as well as a –12 V to 12 V common-mode range.
The ISO1050 is characterized for operation over the ambient temperature range of –55°C to 105°C.
DW PACKAGE
Vcc1
GND1
RXD
nc
nc
TXD
GND1
GND1
1
2
16
15
Vcc2
GND2
nc
CANH
CANL
nc
GND2
GND2
FUNCTION DIAGRAM
GALVANIC ISOLATION
DUB PACKAGE
Vcc1
RXD
1
2
3
4
8
7
6
5
Vcc2
CANH
CANL
GND2
RXD
W
3
4
5
6
7
8
PR
EV
IE
14
13
12
11
10
9
CANH
CANL
TXD
GND1
TXD
1
2
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Copyright © 2009, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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