LT3960
2
I C to CAN-Physical Transceiver
FEATURES
DESCRIPTION
The LT®3960 is a robust high speed transceiver that
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Protected from Overvoltage Line Faults to 40V
2
2
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Up to 400kbps I C Communications
extends a single-master I C bus through harsh or noisy
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4V to 60V Power Supply Range with Internal 3.3V
Regulator
3.3V or 5V Bus Voltage
Extended Common Mode Range ( 36V)
8kV HBM ESD on CAN Pins, 2kV HBM ESD on
All Other Pins
environments at up to 400kbps using the CAN-physical
2
layer. One LT3960 sits near the I C master, creating from
SCL and SDA equivalent differential buses (I2CAN) on
two twisted pairs. At the other end of the twisted pairs, a
second LT3960 recreates the I2C bus locally for any slave
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2
2
2
I C devices. A built-in 3.3V LDO powers both the I C and
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Current Limited Drivers with Thermal Shutdown
Power-Up/Down Glitch Free Driver Outputs
Low Current Shutdown Mode
Transmit Data Dominant Timeout Function
E- and J-Grades Available
Available in a 10-Lead MSOP Package
AEC-Q100 Qualification in Progress
I CAN buses from a single input supply from 4V to 60V.
Alternatively, the LT3960 can be powered directly from a
3.3V or 5V supply.
The LT3960 is available in a 10-lead MSOP package.
All registered trademarks and trademarks are the property of their respective owners.
APPLICATIONS
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Industrial Networking
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Automotive Networking
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Remote Sensors
TYPICAL APPLICATION
I2CAN Bus Link with Large Ground Loop Voltage
Receiving I2C Traffic Across 25V
Common-Mode Differential
V
V
IN
4V TO 60V
CC
5V
2.2µF
ꢀꢁA ꢂꢀꢃAꢄꢅꢆ
V
IN
V
IN
ꢇꢄꢈꢁꢉꢄ
V
CC
3.3V
V
CANSDAH
CANSDAH
V
CC
CC
120Ω
120Ω
GND1
120Ω
120Ω
GND2
2.2µF
LT3960
LT3960
ꢀꢁAꢂꢃAꢀꢄꢅRꢆ
ꢇꢈꢉꢁꢊꢈ
10k 10k
10k 10k
CANSDAL
CANSCLH
CANSDAL
CANSCLH
SDA
SCL
SDA
SCL
SDA
SCL
SDA
SCL
CANSCLL
GND
CANSCLL
GND
HIGH = MASTER
EN/MODE
EN/MODE
FLOAT = SLAVE
ꢀꢁꢂꢃꢄꢀꢁꢂꢅ
ꢅꢆꢇꢈꢂꢉꢇ
3960 TA01
AC GROUND
LOOP ≤ 36V PEAK (V = 5V)
< 25V PEAK (V = 3.3V)
CC
CC
ꢀꢁꢂꢃ ꢄAꢃꢅꢆ
ꢀꢁꢂꢃꢄꢅꢆꢇ
ꢀꢁAꢂꢃꢄꢅꢆꢇꢃ ꢁꢈꢉꢊꢋꢌ
ꢍꢆꢎꢃRꢃꢇ ꢏꢐ ꢑꢒꢈꢃRꢒAꢁ ꢁꢇꢆ ꢓꢂ ꢕ ꢉ.ꢉꢂꢖ
ꢔꢔ
Rev. A
1
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