Datasheet LT3960 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | I2C to CAN-Physical Transceiver |
| Páginas / Página | 20 / 1 — FEATURES. DESCRIPTION. Protected from Overvoltage Line Faults to ±40V. Up … |
| Formato / tamaño de archivo | PDF / 1.1 Mb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Protected from Overvoltage Line Faults to ±40V. Up to 400kbps I2C Communications
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LT3960 I2C to CAN-Physical Transceiver
FEATURES DESCRIPTION
n
Protected from Overvoltage Line Faults to ±40V
The LT®3960 is a robust high speed transceiver that n
Up to 400kbps I2C Communications
extends a single-master I2C bus through harsh or noisy n
4V to 60V Power Supply Range with Internal 3.3V
environments at up to 400kbps using the CAN-physical
Regulator
layer. One LT3960 sits near the I2C master, creating from n
3.3V or 5V Bus Voltage
SCL and SDA equivalent differential buses (I2CAN) on n
Extended Common Mode Range (±36V)
two twisted pairs. At the other end of the twisted pairs, a n
±8kV HBM ESD on CAN Pins, ±2kV HBM ESD on
second LT3960 recreates the I2C bus locally for any slave
All Other Pins
I2C devices. A built-in 3.3V LDO powers both the I2C and n Current Limited Drivers with Thermal Shutdown I2CAN buses from a single input supply from 4V to 60V. n Power-Up/Down Glitch Free Driver Outputs Alternatively, the LT3960 can be powered directly from a n Low Current Shutdown Mode 3.3V or 5V supply. n Transmit Data Dominant Timeout Function The LT3960 is available in a 10-lead MSOP package. n E- and J-Grades Available All registered trademarks and trademarks are the property of their respective owners. n Available in a 10-Lead MSOP Package n AEC-Q100 Qualification in Progress
APPLICATIONS
n Industrial Networking n Automotive Networking n Remote Sensors
TYPICAL APPLICATION I2CAN Bus Link with Large Ground Loop Voltage Receiving I2C Traffic Across ±25V Common-Mode Differential
VCC VIN 5V 4V TO 60V 2.2µF SDA (SLAVE) VIN VIN 5V/DIV VCC CANSDAH CANSDAH V VCC CC 3.3V LT3960 120Ω 120Ω 2.2µF 10k 10k LT3960 10k 10k SDA(MASTER) CANSDAL CANSDAL 5V/DIV SDA SDA CANSCLH CANSCLH SDA SDA SCL SCL 120Ω 120Ω SCL SCL CANSCLL CANSCLL HIGH = MASTER EN/MODE GND GND EN/MODE FLOAT = SLAVE GND1 GND2 GND1–GND2 3960 TA01 AC GROUND 20V/DIV LOOP ≤ 36V PEAK (VCC = 5V) < 25V PEAK (V 3960 TA01b CC = 3.3V) 10µs/DIV SLAVE-MODE LT3960 POWERED BY INTERNAL LDO (VCC = 3.3V) Rev. 0 Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagrams Operation Applications Information Typical Applications Typical Application Related Parts
FEATURES DESCRIPTION
n
Protected from Overvoltage Line Faults to ±40V
The LT®3960 is a robust high speed transceiver that n
Up to 400kbps I2C Communications
extends a single-master I2C bus through harsh or noisy n
4V to 60V Power Supply Range with Internal 3.3V
environments at up to 400kbps using the CAN-physical
Regulator
layer. One LT3960 sits near the I2C master, creating from n
3.3V or 5V Bus Voltage
SCL and SDA equivalent differential buses (I2CAN) on n
Extended Common Mode Range (±36V)
two twisted pairs. At the other end of the twisted pairs, a n
±8kV HBM ESD on CAN Pins, ±2kV HBM ESD on
second LT3960 recreates the I2C bus locally for any slave
All Other Pins
I2C devices. A built-in 3.3V LDO powers both the I2C and n Current Limited Drivers with Thermal Shutdown I2CAN buses from a single input supply from 4V to 60V. n Power-Up/Down Glitch Free Driver Outputs Alternatively, the LT3960 can be powered directly from a n Low Current Shutdown Mode 3.3V or 5V supply. n Transmit Data Dominant Timeout Function The LT3960 is available in a 10-lead MSOP package. n E- and J-Grades Available All registered trademarks and trademarks are the property of their respective owners. n Available in a 10-Lead MSOP Package n AEC-Q100 Qualification in Progress
APPLICATIONS
n Industrial Networking n Automotive Networking n Remote Sensors
TYPICAL APPLICATION I2CAN Bus Link with Large Ground Loop Voltage Receiving I2C Traffic Across ±25V Common-Mode Differential
VCC VIN 5V 4V TO 60V 2.2µF SDA (SLAVE) VIN VIN 5V/DIV VCC CANSDAH CANSDAH V VCC CC 3.3V LT3960 120Ω 120Ω 2.2µF 10k 10k LT3960 10k 10k SDA(MASTER) CANSDAL CANSDAL 5V/DIV SDA SDA CANSCLH CANSCLH SDA SDA SCL SCL 120Ω 120Ω SCL SCL CANSCLL CANSCLL HIGH = MASTER EN/MODE GND GND EN/MODE FLOAT = SLAVE GND1 GND2 GND1–GND2 3960 TA01 AC GROUND 20V/DIV LOOP ≤ 36V PEAK (VCC = 5V) < 25V PEAK (V 3960 TA01b CC = 3.3V) 10µs/DIV SLAVE-MODE LT3960 POWERED BY INTERNAL LDO (VCC = 3.3V) Rev. 0 Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagrams Operation Applications Information Typical Applications Typical Application Related Parts