Datasheet LTC4310-1, LTC4310-2 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Hot-Swappable I2C Isolators |
| Pages / Page | 20 / 1 — FeaTures. DescripTion. Bidirectional I2C Communication Between Two. … |
| File Format / Size | PDF / 241 Kb |
| Document Language | English |
FeaTures. DescripTion. Bidirectional I2C Communication Between Two. Isolated Buses. Full Isolation with Inexpensive Ethernet
Model Line for this Datasheet
- LTC4310CDD-1#PBF LTC4310CDD-1#TRPBF LTC4310CDD-2#PBF LTC4310CDD-2#TRPBF LTC4310CMS-1#PBF LTC4310CMS-1#TRPBF LTC4310CMS-2#PBF LTC4310CMS-2#TRPBF LTC4310IDD-1#PBF LTC4310IDD-1#TRPBF LTC4310IDD-2#PBF LTC4310IDD-2#TRPBF LTC4310IMS-1#PBF LTC4310IMS-1#TRPBF LTC4310IMS-2#PBF LTC4310IMS-2#TRPBF
Text Version of Document
LTC4310-1/LTC4310-2 Hot-Swappable I2C Isolators
FeaTures DescripTion
n
Bidirectional I2C Communication Between Two
The LTC®4310 provides bidirectional I2C communications
Isolated Buses
between two I2C buses whose grounds are isolated from n
Full Isolation with Inexpensive Ethernet
one another. Each LTC4310 encodes I2C bus logic states
Transformers or Capacitors
into signals that are transmitted across an isolation barrier n
Low Voltage Level Shifting
to another LTC4310. The receiving LTC4310 decodes the n
I2C Maximum Operating Frequency:
transmission and drives its l2C bus to the appropriate logic
100kHz for LTC4310-1
state. The isolation barrier can be bridged by an inexpensive
400kHz for LTC4310-2
Ethernet, or other transformer, to achieve communications n
I2C Specification Compliant VOL, VIL
across voltage differences reaching thousands of volts, or n ±5kV Human Body Model ESD Protection it can be bridged by capacitors for lower voltage isolation. n Rise Time Accelerators The LTC4310-1 is intended for use in 100kHz I2C systems. n SDA, SCL Hot-Swapping The LTC4310-2 is intended for 400kHz I2C systems. n Very Low Shutdown Current Rise time accelerators provide strong pull-up currents on n Stuck Bus Disconnect and Recovery SCL and SDA rising edges to meet rise time specifications n Thermal Shutdown for heavily loaded systems. Data and clock Hot Swap™ n 10-Lead MSOP and 3mm × 3mm DFN Packages circuitry prevent data corruption when a card is inserted into or removed from a live bus. When a bus is stuck low
applicaTions
for 37ms, the LTC4310 turns off its pull-down devices n Isolated I2C, SMBus and PMBus Interfaces and generates up to sixteen clocks and a STOP bit in an n Isolated Power Supplies attempt to free the bus. Driving EN low sets the LTC4310 n Positive-to-Negative Rail Communications in a very low current shutdown mode to conserve power. n Power-over-Ethernet L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion 1500V Isolated I2C System LTC4310 Operating Through 20kV/µs Common Mode Transient
10/100Base-TX 3.3V ETHERNET TRANSFORMER ISOLATED 0.01µF 0.01µF 5V VCC TXP RXP VCC SCL 3.3k 3.3k 3.3k 3.3k 0V 2V/DIV 0.01µF SDA LTC4310-1 LTC4310-1 SDA1 SDA TXN RXN SDA SDA2 500V/ SCL1 SCL RXP TXP SCL SCL2 20kV/µs DIV EN EN 0V READY 0.01µF READY 431012 TA01b 2µs/DIV GND RXN TXN GND 431012 TA01a EPF8119S 431012fa 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
FeaTures DescripTion
n
Bidirectional I2C Communication Between Two
The LTC®4310 provides bidirectional I2C communications
Isolated Buses
between two I2C buses whose grounds are isolated from n
Full Isolation with Inexpensive Ethernet
one another. Each LTC4310 encodes I2C bus logic states
Transformers or Capacitors
into signals that are transmitted across an isolation barrier n
Low Voltage Level Shifting
to another LTC4310. The receiving LTC4310 decodes the n
I2C Maximum Operating Frequency:
transmission and drives its l2C bus to the appropriate logic
100kHz for LTC4310-1
state. The isolation barrier can be bridged by an inexpensive
400kHz for LTC4310-2
Ethernet, or other transformer, to achieve communications n
I2C Specification Compliant VOL, VIL
across voltage differences reaching thousands of volts, or n ±5kV Human Body Model ESD Protection it can be bridged by capacitors for lower voltage isolation. n Rise Time Accelerators The LTC4310-1 is intended for use in 100kHz I2C systems. n SDA, SCL Hot-Swapping The LTC4310-2 is intended for 400kHz I2C systems. n Very Low Shutdown Current Rise time accelerators provide strong pull-up currents on n Stuck Bus Disconnect and Recovery SCL and SDA rising edges to meet rise time specifications n Thermal Shutdown for heavily loaded systems. Data and clock Hot Swap™ n 10-Lead MSOP and 3mm × 3mm DFN Packages circuitry prevent data corruption when a card is inserted into or removed from a live bus. When a bus is stuck low
applicaTions
for 37ms, the LTC4310 turns off its pull-down devices n Isolated I2C, SMBus and PMBus Interfaces and generates up to sixteen clocks and a STOP bit in an n Isolated Power Supplies attempt to free the bus. Driving EN low sets the LTC4310 n Positive-to-Negative Rail Communications in a very low current shutdown mode to conserve power. n Power-over-Ethernet L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion 1500V Isolated I2C System LTC4310 Operating Through 20kV/µs Common Mode Transient
10/100Base-TX 3.3V ETHERNET TRANSFORMER ISOLATED 0.01µF 0.01µF 5V VCC TXP RXP VCC SCL 3.3k 3.3k 3.3k 3.3k 0V 2V/DIV 0.01µF SDA LTC4310-1 LTC4310-1 SDA1 SDA TXN RXN SDA SDA2 500V/ SCL1 SCL RXP TXP SCL SCL2 20kV/µs DIV EN EN 0V READY 0.01µF READY 431012 TA01b 2µs/DIV GND RXN TXN GND 431012 TA01a EPF8119S 431012fa 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
