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参数资料
| 型号： | LTC4310IMS-1#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件页数： | 1/20页 |
| 文件大小： | 231K |
| 代理商： | LTC4310IMS-1#PBF |
LTC4310-1/LTC4310-2
1
431012fa
Typical applicaTion
DescripTion
Hot-Swappable
I2C Isolators
The LTC4310 provides bidirectional I2C communications
between two I2C buses whose grounds are isolated from
one another. Each LTC4310 encodes I2C bus logic states
into signals that are transmitted across an isolation barrier
to another LTC4310. The receiving LTC4310 decodes the
transmission and drives its l2C bus to the appropriate logic
state.Theisolationbarriercanbebridgedbyaninexpensive
Ethernet,orothertransformer,toachievecommunications
across voltage differences reaching thousands of volts, or
it can be bridged by capacitors for lower voltage isolation.
The LTC4310-1 is intended for use in 100kHz I2C systems.
The LTC4310-2 is intended for 400kHz I2C systems.
Rise time accelerators provide strong pull-up currents on
SCL and SDA rising edges to meet rise time specifications
for heavily loaded systems. Data and clock Hot Swap
circuitry prevent data corruption when a card is inserted
into or removed from a live bus. When a bus is stuck low
for 37ms, the LTC4310 turns off its pull-down devices
and generates up to sixteen clocks and a STOP bit in an
attempt to free the bus. Driving EN low sets the LTC4310
in a very low current shutdown mode to conserve power.
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.
1500V Isolated I2C System
FeaTures
applicaTions
n
Bidirectional I2C Communication Between Two
Isolated Buses
n
Full Isolation with Inexpensive Ethernet
Transformers or Capacitors
n
Low Voltage Level Shifting
n
I2C Maximum Operating Frequency:
100kHz for LTC4310-1
400kHz for LTC4310-2
n
I2C Specification Compliant VOL, VIL
n
±5kV Human Body Model ESD Protection
n
Rise Time Accelerators
n
SDA, SCL Hot-Swapping
n
Very Low Shutdown Current
n
Stuck Bus Disconnect and Recovery
n
Thermal Shutdown
n
10-Lead MSOP and 3mm × 3mm DFN Packages
n
Isolated I2C, SMBus and PMBus Interfaces
n
Isolated Power Supplies
n
Positive-to-Negative Rail Communications
n
Power-over-Ethernet
LTC4310 Operating Through
20kV/s Common Mode Transient
RXP
10/100Base-TX
ETHERNET TRANSFORMER
EPF8119S
RXN
TXP
SDA
SCL
EN
TXN GND
READY
0.01F
ISOLATED
5V
3.3V
3.3k
LTC4310-1
VCC
SDA2
SCL2
SDA1
SCL1
0.01F
431012 TA01a
TXP
TXN
RXP
RXN
SDA
SCL
EN
READY
GND
LTC4310-1
VCC
2s/DIV
20kV/s
0V
500V/
DIV
2V/DIV
431012 TA01b
SDA
SCL
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