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LTC4301

Features: · Allows Bus Pull-Up Voltages Above or Below VCC· Bidirectional Buffer for SDA and SCL Lines Increases Fanout· Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane· Isolates Input SDA and SCL Line from Output· Compatible with I2CTM, I2C Fast Mode and SMB...

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SeekIC No. : 004402554 Detail

LTC4301: Features: · Allows Bus Pull-Up Voltages Above or Below VCC· Bidirectional Buffer for SDA and SCL Lines Increases Fanout· Prevents SDA and SCL Corruption During Live Board Insertion and Removal from ...

LTC4301 Data Sheet

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Part Number:
LTC4301
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Allows Bus Pull-Up Voltages Above or Below VCC
· Bidirectional Buffer for SDA and SCL Lines
    Increases Fanout
· Prevents SDA and SCL Corruption During Live Board
    Insertion and Removal from Backplane
· Isolates Input SDA and SCL Line from Output
· Compatible with I2CTM, I2C Fast Mode and SMBus
    Standards (Up to 400kHz Operation)
· 1V Precharge On All SDA and SCL Lines
·Supports Clock Stretching, Arbitration and Synchronization
· High Impedance SDA, SCL Pins for VCC = 0V
· CS Gates Connection from Input to Output
· 8kV Human Body Model ESD Protection
· Small 8-Pin MSOP and DD8 (3mm ´ 3mm) Packages


Application

· Hot Board Insertion
· Servers
· Capacitance Buffer/Bus Extender
· Desktop Computers
· CompactPCITM and ATCA Systems


Pinout

Connection Diagram


Specifications

VCC to GND ............................................... 0.3V to 7V
SDAIN, SCLIN, SDAOUT, SCLOUT, CS ........ 0.3V to 7V
READY ....................................................... 0.3V to 6V
Operating Temperature Range
LTC4301C ............................................... 0°C to 70°C
LTC4301I............................................ 40°C to 85°C
Storage Temperature Range
MSOP .............................................. 65°C to 150°C
DFN ................................................. 65°C to 125°C
Lead Temperature (Soldering, 10 sec)............... 300°C


Description

The LTC4301 supply independent, hot swappable, 2-wire bus buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. In addition, the LTC4301 allows the VCC, SDAIN and SCLIN pullup voltage and the SDAOUT and SCLOUT pull-up voltage to be independent from each other. Control circuitry prevents the backplane from being connected to the card until a stop bit or a bus idle is present. When the connection is made, the LTC4301 provides bidirectional buffering, keeping the backplane and card capacitances isolated.

During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances. When driven low, the CS input pin allows the part to connect after a stop bit or bus idle occurs. Driving CS high breaks the connection between SCLIN and SCLOUT and between SDAIN and SDAOUT. The READY output pin of LTC4301 indicates that the backplane and card sides are connected together.

The LTC4301 is offered in 8-pin DFN (3mm ×3mm) and MSOP packages.




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