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LTC4300-2 Datasheet

LTC4300-2 Datasheet

Hot Swappable 2-Wire Bus Buffers
Part No.: LTC4300-2
Page: 18 Pages
Size: 713 KB
Manufacturer: Linear Technology
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Update Time: 2024-12-17 20:49:16
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LTC4300-2 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC4300-2CMS8#PBF Tube 50 LTVJ 1 8 0°C ~ 70°C 8-Lead Plastic MSOP  
LTC4300-2CMS8#TRPBF Reel 2500 LTVJ 1 8 0°C ~ 70°C 8-Lead Plastic MSOP  
LTC4300-2IMS8#PBF Tube 50 LTVK 1 8 -40°C ~ 85°C 8-Lead Plastic MSOP  
LTC4300-2IMS8#TRPBF Reel 2500 LTVK 1 8 -40°C ~ 85°C 8-Lead Plastic MSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC4300-2 Datasheet(PDF)

LTC4300-2 Datasheet(Picture)

LTC4300-2 Features

  • 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 Lines from Output
  • Compatible with I2C, I2C Fast Mode and SMBus Standards (Up to 400kHz Operation)
  • Low ICC Chip Disable:
  • 1V Precharge on all SDA and SCL Lines
  • Supports Clock Stretching, Arbitration and Synchronization
  • 5V to 3.3V Level Translation (LTC4300-2)
  • High Impedance SDA, SCL Pins for VCC = 0V
  • Small MSOP 8-Pin Package

LTC4300-2 Applications

  • Hot Board Insertion
  • Servers
  • Capacitance Buffer/Bus Extender
  • Desktop Computer

LTC4300-2 Description

The LTC4300 series hot swappable 2-wire bus buffers allow I/O card insertion into a live backplane without corruption of the data and clock busses. When the connection is made, the LTC4300-2 provide bidirectional buffering, keeping the backplane and card capacitances isolated. Rise-time accelerator circuitry* allows the use of weaker DC pull-up currents while still meeting rise-time requirements. During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances.

The LTC4300-2 replaces the ENABLE pin with a dedicated supply voltage pin, VCC2, for the card side, providing level shifting between 3.3V and 5V systems. Both the backplane and card may be powered with supply voltages ranging from 2.7V to 5.5V, with no contraints on which supply voltage is higher. The LTC4300-2 also replaces the READY pin with a digital CMOS input pin, ACC, which enables and disables the rise-time accelerator currents.

The LTC4300 is available in a small 8-pin MSOP package.

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