LTC4301L - Hot Swappable 2-Wire Bus Buffer with Low Voltage Level Translation

The LTC®4301L 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 LTC4301L SDAIN and SCLIN pins are compatible with systems with pull-up voltages as low as 1V. 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 LTC4301L provides bidirectional buffering, keeping the backplane and card capacitances isolated.

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. A logic high on READY indicates that the backplane and card sides are connected together.

The LTC4301L is offered in 8-pin DFN (3mm x 3mm) and MSOP packages.

I²C is a trademark of Philips Electronics N.V.

*Patent Pending

特点
  • Level Translates 1V Signals to Standard 3.3V and 5V Logic Rails
  • Allows Bus Pull-Up Voltages as Low as 1V on SDAIN and SCLIN
  • 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
  • 10kV Human Body Model ESD Protection
  • Supports Clock Stretching, Arbitration and Synchronization
  • High Impedance SDA, SCL Pins for VCC = 0V
  • CS Gates Connection from Input to Output
  • Compatible with I²C™, I²C Fast Mode and SMBus Standards (Up to 400kHz Operation)
  • Small 8-Pin MSOP and DFN (3mm x 3mm) Packages
典型应用
LTC4301L Typical Application
LTC4301L Typical Application
应用
  • Hot Board Insertion
  • Servers
  • Capacitance Buffer/Bus Extender
  • Desktop Computers
封装信息
LTC4301L Package Drawing
LTC4301L Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LTC4301LCDD#PBF3x3 DFN-8C$3.04$2.15
LTC4301LCDD#TRPBF3x3 DFN-8C$2.21
LTC4301LCMS8#PBFMS-8C$2.86$2.05
LTC4301LCMS8#TRPBFMS-8C$2.11
LTC4301LIDD#PBF3x3 DFN-8I$3.48$2.45
LTC4301LIDD#TRPBF3x3 DFN-8I$2.51
LTC4301LIMS8#PBFMS-8I$3.30$2.35
LTC4301LIMS8#TRPBFMS-8I$2.41
数据表
可靠性数据
产品选择卡
软件和仿真
CAD 符号
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LTC4301L - Hot Swappable 2-Wire Bus Buffer with Low Voltage Level Translation
R413 Reliability Data
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I2C Quick Guide
LTC4301L IBIS Model
LTC4301L Footprints and Symbols