LTC4303 数据手册-pdf中文资料-产品介绍及应用电路

LTC4303产品信息：

概览

优势和特点
产品详情

优势和特点

Automatic Disconnect of SDA/SCL Lines when Bus is Stuck Low for ≥ 30ms
Recovers Stuck Busses with Automatic Clocking*
Bidirectional Buffer* for SDA and SCL Lines Increases Fanout
Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane
Pin Compatible with LTC4300A-1
±15kV Human Body Model ESD Protection
Isolates Input SDA and SCL Lines from Output
Compatible with I(2)C(TM), I(2)C Fast-Mode and SMBus Standards (Up to 400kHz Operation)
READY Open Drain Output
1V Precharge on All SDA and SCL Lines
High Impedance SDA, SCL Pins for V(CC) = 0V
ENABLE Gates Connection from Input to Output
MSOP 8-Pin and DFN (3mm × 3mm) Packages

产品详情

The LTC( )4303 hot swappable 2-wire Bus Buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. When a connection is made, the LTC4303 provides bidirectional buffering, keeping the backplane and card capacitances isolated. If SDAOUT or SCLOUT is low for ≥ 30ms (typ), the LTC4303 automatically breaks the data and clock bus connection. At this time the LTC4303 automatically generates up to 16 clock pulses on SCLOUT in an attempt to free the bus. A connection will be enabled automatically when the bus becomes free.

Rise-time accelerator circuitry allows the use of larger pull-up resistors while still meeting rise-time requirements. During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances. When driven high, ENABLE allows the LTC4303 to connect after a stop bit or bus idle occurs. Driving ENABLE low breaks the connection between SDAIN and SDAOUT, SCLIN and SCLOUT. READY is an open drain output that indicates when the backplane and card sides are connected together.

*Patent Pending

应用

Hot Board Insertion
Servers
Capacitance Buffer/Bus Extender
RAID Systems

LTC4303: 【用　途】两线总线缓冲器【性能参数】采用MSOP-8和3mmx3mmDFN封装。该器件的SDA和SCL引脚除了方便板卡的带电插入或拔出，还能承受±15kV的ESD。引脚排列图：
凌特推出具有阻塞总线恢复功能的两线总线缓冲器: 凌特公司推出具有阻塞总线恢复功能的两线总线缓冲器 LTC4303 和 LTC4304。通过隔离所有在上行侧的总线连接，这些新的集成电路解决了阻塞总线的共有问题，同时恢复下行总线。
凌特推出具有阻塞总线恢复功能的I2C/SMBus两线总线缓冲器: 凌特公司(Linear Technology)推出具有阻塞总线恢复功能的I2C/SMBus两线总线缓冲器——LTC4303和LTC4304。
凌特I2C/SMBus缓冲器可恢复阻塞总线: p{text-indent=2em}凌特公司(LinearTechnology)日前推出具有阻塞总线恢复功能的I2C/SMBus两线总线缓冲器——LTC4303和LTC4304。

LM75BGD	LM75ADP	LM75AD	LM75BTP	LM75BDP
LM75BD	LPC5536JHI48	LPC5534JHI48	LPC5536JBD64	LPC5536JBD100
LPC5534JBD64	LPC5534JBD100	LPC51U68JBD64	LPC51U68JBD48	LPC55S69JEV98
LPC55S69JBD64	LPC55S69JBD100	LPC55S66JEV98	LPC55S66JBD64	LPC55S66JBD100

LTC4303

LTC4303产品信息：

概览

优势和特点

产品详情

LTC4303数据手册：

LTC4303引脚功能、电路图：

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