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LTC4303 - 典型应用图例：
LTC4303典型应用图例一
LTC4303典型应用图例二
LTC4303 - 封装图解：
LTC4303封装图解一
LTC4303封装图解二
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LINEAR产品 - LTC4303介绍

LTC4303 - LTC4303是具阻塞总线恢复功能的可热插拔型二线式总线缓冲器

LTC4303是LINEAR凌力尔特公司的一款I2C 和 SMBus 总线缓冲器和加速器产品，LTC4303是LTC4303是具阻塞总线恢复功能的可热插拔型二线式总线缓冲器，本站介绍了LTC4303的封装应用图解、特点和优点、功能等，并给出了与LTC4303相关的LINEAR元器件型号供参考。

LTC4303 - LTC4303是具阻塞总线恢复功能的可热插拔型二线式总线缓冲器 - I2C 和 SMBus 总线缓冲器和加速器 - 接口器件 - 凌力尔特

LTC4303 - 具阻塞总线恢复功能的可热插拔型二线式总线缓冲器

LTC4303 - 具阻塞总线恢复功能的可热插拔型二线式总线缓冲器 - Linear Technology（凌力尔特）

功能描述
The LTC4303 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

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 I2CTM, I2C 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 VCC = 0V
  • ENABLE Gates Connection from Input to Output
  • MSOP 8-Pin and DFN (3mm × 3mm) Packages
    • 应用
  • Hot Board Insertion
  • Servers
  • Capacitance Buffer/Bus Extender
  • RAID Systems
    • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
    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)
    LTC4303CDD 3x3 DFN-8 C $3.07 $2.15
    LTC4303CDD#PBF 3x3 DFN-8 C $3.07 $2.15
    LTC4303CDD#TRPBF 3x3 DFN-8 C $2.21
    LTC4303CMS8 MS-8 C $3.00 $2.10
    LTC4303CMS8#PBF MS-8 C $3.00 $2.10
    LTC4303CMS8#TR MS-8 C $2.16
    LTC4303CMS8#TRPBF MS-8 C $2.16
    LTC4303IDD 3x3 DFN-8 I $3.70 $2.58
    LTC4303IDD#PBF 3x3 DFN-8 I $3.70 $2.58
    LTC4303IDD#TR 3x3 DFN-8 I $2.64
    LTC4303IDD#TRPBF 3x3 DFN-8 I $2.64
    LTC4303IMS8 MS-8 I $3.61 $2.52
    LTC4303IMS8#PBF MS-8 I $3.61 $2.52
    LTC4303IMS8#TR MS-8 I $2.58
    LTC4303IMS8#TRPBF MS-8 I $2.58
    下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
  • LTC4310-1 / LTC4310-2 - 可热插拔的 I2C 隔离器
  • LTC4313-1 / LTC4313-2 / LTC4313-3 - 具高噪声裕度的二线式总线缓冲器
  • LTM2883 - 具可调 ±12.5V 和 5V 稳定电源的 SPI / 数字或 I2C μModule 隔离器
  • LTC4301 - 与电源无关的可热插拨型双线式总线缓冲器
  • LTC4315 - 具高噪声裕度的二线式总线缓冲器
  • LTC4311 - 低电压 I2C/SMBus 加速器
  • LTM2881 - 完整的隔离型 RS485 / RS422 μModule 收发器和电源
  • LT4363 - 具电流限制功能的高电压浪涌抑制器
  • LTC4307 - Low Offset Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
  • LTC4312 - 具总线缓冲器的引脚可选、两通道、二线式多路复用器
    • 下面可能是您感兴趣的凌力尔特公司I2C 和 SMBus 总线缓冲器和加速器元器件
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