同类型推荐

概览

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 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

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

产品生命周期 icon-recommended 量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计,但也可能有更新的替代产品。

工具及仿真模型

IBIS模型

配套产品推荐

LTC4303 配套产品

推荐 µModule Isolator

推荐 相关器件

设计资源

ADI始终把满足您可靠性水平的产品放在首要位置。我们通过在所有产品、工艺设计和制造过程中引入高质量和可靠性检查实践这一承诺。发运的产品实现“零缺陷”始终是我们的目标。

PCN-PDN信息

样片申请及购买

在线购买:
以上所列报价单仅供人民币结算及大陆购买使用, ADI均提供正规发票,如需美金结算及其他地区购买请直接跳转至英文页面进行购买。

所有库存均为仓库现货,可点击“加入购物车”按钮进行购买。登录您的myAnalog账号可以在您的购物车中查询到购买详情。如果您还没有myAnalog账号,您可先创建一个新的账号再进行购买。如果您有任何关于在线购买的问题,请联系CNStore@analog.com。

样片申请:
选择上方“样片申请”按钮将指向ADI授权第三方网站进行样片申请。登录您的myAnalog账号可以在您的购物车中查询到样片申请详情。如果您还没有myAnalog账号,请先创建一个新账号。有关样片申请的任何问题,请联系SampleSupport@analog.com。


价格表帮助