LTC4303 - 具阻塞总线恢复功能的可热插拔型二线式总线缓冲器

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

典型应用

应用

Hot Board Insertion
Servers
Capacitance Buffer/Bus Extender
RAID Systems

封装信息

**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) *
LTC4303CDD#PBF	3x3 DFN-8	C	$3.07	$2.15
LTC4303CDD#TRPBF	3x3 DFN-8	C		$2.21
LTC4303CMS8#PBF	MS-8	C	$3.00	$2.10
LTC4303CMS8#TRPBF	MS-8	C		$2.16
LTC4303IDD#PBF	3x3 DFN-8	I	$3.70	$2.58
LTC4303IDD#TRPBF	3x3 DFN-8	I		$2.64
LTC4303IMS8#PBF	MS-8	I	$3.61	$2.52
LTC4303IMS8#TRPBF	MS-8	I		$2.58

数据表

LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery

可靠性数据

R410 Reliability Data

产品选择卡