同类型推荐
概览
优势和特点
- Bidirectional Buffer with Stuck Bus Recovery
- 60mV Buffer Offset Independent of Load
- 30ms Stuck Bus Timeout
- Compatible with Non-Compliant VOL I2C Devices
- Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane
- ±5kV Human Body Model ESD Protection
- Isolates Input SDA and SCL Line from Output
- Compatible with I2CTM, I2C Fast Mode and SMBus
- READY Open-Drain Output
- 1V Precharge on All SDA and SCL Lines
- High Impedance SDA, SCL Pins for VCC = 0V
- Small 8-Lead (3mm × 3mm) DFN and 8-Lead MSOP Packages
产品详情
The LTC4307 hot swappable, 2-wire bus buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. The LTC4307 provides bidirectional buffering, keeping the backplane and card capacitances isolated. Low offset and high VOL tolerance allows multiple devices to be cascaded on the clock and data busses. If SDAOUT or SCLOUT are low for 30ms, the LTC4307 will automatically break the bus connection. At this time the LTC4307 automatically generates up to 16 clock pulses on SCLOUT in an attempt to free the bus. A connection will resume if the stuck bus is cleared.
During insertion, the SDA and SCL lines are pre-charged to 1V to minimize bus disturbances. When driven high, the ENABLE input allows the LTC4307 to connect after a stop bit or bus idle. Driving ENABLE low breaks the connection between SDAIN and SDAOUT, SCLIN and SCLOUT. READY is an open-drain output which indicates that the backplane and card sides are connected.
应用
- Live Board Insertion
- Servers
- Capacitance Buffer/Bus Extender
- RAID Systems
- ATCA
产品分类
产品生命周期
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。
参考资料
-
R527 Reliability Data3/26/2018
-
数字隔离器产品选型与资源指南2/7/2020
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Serial Bus Buffers, Extenders, and Accelerators7/13/2017
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I2C Quick Guide7/13/2017
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保护您的创新：从高精度到高电压10/24/2022
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Bus Buffers Simplify Design of Large, Noisy I2C Systems1/1/2013 LT Journal
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Low Offset 2-Wire Bus Buffer Provides Capacitance Buffering, Stuck Bus Recovery, and Tolerates High VOL11/1/2007 LT Journal
工具及仿真模型
IBIS模型
IBS
LTC4307 IBIS Model
135.7 K
配套产品推荐
LTC4307 配套产品
设计资源
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| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC4307CDD#PBF | 材料声明 | 质量和可靠性 | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC4307CDD#TRPBF | 材料声明 | 质量和可靠性 | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC4307CMS8#PBF | 材料声明 | 质量和可靠性 | 8-Lead MSOP | |
| LTC4307CMS8#TRPBF | 材料声明 | 质量和可靠性 | 8-Lead MSOP | |
| LTC4307IDD#PBF | 材料声明 | 质量和可靠性 | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC4307IDD#TRPBF | 材料声明 | 质量和可靠性 | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC4307IMS8#3ZZPBF | 材料声明 | 质量和可靠性 | 8-Lead MSOP | |
| LTC4307IMS8#3ZZTRPBF | 材料声明 | 质量和可靠性 | 8-Lead MSOP | |
| LTC4307IMS8#PBF | 材料声明 | 质量和可靠性 | 8-Lead MSOP | |
| LTC4307IMS8#TRPBF | 材料声明 | 质量和可靠性 | 8-Lead MSOP | |
| Wafer Fabrication Data | R527 Reliability Data |
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