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参数资料
| 型号： | LTC4300-2CMS8 |
| 厂商： | Linear Technology |
| 文件页数： | 1/18页 |
| 文件大小： | 735K |
| 描述： | IC HOT SWAP 2WIRE BUS BUFR MSOP8 |
| 标准包装： | 50 |
| 类型： | 热交换开关 |
| 应用： | 通用型缓冲器/总线扩展器 |
| 内部开关： | 是 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 其它名称： | Q1354742 |
LTC4300-1/LTC4300-2
1
430012fb
For more information www.linear.com/LTC4300-1
Typical applicaTion
FeaTures
DescripTion
Hot Swappable
2-Wire Bus Buffers
The LTC
?/DIV>
4300 series hot swappable 2-wire bus buffers
allow I/O card insertion into a live backplane without cor-
ruption of the data and clock busses. When the connection
is made, the LTC4300-1/LTC4300-2 provide bidirectional
buffering, keeping the backplane and card capacitances
isolated. Rise time accelerator circuitry* allows the use of
weaker DC pull-up currents while still meeting rise time
requirements. During insertion, the SDA and SCL lines are
precharged to 1V to minimize bus disturbances.
The LTC4300-1 incorporates a CMOS threshold digital
ENABLE input pin, which forces the part into a low current
mode when driven to ground and sets normal operation
when driven to V
CC
. It also includes an open drain READY
output pin, which indicates that the backplane and card
sides are connected together. The LTC4300-2 replaces
the ENABLE pin with a dedicated supply voltage pin, V
CC2
,
for the card side, providing level shifting between 3.3V
and 5V systems. Both the backplane and card may be
powered with supply voltages ranging from 2.7V to 5.5V,
with no constraints on which supply voltage is higher.
The LTC4300-2 also replaces the READY pin with a digital
CMOS input pin, ACC, which enables and disables the rise
time accelerator currents.
The LTC4300 is available in a small 8-lead MSOP package.
InputOutput Connection t
PLH
applicaTions
n
Bidirectional Buffer for SDA and SCL Lines
Increases Fanout
n
Prevents SDA and SCL Corruption During Live
Board Insertion and Removal From Backplane
n
Isolates Input SDA and SCL Lines From Output
n
Compatible with I
2
C, I
2
C Fast Mode and SMBus
Standards (Up to 400kHz Operation)
n
Low I
CC
Chip Disable: <1礎 (LTC4300-1)
n
READY Open-Drain Output (LTC4300-1)
n
1V Precharge on All SDA and SCL Lines
n
Supports Clock Stretching, Arbitration and
Synchronization
n
5V to 3.3V Level Translation (LTC4300-2)
n
High Impedance SDA, SCL Pins for V
CC
= 0V
n
Small MSOP 8-Lead Package
n
Hot Board Insertion
n
Servers
n
Capacitance Buffer/Bus Extender
n
Desktop Computer
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Hot Swap and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners. *Protected by U.S. Patents, including 6650174.
R1
24k
V
CC
3.3V
R2
24k
ENABLE
SCLIN
SCLOUT
SDAIN
SDAOUT
1
5
4
6
7
3
2
8
GND
LTC4300-1
READY
C1
0.01礔
C2*
C4*
C5*
C3*
430012 TA01a
R3
24k
R4
24k
*CAPACITORS NOT REQUIRED
IF BUS IS SUFFICIENTLY LOADED
OUTPUT SIDE
50pF
0.5V/DIV
430012 TA01b
INPUT SIDE
150pF
200ns/DIV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4300-2CMS8#PBF | 功能描述:IC HOTSWAP 2WIRE BUS BUFFR 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4300-2CMS8#TR | 功能描述:IC BUFFER BUS HOTSWAP 2WR 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4300-2CMS8#TRPBF | 功能描述:IC HOTSWAP 2WIRE BUS BUFFR 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4300-2IMS8 | 功能描述:IC BUFFER BUS HOTSWAP 2WR 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4300-2IMS8#PBF | 功能描述:IC HOTSWAP 2WIRE BUS BUFFR 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
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