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参数资料
| 型号： | LTC4301IDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/12页 |
| 文件大小： | 223K |
| 描述： | IC BUFFER BUS HOTSWAP 2WR 8DFN |
| 标准包装： | 2,500 |
| 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： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 包装： | 带卷 (TR) |
6
LTC4301
4301fb
OPERATIO
There is a finite high to low propagation delay through the
connection circuitry for falling waveforms. Figure 2 shows
the falling edge waveforms for the same pull-up resistors
and equivalent capacitance conditions as used in Figure 1.
An external N-channel MOSFET device pulls down the
voltage on the side with 55pF capacitance; LTC4301 pulls
down the voltage on the opposite side with a delay of 60ns.
This delay is always positive and is a function of supply
voltage, temperature and the pull-up resistors and equiva-
lent bus capacitances on both sides of the bus. The Typical
Performance Characteristics section shows high to low
propagation delay as a function of temperature and volt-
age for 10k pull-up resistors pulled-up to V
CC
and 100pF
equivalent capacitance on both sides of the part. Larger
output capacitances translate to longer delays (up to
150ns). Users must quantify the difference in propagation
times for a rising edge versus a falling edge in their
systems and adjust setup and hold times accordingly.
Figure 2. Input-Output Connection
High to Low Propagation Delay
Ready Digital Output
This pin provides a digital flag which is low when either CS
is high or the start-up sequence described earlier in this
section has not been completed. READY goes high when
CS is low and start-up is complete. The pin is driven by an
open-drain pull-down capable of sinking 3mA while hold-
ing 0.4V on the pin. Connect a resistor of 10k to V
CC
to
provide the pull-up.
Connection Sense
When the CS pin is driven above 1.4V with respect to the
LTC4301s ground, the backplane side is disconnected
from the card side and the READY pin is internally pulled
low. When the pin voltage is low, the part waits for data
transactions on both the backplane and card sides to be
complete (as described in the Start-Up section) before
reconnecting the two sides. At this time the internal
pulldown on READY releases.
4301 F02
INPUT
SIDE
55pF
OUTPUT
SIDE
20pF
1V/DIV
20ns/DIV
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| LTC4301IMS8 | 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 |
| LTC4301IMS8#PBF | 功能描述:IC BUFFER BUS HOTSWAP 2WR 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 |
| LTC4301IMS8#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 |
| LTC4301IMS8#TRPBF | 功能描述:IC BUFFER BUS HOTSWAP 2WR 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 |
| LTC4301LCDD | 功能描述:IC BUFFER BUS HOTSWAP 2WR 8DFN 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 |
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