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參數(shù)資料
| 型號： | LTC4300A-1 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Hot Swappable 2-Wire Bus Buffers |
| 中文描述： | 熱插拔2線總線緩沖器 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 291K |
| 代理商： | LTC4300A-1 |
LTC4300A-1/LTC4300A-2
10
sn4300a12 4300a12fs
Resistor Pull-Up Value Selection
The system pull-up resistors must be strong enough to
provide a positive slew rate of 1.25V/
μ
s on the SDA and
SCL pins, in order to activate the boost pull-up currents
during rising edges. Choose maximum resistor value R
using the formula:
R
≤
(V
CC(MIN)
– 0.6) (800,000) / C
where R is the pull-up resistor value in ohms, V
CC(MIN)
is
the minimum V
CC
voltage and C is the equivalent bus
capacitance in picofarads (pF).
APPLICATIU
W
U
U
In addition, regardless of the bus capacitance, always
choose R
≤
16k for V
CC
= 5.5V maximum, R
≤
24k for
V
CC
=3.6V maximum. The start-up circuitry requires logic
high voltages on SDAOUT and SCLOUT to connect the
backplane to the card, and these pull-up values are needed
to overcome the precharge voltage.
Live Insertion and Capacitance Buffering Application
Figures 3 through 6 illustrate the usage of the LTC4300A
in applications that take advantage of both its hot swap
controlling and capacitance buffering features. In all of
Figure 3. Inserting Multiple I/O Cards into a Live Backplane Using the LTC4300A-1 in a CompactPCI System
S
R13
10k
R12
10k
R14
10k
I/O PERIPHERAL CARD N
ENABLE
SDAIN
SCLIN
U3
LTC4300A-1
V
CC
GND
CARDN_SCL
CARDN_SDA
SDAOUT
SCLOUT
READY
ENABLE
SDAIN
SCLIN
V
CC
GND
SDAOUT
SCLOUT
READY
ENABLE
CARD
ENABLE/DISABLE
SDAIN
SCLIN
V
CC
GND
SDAOUT
SCLOUT
READY
4300A-1/2 F03
R9
10k
R8
10k
R10
10k
I/O PERIPHERAL CARD 2
U2
LTC4300A-1
CARD2_SCL
CARD2_SDA
S
S
R5
10k
R4
10k
R6
10k
I/O PERIPHERAL CARD 1
U1
LTC4300A-1
CARD_SCL
CARD_SDA
R1
10k
V
CC
R2
10k
BACKPLANE
BACKPLANE
CONNECTOR
SDA
BD_SEL
SCL
C1
0.01
μ
F
R3
10k
R7
10k
R11
10k
C3
0.01
μ
F
C5
0.01
μ
F
POWER SUPPLY
HOT SWAP
POWER SUPPLY
HOT SWAP
POWER SUPPLY
HOT SWAP
CARD
ENABLE/DISABLE
CARD
ENABLE/DISABLE
相關PDF資料 |
PDF描述 |
|---|---|
| LTC4300A-1CMS8 | Hot Swappable 2-Wire Bus Buffers |
| LTC4300A-1IMS8 | Hot Swappable 2-Wire Bus Buffers |
| LTC4300A-2 | 14/PG/CL/N FLNG |
| LTC4300A-2CMS8 | Hot Swappable 2-Wire Bus Buffers |
| LTC4300A-2IMS8 | Hot Swappable 2-Wire Bus Buffers |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4300A-1CMS8 | 功能描述:IC BUFFER BUS 2WR HOTSWAP 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關:無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
| LTC4300A-1CMS8#PBF | 功能描述:IC BUFFER BUS 2WR HOTSWAP 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關:無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
| LTC4300A-1CMS8#PBF | 制造商:Linear Technology 功能描述:Bus Buffer IC |
| LTC4300A1CMS8#TR | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 5.5V 8-Pin MSOP T/R |
| LTC4300A-1CMS8#TR | 功能描述:IC BUFFER BUS 2WR HOTSWAP 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關:無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
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