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參數(shù)資料
| 型號： | LTC4300A-2 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 14/PG/CL/N FLNG |
| 中文描述： | 熱插拔2線總線緩沖器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 291K |
| 代理商： | LTC4300A-2 |
LTC4300A-1/LTC4300A-2
12
sn4300a12 4300a12fs
APPLICATIU
W
U
U
of the connector and the LTC4300A-2, as shown in the
figure. In addition, make sure that the V
CC
bypassing on
the backplane is large compared to the 0.01
μ
F bypass
capacitor on the card. Establishing early power V
CC
en-
sures that the 1V precharge voltage is present at the
SDAIN and SCLIN pins before they make contact. Connect
V
CC2
to the output of one of the CompactPCI power supply
Hot Swap circuits. V
CC2
is monitored by a filtered UVLO
circuit. With the V
CC2
voltage powering up after all other
pins have established connection, the UVLO circuit en-
sures that the backplane and card data and clock busses
are not connected until the transients associated with live
insertion have settled.
Figure 5 shows the LTC4300A-1 in a PCI application,
where all of the pins have the same length. In this case,
connect an RC series circuit on the I/O card between V
CC
and ENABLE. An RC product of 10ms provides a filter to
prevent the LTC4300A-1 from becoming activated until
the transients associated with live insertion have settled.
Figure 5. Inserting Multiple I/O Cards into a Live Backplane Using the LTC4300A-1 in a PCI System
Figure 6 shows the LTC4300A-2 in an application where
the user has a custom connector with pins of three
different lengths available. Making V
CC2
the shortest pin
ensures that all other pins are firmly connected before
V
CC2
receives any voltage. A filtered UVLO circuit on V
CC2
ensures that the V
CC2
pin is firmly connected before the
LTC4300A-2 connects the backplane to the card.
Repeater/Bus Extender Application
Users who wish to connect two 2-wire systems sepa-
rated by a distance can do so by connecting two
LTC4300A-1s back-to-back, as shown in Figure 7. The
I
2
C specification allows for 400pF maximum bus capaci-
tance, severely limiting the length of the bus. The SMBus
specification places no restriction on bus capacitance,
but the limited impedances of devices connected to the
bus require systems to remain small if rise- and fall-time
specifications are to be met. The strong pull-up and pull-
down impedances of the LTC4300A-1 are capable of
R3
100k
ENABLE
SDAIN
SCLIN
V
CC
GND
SDAOUT
SCLOUT
READY
ENABLE
SDAIN
SCLIN
V
CC
GND
SDAOUT
SCLOUT
READY
4300A-1/2 F05
R9
10k
R8
10k
R10
10k
I/O PERIPHERAL CARD 2
U2
LTC4300A-1
CARD2_SCL
CARD2_SDA
R5
10k
R4
10k
I/O PERIPHERAL CARD 1
U1
LTC4300A-1
C2 0.1
μ
F
R7
100k
C4 0.1
μ
F
CARD_SCL
CARD_SDA
R1
10k
V
CC
R2
10k
BACKPLANE
BACKPLANE
CONNECTOR
SDA
SCL
C1
0.01
μ
F
C3
0.01
μ
F
R6
10k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4300A2CMS8 | 制造商:Linear Technology 功能描述: |
| LTC4300A-2CMS8 | 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(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| LTC4300A-2CMS8#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(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| LTC4300A-2CMS8#PBF | 制造商:Linear Technology 功能描述:HOT SWAP CONTROLLER, 2.7-5.5V, MSOP-8 |
| LTC4300A-2CMS8#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(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
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