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參數(shù)資料
| 型號： | ADG3242BRJ-R2 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SW BUS CTRL 2.5/3.3V SOT23-8 |
| 標準包裝： | 1 |
| 類型： | 總線開關(guān) |
| 電路： | 2 x 1:1 |
| 獨立電路： | 1 |
| 電壓電源： | 單電源 |
| 電源電壓： | 2.5V, 3.3V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-8 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-8 |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | ADG3242BRJ-R2CT |
ADG3242
Rev. A | Page 13 of 16
BUS ISOLATION
A common requirement of bus architectures is low capacitance
loading of the bus. Such systems require bus bridge devices that
extend the number of loads on the bus without exceeding the spec-
ifications. Because the ADG3242 is designed specifically for
applications that do not need drive, yet require simple logic func-
tions, it solves this requirement. The device isolates access to
the bus, thus minimizing capacitance loading.
BUS/
BACKPLANE
LOAD A
LOAD C
LOAD B
LOAD D
BUS SWITCH
LOCATION
043
09
-0
34
Figure 35. Location of Bus Switched in a Bus Isolation Application
HOT PLUG AND HOT SWAP ISOLATION
The ADG3242 is suitable for hot swap and hot plug applications.
The output signal of the ADG3242 is limited to a voltage that
Figure 34. Thus, the switch acts like a buffer to take the impact
from the hot insertion, protecting vital and expensive chipsets
from damage.
In hot plug applications, the system cannot be shut down when
new hardware is being added. To overcome this, a bus switch can
be positioned on the backplane between the bus devices and the
hot plug connectors. The bus switch is turned off during hot plug.
Figure 36 shows a typical example of this type of application.
PLUG-IN
CARD (1)
CARD I/O
RAM
BUS
CPU
PLUG-IN
CARD (2)
A
D
G3242
A
D
G32
4
2
0
430
9-
03
5
Figure 36. ADG3242 in a Hot Plug Application
There are many systems, such as docking stations, PCI boards for
servers, and line cards for telecommunications switches, that
require the ability to handle hot swapping. If the bus can be isolated
prior to insertion or removal, there is more control over the hot
swap event. This isolation can be achieved using bus switches. The
bus switches are positioned on the hot swap card between the con-
nector and the devices. During hot swap, the ground pin of the
hot swap card must connect to the ground pin of the backplane
before connecting to any other signal or power pins.
ANALOG SWITCHING
Bus switches are used in many analog switching applications,
for example, video graphics. Bus switches can have lower on
resistance, smaller on and off channel capacitance, and better
frequency performance than their analog counterparts. The
bus switch channel itself, consisting solely of an NMOS switch,
limits the operating voltage (see Figure 4 for a typical plot), but
in many cases, this does not present an issue.
HIGH IMPEDANCE DURING POWER-UP/POWER-
DOWN
To ensure the high impedance state during power-up or power-
down, BE must be tied to VCC through a pull-up resistor. The
minimum value of the resistor is determined by the current sink-
ing capability of the driver.
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PDF描述 |
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| ADG3243BRJ-R2 | IC SW BUS CTRL 2.5/3.3V SOT23-8 |
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| ADG3246BCPZ-REEL7 | IC SW BUS 10BIT 2.5/3.3V 24LFCSP |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADG3242BRJ-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V/3.3 V, 2-Bit Common Control Level Translator Bus Switch |
| ADG3242BRJ-REEL7 | 制造商:Analog Devices 功能描述:Bus Switch 1-Element CMOS 2-IN 8-Pin SOT-23 T/R 制造商:Rochester Electronics LLC 功能描述:2.5/3.3V,2 BIT COMMON CTRL,BUS SWITCH IC - Tape and Reel |
| ADG3242BRJZ | 制造商:Analog Devices 功能描述: |
| ADG3242BRJZ-REEL7 | 功能描述:IC SW BUS CTRL 2.5/3.3V SOT23-8 RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號開關(guān)，多路復(fù)用器，解碼器 系列:- 標準包裝:1 系列:74LVC 類型:解碼器/多路分解器 電路:1 x 2:4 獨立電路:2 輸出電流高，低:24mA，24mA 電壓電源:單電源 電源電壓:1.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SO 包裝:Digi-Reel® 其它名稱:296-28947-6 |
| ADG3243 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V/3.3 V, 2-Bit, Individual Control Level Translator Bus Switch |
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