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參數資料
| 型號： | ADG3241 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 |
| 中文描述： | 2.5 V/3.3五，1位，2端口電平轉換總線開關采用SOT - 66 |
| 文件頁數： | 10/12頁 |
| 文件大小： | 213K |
| 代理商： | ADG3241 |
REV. A
–10–
ADG3241
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
specifications. Because the ADG3241 is designed specifically for
applications that do not need drive yet require simple logic
functions, 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
Figure 11. Location of Bus Switched in a Bus
Isolation Application
Hot Plug and Hot Swap Isolation
The ADG3241 is suitable for hot swap and hot plug applications.
The output signal of the ADG3241 is limited to a voltage that is
below the V
CC
supply, as shown in Figures 6, 8, and 10. Therefore
the switch acts like a buffer to take the impact from 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 12 shows a typical example of this type of application.
PLUG-IN
CARD (1)
CARD I/O
CARD I/O
RAM
CPU
PLUG-IN
CARD (2)
A
A
Figure 12. ADG3241 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 connector and the devices. During hot swap, the
ground pin of the hot swap card must connect to the ground pin
of the backplane before any other signal or power pins.
Analog Switching
Bus switches can be used in many analog switching applications,
for example, video graphics. Bus switches can have lower on
resistance, smaller ON and OFF channel capacitance, and thus
improved frequency performance than their analog counterparts.
The bus switch channel itself, consisting solely of an NMOS
switch, limits the operating voltage (see TPC 1 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
should be tied to V
CC
through a pull-up resistor; the
minimum value of the resistor is determined by the current-
sinking capability of the driver.
相關PDF資料 |
PDF描述 |
|---|---|
| ADG3241BKS-500RL7 | 2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 |
| ADG3241BKS-REEL | 2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 |
| ADG3241BKS-REEL7 | 2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 |
| ADG3241BRY-REEL7 | 2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 |
| ADG3245 | 2.5 V/3.3 V, 8-Bit, 2-Port Level Translating, Bus Switch |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADG3241BKS | 制造商:Analog Devices 功能描述:- Tape and Reel |
| ADG3241BKS-500RL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 |
| ADG3241BKS-REEL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADG3241BKS-REEL7 | 制造商:Analog Devices 功能描述:Bus Switch 1-Element CMOS 1-IN 6-Pin SC-70 T/R 制造商:Rochester Electronics LLC 功能描述:2.5/3.3V,1BIT,2 PORT, BUS SWITCH IC. - Tape and Reel |
| ADG3241BKSZ-500RL7 | 功能描述:IC SW BUS 2.5-3.3V 1BIT SC70-6 RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號開關，多路復用器，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） 供應商設備封裝:16-SO 包裝:Digi-Reel® 其它名稱:296-28947-6 |
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