- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄97873 > E649-EDGE649 Octal Pin Electronics Driver / Receiver PDF資料下載
參數(shù)資料
| 型號： | E649-EDGE649 |
| 英文描述： | Octal Pin Electronics Driver / Receiver |
| 中文描述： | 八路引腳電子驅(qū)動器/接收器 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大小： | 150K |
| 代理商： | E649-EDGE649 |
7
Revision 5 / October 21, 2002
www .semtech.com
TEST AND MEASUREMENT PRODUCTS
Edge649
Application Infor mation
(continued)
Window Comparator
Certain applications require a dual threshold window
comparator to distinguish between the DUT being high,
low, or floating. To support this application, two Edge649
channels can be combined to create one channel with a
window comparator (see Figure 7).
Notice that
connecting two DUT pins ties together the positive inputs
of both receivers. The result is a difference in polarity
between the digital outputs reporting the high and low
status of the DUT.
Figure 7. Edge649 as a
Window Comparator
Once two receiver s are connected as window
comparators, the two drivers also get connected in
parallel.
This dual driver configuration supports a
multitude of applications that have traditionally been
difficult to accommodate.
Trinary Driver
At times, there is a need for a three-level driver. Typically,
two levels are required for the standard digital “1” and
“0” pattern generation. The third level provides a higher
voltage to place the device under test (DUT) into a
programming or test mode. By controlling the DATA IN
and DVR EN* inputs, a trinary driver with tristate is
realizable (see Figure 8).
Driver with Pull Up/Pull Down
As the drivers are unbuffered, paralleling two drivers for
one DUT node provides a means for adding pull up or
pull down capability. By connecting the VHIGH and VLOW
inputs of one driver through a resistor to a voltage,
additional functionality that would normally require an
external relay on the DUT transmission line to engage
and disengage these functions is realizable.
One common application for the pull up feature is testing
open collector devices. The pull down satisfies open
emitter DUTs (typically ECL). Either the pull up or down
could be used to establish a default high impedance
voltage on a bidirectional bus. Notice that in all
applications, the resistors can be switched dynamically
or statically.
Figure 8. Trinary Driver
DUT
High Threshold
Low Threshold
DUT LOW*
DUT HIGH
–
+
–
+
DUT
DATA IN A
DVR EN*A
DATA IN B
DVR EN*B
VHIGH A
VHIGH B
VLOW A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| E670-EDGE670 | 500 MHz Window Comparator |
| E672-EDGE672 | 500 MHz Pin Electronics Window Comparator and Load |
| E692-EDGE692 | 200 MHz Monolithic Dual Pin Electronics Driver |
| E693-EDGE693 | 500 MHz Monolithic Dual Pin Electronics Driver |
| E710-EDGE710 | 500 MHz Pin Electronics Driver. Window Comparator. and Load |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| E-64-C | 功能描述:TOUCHSCREEN 6.4" RS-232 RoHS:是 類別:光電元件 >> 觸摸屏覆蓋層 系列:E 標(biāo)準(zhǔn)包裝:25 系列:- 長度:15" (381mm) 寬:0.13"（3.18mm） 高度:12.03"（305.6mm） 接口:需要控制器 類型:電阻 屏幕對角尺寸:19.2"（487.68mm） 相關(guān)產(chǎn)品:BER244-ND - POWER SUPPLY FOR TOUCH SCRN MODBER243-ND - CABLE USB FOR TOUCH SCREEN MODBER242-ND - CABLE RS232 FOR TOUCH SCREEN MODBER241-ND - CONTROLLER TOUCH SCRN USB RS232 其它名稱:BER240 |
| E64CAT2T | 制造商:Eaton Corporation 功能描述:SELF CONTAINED PHOTOELECT VEND |
| E64CAT5T | 制造商:Eaton Corporation 功能描述:PHOTO SENSOR POLARIZED REFLEX TIME DELAY |
| E64KR54 | 制造商:Eaton Corporation 功能描述:RECTANGULAR REFLECTOR |
| E-64-U | 功能描述:TOUCHSCREEN 6.4" USB RoHS:是 類別:光電元件 >> 觸摸屏覆蓋層 系列:E 標(biāo)準(zhǔn)包裝:25 系列:- 長度:15" (381mm) 寬:0.13"（3.18mm） 高度:12.03"（305.6mm） 接口:需要控制器 類型:電阻 屏幕對角尺寸:19.2"（487.68mm） 相關(guān)產(chǎn)品:BER244-ND - POWER SUPPLY FOR TOUCH SCRN MODBER243-ND - CABLE USB FOR TOUCH SCREEN MODBER242-ND - CABLE RS232 FOR TOUCH SCREEN MODBER241-ND - CONTROLLER TOUCH SCRN USB RS232 其它名稱:BER240 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。