- 您现在的位置：买卖IC网 > PDF目录97873 > E749-EDGE749 Octal Pin Electronics Driver / Receiver PDF资料下载
参数资料
| 型号： | E749-EDGE749 |
| 英文描述： | Octal Pin Electronics Driver / Receiver |
| 中文描述： | 八路引脚电子驱动器/接收器 |
| 文件页数： | 13/15页 |
| 文件大小： | 152K |
| 代理商： | E749-EDGE749 |
7
Revision 3 / October 21, 2002
www .semtech.com
TEST AND MEASUREMENT PRODUCTS
Edge749
Application Information (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 Edge749
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. Edge749 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
相关PDF资料 |
PDF描述 |
|---|---|
| E818-EDGE818 | Octal 18 V Pin Electronics Driver / Window Comparator |
| E819-EDGE819 | Octal 18 V Pin Electronics Driver |
| E82802AB | |
| E82802AC | |
| E846-EDGE846 | Pin Electronics Driver. Window Comparator. and Switch Matrix |
相关代理商/技术参数 |
参数描述 |
|---|---|
| E74D100LPN163MA54N | 制造商:United Chemi-Con Inc 功能描述:CAP ALUM 16000UF 10V SCREW 制造商:United Chemi-Con Inc 功能描述:16000uF 10 Volt 制造商:UNITED CHEMI-CON INC. 功能描述:SERIES: 747D; VOLT: 10; CAP: 16000; DIA X LENGTH: 35X54; PACKAGING: LG |
| E74D100LPN183MA41M | 制造商:United Chemi-Con Inc 功能描述:CAP ALUM 18000UF 10V SCREW 制造商:United Chemi-Con Inc 功能描述:18000uF 10 Volt 制造商:UNITED CHEMI-CON INC. 功能描述:SERIES: 747D; VOLT: 10; CAP: 18000; DIA X LENGTH: 34X41; PACKAGING: LG |
| E74D100LPN254MCE3N | 制造商:United Chemi-Con Inc 功能描述:CAP ALUM 250000UF 10V SCREW 制造商:United Chemi-Con Inc 功能描述:250000uF 10 Volt 制造商:UNITED CHEMI-CON INC. 功能描述:SERIES: 747D; VOLT: 10; CAP: 250000; DIA X LENGTH: 50X143; PACKAGING: LG |
| E74D160LPN163MA48M | 制造商:United Chemi-Con Inc 功能描述:CAP ALUM 16000UF 16V SCREW 制造商:United Chemi-Con Inc 功能描述:16000uF 16 Volt 制造商:UNITED CHEMI-CON INC. 功能描述:SERIES: 747D; VOLT: 16; CAP: 16000; DIA X LENGTH: 34X47; PACKAGING: LG |
| E74D160LPN383MA80N | 制造商:United Chemi-Con Inc 功能描述:CAP ALUM 38000UF 16V SCREW 制造商:United Chemi-Con Inc 功能描述:38000uF 16 Volt 制造商:UNITED CHEMI-CON INC. 功能描述:SERIES: 747D; VOLT: 16; CAP: 38000; DIA X LENGTH: 35X79; PACKAGING: LG |
发布紧急采购，3分钟左右您将得到回复。