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參數(shù)資料
| 型號： | EVM649EVM |
| 廠商： | Semtech Corporation |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大?。?/td> | 100K |
| 代理商： | EVM649EVM |
5
2000 Semtech Corp.
www.semtech.com
EDGE HIGH-PERFORMANCE PRODUCTS
Circuit Description
(continued)
Edge649
Driver Output Protection
In a functional testing environment, where a resistor is
added in series with the driver output, the Edge649 can
withstand a short to any legal DUT voltage for an indefinite
amount of time.
In a low impedance application with no additional output
series resistance, care must be exercised and systems
should be designed to check for this condition and tristate
the driver if a short is detected.
Receiver Functionality
Edge649 supports programmable thresholds per
channel. There are no shared lines between comparators.
THRESHOLD is a high input impedance analog input
which defines a logical
“
1
”
and
“
0
”
at the DUT (see
Figure 4). If the DUT voltage is more positive than
THRESHOLD, DATA OUT will be high. With DUT lower
than THRESHOLD, DATA OUT will be low.
Figure 4. Receiver Functionality
DATA OUT
DUT
DUT
THRESHOLD
THRESHOLD
DATA OUT
Tpd
–
+
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