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参数资料
| 型号： | E819-EDGE819 |
| 英文描述： | Octal 18 V Pin Electronics Driver |
| 中文描述： | 八路18 V引脚电子驱动器 |
| 文件页数： | 6/11页 |
| 文件大小： | 84K |
| 代理商： | E819-EDGE819 |
4
2000 Semtech Corp.
www.semtech.com
HIGH-PERFORMANCE PRODUCTS – ATE
Edge819
PRELIMINARY
Circuit Description
Driver Description
The Edge819 supports programmable high and low levels
and tristate per channel.
There are no shared lines
between any drivers. The EN* and DATA signals are wide
voltage high impedance analog inputs capable of receiving
digital signals over a wide common mode range. VBB is
the high impedance analog input which sets the threshold
for EN* and DATA.
EN*, DATA
Status
> VBB
"1"
< VBB
"0"
With EN* high, the driver goes into a high impedance state.
With EN* low, DATA high forces the driver into a high state,
and DATA low forces the driver into a low state.
EN*
DATA
DOUT
1X
HiZ
01
VH
00
VL
Driver High and Low
VH and VL define the logical "1" and "0" levels of the driver,
and can be adjusted anywhere over the range determined
by VCC and VEE.
There are no restrictions between VH
and VL, other than they must remain within the power
supply levels.
VEE
≤ VH ≤ VCC
VEE
≤ VL ≤ VCC
Driver Output Protection
In a functional testing environment, where a resistor is
added in series with the driver output to create a 50
driver, the Edge819 can withstand a short to any legal
voltage for an indefinite amount of time.
In a low impedance application, with no additional output
resistance, the system should be designed to check for a
short circuit prior to connecting the driver, and tristate the
driver if a short is detected.
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