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ELM410P PDF预览

ELM410P

更新时间: 2024-10-30 04:17:19
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ELM /
页数 文件大小 规格书
4页 28K
描述
Triple Debounce Circuit

ELM410P 数据手册

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ELM410  
Triple Debounce Circuit  
Description  
Features  
The ELM410 provides all of the necessary  
circuitry to connect as many as three independent  
mechanical contacts to an electronic circuit.  
• Low power CMOS design - typically 1mA at 5V  
• Wide supply range - 3.0 to 5.5 volt operation  
• Simultaneous monitoring of three circuits  
All mechanical contacts, whether from switches,  
relays, etc. will have inherent ‘bounce’ when they  
make or break a connection. Depending on the type  
of switch, this fluctuation can be quite pronounced,  
often being interpreted as multiple inputs by high  
speed digital circuits.  
• Full 25msec debounce period on contact closure  
and opening, without external components  
• Internal pullup resistors for contact monitoring  
• High current drive outputs - up to 25 mA  
• Can be cascaded to provide sequential outputs  
This circuit provides all of the logic required to  
remove the bounce from most mechanical sources,  
without the use of additional components. As well,  
internal pull-up resistors have been provided so that  
the switch inputs can be directly connected to the 8  
pin package.  
Connection Diagram  
PDIP and SOIC  
(top view)  
The ELM410 provides three separate inverters  
which follow the input directly. No latching or  
‘memory action’ is provided, as it is in the case of  
the ELM411.  
1
2
3
4
8
7
6
5
VDD  
Out1  
Out2  
In3  
VSS  
In1  
In2  
Applications  
Out3  
• Pushbutton interface for logic circuits  
• Limit switch monitoring  
• Time delay generation  
Block Diagram  
VDD  
Debounce  
Timers  
2
7
6
5
Out1  
In1  
VDD  
Debounce  
Timers  
3
Out2  
In2  
VDD  
Debounce  
Timers  
4
In3  
Out3  
ELM410DSB  
Elm Electronics – Circuits for the Hobbyist  
1 of 4  
< http://www.elmelectronics.com/ >  

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