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| 22011124资料 | |
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22011124 PDF Download |
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File Size : 116 KB
Manufacturer:MOLEX Description: Typically, a sinusoidal AC voltage will be used for the clock signal, with a peak magnitude that is greater than VDD (or less than VSS). For these cases, a series resistor (100KΩ in the figures) must be added to prevent the input currents from exceeding the protection diode capabilities. Another design consideration is the need to provide a DC path from the Clock input back to either VDD or VSS at all times (so the CMOS input is not left floating). As an example, connecting to one side of a centre-tapped transformer that has its centre connected to VSS is an excellent way to obtain a signal, while maintaining a DC path to VSS through the winding. No extra resistor is needed in this case. Connecting to the DC side of a half wave rectifier circuit is likely not advisable however, without adding an extra pulldown resistor to ensure that the voltage returns to Vss when the clock signal is not present. (Recall that a reverse biased diode is essentially an open circuit.) |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：22011124 厂 家：MOLEX 封 装： 批 号：2002年1月 数 量：10.300 说 明：绝对原装正品底价 |
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运 费： 所在地： 新旧程度： |
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| 联系人：龙先生,胡小姐 |
| 电 话：0755-83226907,83229025,83226903 |
| 手 机：13927436669 |
| QQ：1109170345,514620629 |
| MSN：hlh1999@msn.com |
| 传 真：0755-83226930 |
| EMail：sale@cdf-ic.com |
| 公司地址： 深圳市福田区中航路新亚洲电子商城国利大厦710室. |
