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DS3100 数据表(PDF) 80 Page - Maxim Integrated Products |
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DS3100 数据表(HTML) 80 Page - Maxim Integrated Products |
80 / 226 page DS3100 Stratum 3/3E Timing Card IC 80 of 226 7.14 Power-Supply Considerations Due to the dual-power-supply nature of the DS3100, some I/Os have parasitic diodes between a 1.8V supply and a 3.3V supply. When ramping power supplies up or down, care must be taken to avoid forward-biasing these diodes because it could cause latchup. Two methods are available to prevent this. The first method is to place a Schottky diode external to the device between the 1.8V supply and the 3.3V supply to force the 3.3V supply to be less than one parasitic diode drop below the 1.8V supply. The second method is to ramp up the 3.3V supply first and then ramp up the 1.8V supply. 7.15 Initialization After power-up or reset, a series of writes must be done to the DS3100 to tune it for optimal performance. This series of writes is called the initialization script. Each die revision of the DS3100 has a different initialization script. Download the latest initialization scripts from the DS3100 website, www.maxim-ic.com/DS3100, or email telecom.support@dalsemi.com. |
类似零件编号 - DS3100 |
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类似说明 - DS3100 |
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