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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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DS14285S/TR 数据表(PDF) 18 Page - Dallas Semiconductor |
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DS14285S/TR 数据表(HTML) 18 Page - Dallas Semiconductor |
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18 / 26 page  DS14285/DS14287 18 of 26 AC ELECTRICAL CHARACTERISTICS (Over the operating range) PARAMETER SYMBOL MIN TYP MAX UNITS NOTES Cycle tCYC 225 DC ns Pulse Width, DS/E Low or RD/ WR High PWEL 115 ns Pulse Width, DS/E Low or RD/ WR Low PWEH 80 ns Input Rise and Fall Time tR, tF 30 ns R/ W Hold Time tRWH 10 ns R/ W Setup Time Before DS/E tRWS 10 ns Chip Select Setup Time Before DS, WR , or RD tCS 20 ns Chip Select Hold Time tCH 0 ns Read Data Hold Time tDHR 10 50 ns Write Data Hold Time tDHW 0 ns Muxed Address Valid Time to AS/ALE Fall tASL 30 ns Muxed Address Hold Time tAHL 10 ns Delay Time DS/E to AS/ALE Rise tASD 20 ns Pulse Width AS/ALE High PWASH 60 ns Delay Time, AS/ALE to DS/E Rise tASED 35 ns Output Data Delay Time From DS/E or RD tDDR 10 75 ns 9 Data Setup Time tDSW 60 ns Reset Pulse Width tRWL 5 µs IRQ Release from DS tIRDS 2 µs IRQ Release from RESET tIRR 2 µs AC TEST CONDITIONS Input Pulse Level: 0 to 3.0V Input Rise/Fall Times: 5ns Input and Output Timing Reference Levels: 1.5V |
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