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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM79C960KCW датащи(PDF) 99 Page - Advanced Micro Devices |
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AM79C960KCW датащи(HTML) 99 Page - Advanced Micro Devices |
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99 / 127 page  P R E L I M I N A R Y AMD 1-441 Am79C960 SWITCHING CHARACTERISTICS: AUI Notes: 1. DI pulses narrower than tPWODI (min) will be rejected; pulses wider than tPWODI (max) will turn internal DI carrier sense on. 2. DI pulses narrower than tPWKDI (min) will maintain internal DI carrier sense on; pulses wider than tPWKDI (max) will turn internal DI carrier sense off. 3. CI pulses narrower than tPWOCI (min) will be rejected; pulses wider than tPWOCI (max) will turn internal CI carrier sense on. 4. CI pulses narrower than tPWKCI (min) will maintain internal CI carrier sense on; pulses wider than tPWKCI (max) will turn internal CI carrier sense off. Parameter Symbol Parameter Description Test Conditions Min Max Unit AUI Port tDOTR DO+,DO- Rise Time (10% to 90%) 2.5 5.0 ns tDOTF DO+,DO- Fall Time (90% to 10%) 2.5 5.0 ns tDORM DO+,DO- Rise and Fall Time Mismatch 1.0 ns tDOETD DO+/- End of Transmission 200 375 ns tPWODI DI Pulse Width Accept/Reject |VIN| > |VASQ|15 45 ns Threshold (Note 1) tPWKDI DI Pulse Width Maintain/Turn-Off |VIN| > |VASQ| 136 200 ns Threshold (Note 2) tPWOCI CI Pulse Width Accept/Reject |VIN| > |VASQ|10 26 ns Threshold (Note 3) tPWKCI CI Pulse Width Maintain/Turn-Off |VIN| > |VASQ| 90 160 ns Threshold (Note 4) Internal MENDEC Clock Timing tX1 XTAL1 Period VIN = External Clock 49.995 50.005 ns tX1H XTAL1 HIGH Pulse Width VIN = External Clock 20 ns tX1L XTAL1 LOW Pulse Width VIN = External Clock 20 ns tX1R XTAL1 Rise Time VIN = External Clock 5 ns tX1F XTAL1 Fall Time VIN = External Clock 5 ns |
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