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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCA9564 датащи(PDF) 26 Page - NXP Semiconductors |
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PCA9564 датащи(HTML) 26 Page - NXP Semiconductors |
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26 / 31 page  Philips Semiconductors Product data PCA9564 Parallel bus to I2C-bus controller 2003 Apr 02 26 RD, CE INPUT VM VM Dn OUTPUT LOW-TO-FLOAT FLOAT-TO-LOW VI GND VCC tDD(ZL) VOH VOL tDF(LZ) SW02113 GND VM VM VY VX Dn OUTPUT HIGH-TO-FLOAT FLOAT-TO-HIGH OUTPUTS ENABLED OUTPUTS ENABLED OUTPUTS FLOATING tDF(HZ) tDD(ZH) VM = 1.5 V VX = VOL + 0.3 V VY = VOH - 0.3 V VOL AND VOH ARE TYPICAL OUTPUT VOLTAGE DROPS THAT OCCUR WITH THE OUTPUT LOAD. Figure 21. tDD and tDF times TEST S1 tDD(ZH)/tDF(HZ) 6 V tDD(ZL)/tDF(LZ) Open PULSE GENERATOR VI VO CL 50pF VCC DEFINITIONS RL = Load resistor. CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to the output impedance ZO of the pulse generators. 6.0 V RT RL = 500 Ω Open D.U.T. RL = 500 Ω SW02114 Figure 22. Test circuitry for switching times |
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