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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STW5095 датащи(PDF) 52 Page - STMicroelectronics |
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STW5095 датащи(HTML) 52 Page - STMicroelectronics |
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52 / 73 page  STw5095 Timing specifications 51/72 8 Timing specifications Unless otherwise specified, VCCIO = 1.71 V to 2.7 V,Tamb = -30°C to 85°C, max capacitive load 20 pF; typical characteristics are specified at VCCIO = 2.4 V, Tamb = 25 °C; all signals are referenced to GND, see Note below figure for timing definitions. Figure 13. A.C. testing input-output waveform Note: A signal is valid if it is above VIH or below VIL and invalid if it is between VIL and VIH. For the purpose of this specification the following conditions apply (see Figure 13 above): a) All input signal are defined as: VIL =0.2•VCCIO, VIH =0.8•VCCIO, tR < 10ns, tF < 10ns. b) Delay times are measured from the inputs signal valid to the output signal valid. c) Setup times are measured from the data input valid to the clock input invalid. d) Hold times are measured from the clock signal valid to the data input invalid. Note: All timing specifications subject to change. AC Testing: inputs are driven at 0.8 •VCCIO for a logic ‘1’ and 0.2•VCCIO for a logic ‘0’. Timing measurements are made at 0.7 •VCCIO for a logic ‘1’ and 0.3•VCCIO for a logic ‘0’. TEST POINTS 0.7 •VCCIO 0.3 •VCCIO 0.7 •VCCIO 0.3 •VCCIO 0.8 •VCCIO 0.2 •VCCIO INPUT ⁄ OUTPUT |
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