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DS8024 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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DS8024 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 15 page Smart Card Interface _______________________________________________________________________________________ 5 RECOMMENDED DC OPERATING CONDITIONS (continued) (VDD = +3.3V, VDDA = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CONTROL PINS (CLKDIV1, CLKDIV2, CMDVCC, RSTIN, 5V/3V) Input Low Voltage VIL -0.3 0.3 x VDD V Input High Voltage VIH 0.7 x VDD VDD + 0.3 V Input Low Current IIL_IO 0 < VIL < VDD 5 µA Input High Current IIH_IO 0 < VIH < VDD 5 µA Integrated Pullup Resistor RPU Pullup to VDD, 5V/ 3V only 50 85 120 k INTERRUPT OUTPUT PIN (OFF) Output Low Voltage VOL IOL = 2mA 0 0.3 V Output High Voltage VOH IOH = -15µA 0.75 x VDD V Integrated Pullup Resistor RPU Pullup to VDD 12 20 28 k PRES, PRES PINS Input Low Voltage VIL_PRES 0.3 x VDD V Input High Voltage VIH_PRES 0.7 x VDD V Input Low Current IIL_PRES VIL_PRES = 0V 40 µA Input High Current IIH_PRES VIH_PRES = VDD 40 µA TIMING Activation Time tACT 160 µs Deactivation Time tDEACT 80 µs Window Start t3 95 CLK to Card Start Time Window End t5 160 µs PRES/PRES Debounce Time tDEBOUNCE 8 ms Note 1: Operation guaranteed at TA = -40°C and TA = +85°C, but not tested. Note 2: IDD_IC measures the amount of current used by the DS8024 to provide the smart card current minus the load. Note 3: Guaranteed by design, but not production tested. |
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