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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST72734 датащи(PDF) 135 Page - STMicroelectronics |
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ST72734 датащи(HTML) 135 Page - STMicroelectronics |
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135 / 144 page  ST72774/ST727754/ST72734 135/144 AC/DC ELECTRICAL CHARACTERISTICS (Cont’d) Note: Note: All voltages are referred to VSS unless otherwise specified. STANDARD I/O PORT PINS Symbol Parameter Conditions Min Typ Max Unit VOL Output Low Level Voltage Port A[7,2:0], Port B[7:4], Port C[7:0], Port D[6:0] Push Pull IOL = -1.6mA VDD=5V - - 0.4 V VOL Output Low Level Voltage Port A[6:3] Open Drain IOL = -1.6mA VDD=5V - - 0.4 V VOL Output Low Level Voltage Port A and Port C IOL = -10mA VDD=5V - - 1.5 V VOL Output Low Level Voltage Port B[3:0] Open Drain IOL = -3mA VDD=5V - - 0.4 V VOH Output High Level Voltage Port A[7, 2:0], Port B[7:4], Port C [7:0], Port D [6:0] Push Pull IOH = 1.6mA VDD-0.8 - - V VIH Input High Level Voltage Port A [7:0], Port B [7:0], Port C [7:0], Port D[6:0], RESET Leading Edge 0.7xVDD VDD V VIH HSYNC,VSYNCI, CSYNCI, HFBACK, VFBACK VDD= 5V 2.0 V VIL HSYNC,VSYNCI, CSYNCI, HFBACK, VFBACK VDD= 5V 0.8 V VIL Input Low Voltage Port A [7:0], Port B[7:0], Port C[7:0], Port D [6:0], RESET Trailing Edge VSS 0.3xVDD V IIL I/O Ports Hi-Z Leakage Current Port A [7:0], Port B[7:0], Port C[7:0], Port D [6:0], RESET 10 µA COUT CIN Capacitance: Ports (as Input or Output), RESET 12 8 pF pF IRPU Pull-up resistor current VDD=5V VIN=VSS T=25°C 280 µA POWER ON/OFF Electrical Specifications Symbol Parameter Conditions Min Typ Max Unit VTRH Power ON/OFF Reset Trigger VDD rising edge VDD Variation 50mV/mS 3.35 3.65 3.9 V VTRL Power ON/OFF Reset Trigger VDD falling edge VDD Variation 50mV/mS 3.1 3.4 3.7 V VTRM VDD minimum for Power ON/OFF Reset active VDD Variation 50mV/mS 2.0 2.2 V VTRHyst Power ON/OFF LVD Hysteresis VDD Variation 50mV/mS 250 mV |
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