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DM7490A Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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DM7490A Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 5 page 3 www.fairchildsemi.com Absolute Maximum Ratings(Note 3) Note 3: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions Note 4: TA = 25°C and VCC = 5V. DC Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Note 5: All typicals are at VCC = 5V, TA = 25°C. Note 6: QA outputs are tested at IOL = Max plus the limit value of IIL for the B input. This permits driving the B input while maintaining full fan-out capability. Note 7: Not more than one output should be shorted at a time. Note 8: ICC is measured with all outputs open, both RO inputs grounded following momentary connection to 4.5V, and all other inputs grounded. Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range 0 °C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units VCC Supply Voltage 4.75 5 5.25 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −0.8 mA IOL LOW Level Output Current 16 mA fCLK Clock Frequency A 0 32 MHz (Note 4) B 0 16 tW Pulse Width A 15 (Note 4) B 30 ns Reset 15 tREL Reset Release Time (Note 4) 25 ns TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 5) VI Input Clamp Voltage VCC = Min, II = −12 mA −1.5 V VOH HIGH Level VCC = Min, IOH = Max 2.4 3.4 V Output Voltage VIL = Max, VIH = Min VOL LOW Level VCC = Min, IOL = Max 0.2 0.4 V Output Voltage VIH = Min, VIL = Max (Note 6) II Input Current @ Max Input Voltage VCC = Max, VI = 5.5V 1 mA IIH HIGH Level VCC = Max A 80 Input Current VI = 2.7V Reset 40 µA B 120 IIL LOW Level VCC = Max A −3.2 Input Current VI = 0.4V Reset −1.6 mA B −4.8 IOS Short Circuit Output Current VCC = Max (Note 7) −18 −57 mA ICC Supply Current VCC = Max (Note 8) 29 42 mA |
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