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DM74LS90 Folha de dados(PDF) 3 Page - Fairchild Semiconductor |
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DM74LS90 Folha de dados(HTML) 3 Page - Fairchild Semiconductor |
3 / 6 page 3 www.fairchildsemi.com Absolute Maximum Ratings(Note 4) Note 4: 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” table 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 5: CL = 15 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V. Note 6: CL = 50 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V. Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Note 7: All typicals are at VCC = 5V, TA = 25°C. Supply Voltage 7V Input Voltage (Reset) 7V Input Voltage (A or B) 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 −0.4 mA IOL LOW Level Output Current 8 mA fCLK Clock Frequency (Note 5) A to QA 032 MHz B to QB 016 fCLK Clock Frequency (Note 6) A to QA 020 MHz B to QB 010 tW Pulse Width (Note 5) A 15 B30 ns Reset 15 tW Pulse Width (Note 6) A 25 B50 ns Reset 25 tREL Reset Release Time (Note 5) 25 ns tREL Reset Release Time (Note 6) 35 ns TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 7) VI Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V VOH HIGH Level VCC = Min, IOH = Max 2.7 3.4 V Output Voltage VIL = Max, VIH = Min VOL LOW Level VCC = Min, IOL = Max (Note 8) V Output Voltage VIL = Max, VIH = Min 0.35 0.5 IOL = 4 mA, VCC = Min 0.25 0.4 II Input Current @ Max VCC = Max, VI = 7V Reset 0.1 mA Input Voltage VCC = Max A 0.2 VI = 5.5V B 0.4 IIH HIGH Level VCC = Max, VI = 2.7V Reset 20 µA Input Current A 40 B80 IIL LOW Level VCC = Max, VI = 0.4V Reset −0.4 mA Input Current A −2.4 B −3.2 IOS Short Circuit Output Current VCC = Max (Note 9) −20 −100 mA ICC Supply Current VCC = Max (Note 7) 9 15 mA |
Nº de peça semelhante - DM74LS90 |
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Descrição semelhante - DM74LS90 |
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