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DM74LS74AM Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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DM74LS74AM Datasheet(HTML) 2 Page - Fairchild Semiconductor |
2 / 6 page www.fairchildsemi.com 2 Absolute Maximum Ratings(Note 2) Note 2: 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 3: CL = 15 pF, RL = 2 kΩ, TA = 25°C, and VCC = 5V. Note 4: CL = 50 pF, RL = 2 kΩ, TA = 25°C, and VCC = 5V. Note 5: The symbol ( ↑) indicates the rising edge of the clock pulse is used for reference. Note 6: TA = 25°C and VCC = 5V. Supply Voltage 7V Input Voltage 7V 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 3) 0 25 MHz fCLK Clock Frequency (Note 4) 0 20 MHz tW Pulse Width Clock HIGH 18 (Note 3) Preset LOW 15 ns Clear LOW 15 tW Pulse Width Clock HIGH 25 (Note 4) Preset LOW 20 ns Clear LOW 20 tSU Setup Time (Note 3)(Note 5) 20 ↑ ns tSU Setup Time (Note 4)(Note 5) 25 ↑ ns tH Hold Time (Note 5)(Note 6) 0 ↑ ns TA Free Air Operating Temperature 0 70 °C |
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