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DM74AS640 Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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DM74AS640 Datasheet(HTML) 2 Page - Fairchild Semiconductor |
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2 / 5 page ![]() www.fairchildsemi.com 2 Absolute Maximum Ratings(Note 1) Note 1: 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 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Note 2: All typicals are at VCC = 5.0V, TA = 25°C. Note 3: For I/O ports, the parameters IIH and IIL include the OFF-State output current, IOZH and IOZL. Supply Voltage 7V Input Voltage Control Inputs 7V I/O Ports 5.5V Operating Free Air Temperature Range 0 °C to +70°C Storage Temperature Range −65°C to +150°C Typical θ JA N Package 51.5 °C M Package 69.0 °C Symbol Parameter Min Typ Max Units VCC Supply Voltage 4.5 5 5.5 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −15 mA IOL LOW Level Output Current 64 mA TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 2) VI Input Clamp Voltage VCC = Min, II = −18 mA −1.2 V VOH HIGH Level VCC = 4.5V to 5.5V, IOH = −2 mA VCC − 2V Output Voltage VCC = 4.5V, IOH = −3 mA 2.4 V VCC = 4.5V, IOH = Max 2.4 V VOL LOW Level Output Voltage VCC = Min, IOL = Max 0.35 0.55 V II Input Current at Max VCC = Max, VI = 7V, 0.1 mA Input Voltage (VI = 5.5V for A or B Ports) IIH HIGH Level VCC = Max Control Inputs 20 µA Input Current VI = 2.7V (Note 3) A or B Ports 70 IIL LOW Level VCC = Max, Control Inputs −0.5 mA Input Current VI = 0.4V (Note 3) A or B Ports −0.75 IO Output Drive Current VCC = Max, VO = 2.25V −50 −150 mA ICCH Supply Current with Outputs HIGH VCC = Max 37 58 mA ICCL Supply Current with Outputs LOW 78 123 mA ICCZ Supply Current with Outputs 51 80 mA in 3-STATE |
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