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DM74LS377 Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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DM74LS377 Datasheet(HTML) 3 Page - Fairchild Semiconductor |
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3 www.fairchildsemi.com 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 = 5V, TA = 25°C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Switching Characteristics VCC = +5.0V, TA = +25°C 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 TA Free Air Operating Temperature 0 70 °C tS (H) Setup Time HIGH or LOW 10 ns tS (L) Dn to CP 10 tH (H) Hold Time HIGH or LOW 5.0 ns tH (L) Dn to CP 5.0 tS (H) Setup Time HIGH or LOW 10 ns tS (L) E to CP 20 tH (H) Hold Time HIGH or LOW 5.0 ns tH (L) E to CP 5.0 tW (H) CP Pulse Width HIGH or LOW 20 ns tW (L) 20 Symbol Parameter Conditions Min Typ Max Units (Note 2) 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 VOL LOW Level VCC = Min, IOL = Max 0.35 0.5 Output Voltage VIH = Min V IOL = 4 mA, VCC = Min 0.25 0.4 II Input Current @ Max VCC = Max, VI = 7V 0.1 mA Input Voltage VI = 10V IIH HIGH Level Input Current VCC = Max, VI = 2.7V 20.0 µA IIL LOW Level Input Current VCC = Max, VI = 0.4V −0.4 mA IOS Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA ICC Supply Current VCC = Max 28 mA Symbol Parameter RL = 2 kΩ, CL = 15 pF Units Min Max fMAX Maximum Clock Frequency 30 MHz tPLH Propagation Delay 25 ns tPHL CP to Qn 25 |
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