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DM74LS158N датащи(PDF) 3 Page - Fairchild Semiconductor |
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DM74LS158N датащи(HTML) 3 Page - Fairchild Semiconductor |
3 / 7 page 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. DM74LS157 Recommended Operating Conditions DM74LS157 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. Note 4: ICC is measured with 4.5V applied to all inputs and all outputs OPEN. DM74LS157 Switching Characteristics at VCC = 5V and 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 Symbol Parameter Conditions Min Typ Max Units (Note 2) VI Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V VOH HIGH Level Output Voltage VCC = Min, IOH = Max, VIL = Max, VIH = Min 2.7 3.4 V VOL LOW Level VCC = Min, IOL = Max, VIL = Max, VIH = Min 0.35 0.5 V Output Voltage IOL = 4 mA, VCC = Min 0.25 0.4 II Input Current @ Max VCC = Max S or G 0.2 mA Input Voltage VI = 7V A or B 0.1 IIH HIGH Level VCC = Max S or G 40 µA Input Current VI = 2.7V A or B 20 IIL LOW Level VCC = Max S or G −0.8 mA Input Current VI = 0.4V A or B −0.4 IOS Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA ICC Supply Current VCC = Max (Note 4) 9.7 16 mA From (Input) RL = 2 kΩ Symbol Parameter To (Output) CL = 15 pF CL = 50 pF Units MinMax MinMax tPLH Propagation Delay Time Data to Y 14 18 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Data to Y 14 23 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Strobe to Y 20 24 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Strobe to Y 21 30 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Select to Y 23 28 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Select to Y 27 32 ns HIGH-to-LOW Level Output |
Аналогичный номер детали - DM74LS158N |
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Аналогичное описание - DM74LS158N |
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