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DM74LS670N Scheda tecnica(PDF) 4 Page - Fairchild Semiconductor |
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DM74LS670N Scheda tecnica(HTML) 4 Page - Fairchild Semiconductor |
4 / 6 page www.fairchildsemi.com 4 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Note 8: All typicals are at VCC = 5V, TA = 25°C. Note 9: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 10: ICC is measured with 4.5V applied to all DATA inputs and both ENABLE inputs, all ADDRESS inputs are grounded and all outputs are OPEN. Switching Characteristics at VCC = 5V and TA = 25°C Note 11: CL = 5 pF. Symbol Parameter Conditions Min Typ Max Units (Note 8) VI Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V VOH HIGH Level VCC = Min, IOH = Max 2.4 3.4 V Output Voltage VIL = Max, VIH = Min VOL LOW Level VCC = Min, IOL = Max 0.34 0.5 V Output Voltage IOL = Max, VIH = Min II Input Current @ Max VCC = Max D, R or W 0.1 Input Voltage VI = 7V GW 0.2 mA GR 0.3 IIH HIGH Level VCC = Max D, R or W 20 Input Current VI = 2.7V GW 40 µA GR 60 IIL LOW Level VCC = Max D, R or W −0.4 Input Current VI = 0.4V GW −0.8 mA GR −1.2 IOZH Off-State Output Current with VCC = Max, VO = 2.7V 20 µA HIGH Level Output Voltage Applied VIH = Min, VIL = Max IOZL Off-State Output Current with VCC = Max, VO = 0.4V −20 µA LOW Level Output Voltage Applied VIH = Min, VIL = Max IOS Short Circuit Output Current VCC = Max (Note 9) −20 −100 mA ICC Supply Current VCC = Max (Note 10) 30 50 mA RL = 667Ω Symbol Parameter From (Input) CL = 45 pF CL = 150 pF Units To (Output) Min Max Min Max tPLH Propagation Delay Time Read Select to Q 40 50 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Read Select to Q 45 55 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Write Enable to Q 45 55 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Write Enable to Q 50 60 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Data to Q 45 55 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Data to Q 40 50 ns HIGH-to-LOW Level Output tPZH Output Enable Time Read Enable to Any Q 35 45 ns to HIGH Level Output tPZL Output Enable Time Read Enable to Any Q 40 50 ns to LOW Level Output tPHZ Output Disable Time from Read Enable to Any Q 50 ns HIGH Level Output (Note 11) tPLZ Output Disable Time from Read Enable to Any Q 35 ns LOW Level Output (Note 11) |
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