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DM74S74M Scheda tecnica(PDF) 3 Page - Fairchild Semiconductor |
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DM74S74M Scheda tecnica(HTML) 3 Page - Fairchild Semiconductor |
3 / 5 page 3 www.fairchildsemi.com Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Note 5: All typicals are at VCC = 5V, TA = 25°C. Note 6: Clear is tested with preset HIGH and preset is tested with clear HIGH. Note 7: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 8: With all outputs OPEN, ICC is measured with the Q and Q outputs HIGH in turn. At the time of measurement, the clock is grounded. Switching Characteristics at VCC = 5V and TA = 25°C Symbol Parameter Conditions Min Typ Max Units (Note 5) VI Input Clamp Voltage VCC = Min, II = − 18 mA −1.2 V VOH HIGH Level VCC = Min, IOH = Max 2.7 3.4 V Output Voltage VIL = Max, VIH = Min VOL LOW Level VCC = Min, IOL = Max 0.5 V Output Voltage VIH = Min, VIL = Max II Input Current @ Max Input Voltage VCC = Max, VI = 5.5V 1 mA IIH HIGH Level VCC = Max D 50 Input Current VI = 2.7V Clear 150 µA Preset 100 Clock 100 IIL LOW Level VCC = Max D −2 Input Current VI = 0.5V Clear −6 mA (Note 6) Preset −4 Clock −4 IOS Short Circuit Output Current VCC = Max (Note 7) −40 −100 mA ICC Supply Current VCC = Max, (Note 8) 30 50 mA RL = 280Ω Symbol Parameter From (Input) CL = 15 pF CL = 50 pF Units To (Output) Min Max Min Max fMAX Maximum Clock Frequency 75 65 MHz tPLH Propagation Delay Time Preset to Q 6 9 ns LOW-to-HIGH Level Output tPLH Propagation Delay Time Clear to Q 69 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Preset to Q 13.5 17 ns HIGH-to-LOW Level Output (Clock HIGH) tPHL Propagation Delay Time Preset to Q 814 ns HIGH-to-LOW Level Output (Clock LOW) tPHL Propagation Delay Time Clear to Q 13.5 16 ns HIGH-to-LOW Level Output (Clock HIGH) tPHL Propagation Delay Time Clear to Q 8 13 ns HIGH-to-LOW Level Output (Clock LOW) tPLH Propagation Delay Time Clock to Q or Q 912 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Clock to Q or Q 914 ns HIGH-to-LOW Level Output |
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