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DM74ALS169 数据表(PDF) 5 Page - Fairchild Semiconductor |
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DM74ALS169 数据表(HTML) 5 Page - Fairchild Semiconductor |
5 / 7 page 5 www.fairchildsemi.com Electrical Characteristics over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C Switching Characteristics over recommended operating free air temperature range Note 3: Propagation delay time from up/down to ripple carry must be measured with the counter at either a minimum or a maximum count. As the logic level of the up/down input is changed, the ripple carry output will follow. If the count is minimum (0), the ripple carry output transition will be in phase. If the count is maximum, the ripple carry output will be out of phase. Symbol Parameter Conditions Min Typ Max Units VIK Input Clamp Voltage VCC = 4.5V, II = −18 mA −1.5 V VOH HIGH Level IOH = −0.4 mA VCC − 2V Output Voltage VCC = 4.5V to 5.5V VOL LOW Level VCC = 4.5V IOL = 8 mA 0.35 0.5 V Output Voltage II Input Current @ Max VCC = 5.5V, VIH = 7V 0.1 mA Input Voltage IIH HIGH Level Input Current VCC = 5.5V, VIH = 2.7V 20 µA IIL LOW Level Input Current VCC = 5.5V, VIL = 0.4V −0.2 mA IO Output Drive Current VCC = 5.5V, VO = 2.25V −30 −112 mA ICC Supply Current VCC = 5.5V 15 25 mA Symbol Parameter Conditions From To Min Max Units fMAX Maximum Clock Frequency 40 MHz tPLH Propagation Delay Time VCC = 4.5V to 5.5V Clock Ripple Carry 3 20 ns LOW-to-HIGH Level Output RL = 500Ω tPHL Propagation Delay Time CL = 50 pF Clock Ripple Carry 6 20 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Clock Any Q 2 15 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Clock Any Q 5 20 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time En T Ripple Carry 2 13 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time En T Ripple Carry 3 16 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time U/D (Note 3) Ripple Carry 5 19 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time U/D (Note 3) Ripple Carry 5 19 ns HIGH-to-LOW Level Output |
类似零件编号 - DM74ALS169 |
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类似说明 - DM74ALS169 |
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