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MC74ACT257DTR2 Scheda tecnica(PDF) 6 Page - ON Semiconductor |
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MC74ACT257DTR2 Scheda tecnica(HTML) 6 Page - ON Semiconductor |
6 / 12 page MC74AC257, MC74ACT257 http://onsemi.com 6 AC CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D) Symbol Parameter VCC* (V) 74AC 74AC Unit Fig. No. TA = +25°C CL = 50 pF TA = −40°C to +85°C CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay 3.3 1.5 5.0 8.5 1.0 9.0 ns 3−5 In to Zn 5.0 1.5 4.0 6.0 1.0 7.0 tPHL Propagation Delay 3.3 1.5 6.0 8.5 1.0 9.0 ns 3−5 In to Zn 5.0 1.5 4.5 6.0 1.0 7.0 tPLH Propagation Delay 3.3 1.5 7.0 10.5 1.5 11.5 ns 3−6 S to Zn 5.0 1.5 5.0 7.5 1.0 8.5 tPHL Propagation Delay 3.3 1.5 7.5 10.5 1.5 11.5 ns 3−6 S to Zn 5.0 1.5 5.5 7.5 1.0 8.5 tPZH Output Enable Time 3.3 1.5 6.5 9.5 1.0 10.5 ns 3−7 5.0 1.5 5.0 7.5 1.0 8.5 tPZL Output Enable Time 3.3 1.5 5.5 9.0 1.0 10.0 ns 3−8 5.0 1.5 5.0 8.5 1.0 9.5 tPHZ Output Disable Time 3.3 1.5 5.5 10.0 1.0 11.0 ns 3−7 5.0 1.5 5.0 9.0 1.0 10.0 tPLZ Output Disable Time 3.3 1.5 5.5 9.0 1.0 10.0 ns 3−8 5.0 1.5 5.0 8.0 1.0 9.0 *Voltage Range 3.3 V is 3.3 V ±0.3 V. *Voltage Range 5.0 V is 5.0 V ±0.5 V. |
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