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74HC257DB Folha de dados(PDF) 6 Page - NXP Semiconductors |
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74HC257DB Folha de dados(HTML) 6 Page - NXP Semiconductors |
6 / 17 page 74HC_HCT257_5 © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 05 — 13 January 2010 6 of 17 NXP Semiconductors 74HC257; 74HCT257 Quad 2-input multiplexer; 3-state 9. Static characteristics Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ Max Min Max Min Max 74HC257 VIH HIGH-level input voltage VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V VIL LOW-level input voltage VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V VOH HIGH-level output voltage VI = VIH or VIL IO = −20 μA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V IO = −20 μA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V IO = −20 μA; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V IO = −6.0 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V IO = −7.8 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V VOL LOW-level output voltage VI = VIH or VIL IO = 20 μA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V IO = 6.0 mA; VCC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V IO = 7.8 mA; VCC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V II input leakage current VI = VCC or GND; VCC = 6.0 V - - ±0.1 - ±1.0 ±1.0 ±1.0 μA IOZ OFF-state output current VI = VIH or VIL; VO = VCC or GND; VCC = 6.0 V - - ±0.5 - ±5.0 ±10.0 ±10.0 μA ICC supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 - 80 160 160 μA Ci input capacitance - 3.5 - pF 74HCT257 VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V VIL LOW-level input voltage VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V VOH HIGH-level output voltage VI = VIH or VIL; VCC = 4.5 V IO = −20 μA 4.4 4.5 - 4.4 - 4.4 - V IO = −6 mA 3.98 4.32 - 3.84 - 3.7 - V VOL LOW-level output voltage VI = VIH or VIL; VCC = 4.5 V - 0.1 - 0.1 IO = 20 μA - 0 0.1 - 0.33 - 0.4 V IO = 6.0 mA - 0.15 0.26 - ±1.0 - ±1.0 V II input leakage current VI = VCC or GND; VCC = 5.5 V - - ±0.1 - ±5.0 - ±10 μA |
Nº de peça semelhante - 74HC257DB |
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Descrição semelhante - 74HC257DB |
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