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74LVC4245APW データシート(PDF) 4 Page - NXP Semiconductors |
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74LVC4245APW データシート(HTML) 4 Page - NXP Semiconductors |
4 / 17 page 74LVC4245A_6 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 06 — 18 January 2008 4 of 17 NXP Semiconductors 74LVC4245A Octal dual supply translating transceiver; 3-state 6. Functional description [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state. 7. Limiting values [1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] For SO24 packages: above 70 °C the value of P tot derates linearly with 8 mW/K. For (T)SSOP24 packages: above 60 °C the value of P tot derates linearly with 5.5 mW/K. For DHVQFN24 packages: above 60 °C the value of P tot derates linearly with 4.5 mW/K. 8. Recommended operating conditions Table 3. Functional table[1] Input Input/output OE DIR An Bn L L A = B input L H input B = A HX Z Z Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCCA supply voltage 5 V port −0.5 +6.5 V VCCB supply voltage 3 V port −0.5 +4.6 V IIK input clamping current VI < 0 V −50 - mA VI input voltage [1] −0.5 +6.5 V IOK output clamping current VO > VCC or VO < 0 V - ±50 mA VO output voltage output HIGH or LOW state [1] −0.5 VCC + 0.5 V output 3-state [1] −0.5 +6.5 V IO output current VO = 0 V to VCC - ±50 mA ICC supply current - 100 mA IGND ground current −100 - mA Tstg storage temperature −65 +150 °C Ptot power dissipation Tamb = −40 °C to +125 °C [2] - 500 mW Table 5. Recommended operating conditions Symbol Parameter Conditions Min Typ Max Unit VCCA supply voltage 5 V port (for maximum speed performance) VCCA ≥ VCCB; see Figure 5 1.5 - 5.5 V VCCB supply voltage 3 V port (for low-voltage applications) VCCA ≥ VCCB; see Figure 5 1.5 - 3.6 V VI input voltage for control inputs 0 - 5.5 V VO output voltage output HIGH or LOW state 0 - VCC V output 3-state 0 - 5.5 V Tamb ambient temperature −40 - +125 °C |
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