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74HC245N Datenblatt(PDF) 5 Page - NXP Semiconductors |
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74HC245N Datenblatt(HTML) 5 Page - NXP Semiconductors |
5 / 22 page 9397 750 14502 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 — 31 January 2005 5 of 22 Philips Semiconductors 74HC245; 74HCT245 Octal bus tranceiver; 3-state 7. Functional description 7.1 Function table [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state. 8. Limiting values [1] For DIP20 packages: above 70 °C, Ptot derates linearly with 12 mW/K. For SO20 packages: above 70 °C, Ptot derates linearly with 8 mW/K. For SSOP20 and TSSOP20 packages: above 60 °C, Ptot derates linearly with 5.5 mW/K. For DHVQFN20 packages: above 60 °C, Ptot derates linearly with 4.5 mW/K. B1 17 data input/output B0 18 data input/output OE 19 output enable input (active LOW) VCC 20 supply voltage Table 3: Pin description …continued Symbol Pin Description Table 4: Function table [1] Input Input/output OE DIR An Bn L L A = B input L H input B = A HX Z Z Table 5: 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 VCC supply voltage −0.5 +7 V IIK input diode current VI < −0.5 V or VI >VCC + 0.5 V - ±20 mA IOK output diode current VO < −0.5 V or VO >VCC + 0.5 V - ±20 mA IO output source or sink current VO = −0.5 V to VCC + 0.5 V - ±35 mA ICC, IGND VCC or GND current - ±70 mA Tstg storage temperature −65 +150 °C Ptot total power dissipation [1] DIP20 package - 750 mW SO20, SSOP20, TSSOP20 and DHVQFN20 packages - 500 mW |
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