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74LVC8T245BQ 데이터시트(PDF) 5 Page - NXP Semiconductors |
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5 / 28 page 74LVC_LVCH8T245 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 3 — 12 December 2011 5 of 28 NXP Semiconductors 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver; 3-state [1] The minimum input voltage ratings and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] VCCO is the supply voltage associated with the output port. [3] VCCO + 0.5 V should not exceed 6.5 V. [4] For TSSOP24 package: Ptot derates linearly at 5.5 mW/K above 60 C. For DHVQFN24 package: Ptot derates linearly at 4.5 mW/K above 60 C. 8. Recommended operating conditions [1] VCCO is the supply voltage associated with the output port. [2] VCCI is the supply voltage associated with the input port. 9. Static characteristics IGND ground current per GND pin 100 - mA Tstg storage temperature 65 +150 C Ptot total power dissipation Tamb = 40 C to +125 C [4] -500 mW Table 4. Limiting values …continued In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit Table 5. Recommended operating conditions Symbol Parameter Conditions Min Max Unit VCC(A) supply voltage A 1.2 5.5 V VCC(B) supply voltage B 1.2 5.5 V VI input voltage 0 5.5 V VO output voltage Active mode [1] 0VCCO V Suspend or 3-state mode 0 5.5 V Tamb ambient temperature 40 +125 C t/V input transition rise and fall rate VCCI = 1.2 V [2] - 20 ns/V VCCI = 1.4 V to 1.95 V - 20 ns/V VCCI = 2.3 V to 2.7 V - 20 ns/V VCCI = 3 V to 3.6 V - 10 ns/V VCCI = 4.5 V to 5.5 V - 5 ns/V Table 6. Typical static characteristics at Tamb = 25 C At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Typ Max Unit VOH HIGH-level output voltage VI = VIH or VIL [1] IO = 3 mA; VCCO = 1.2 V - 1.09 - V VOL LOW-level output voltage VI = VIH or VIL IO = 3 mA; VCCO =1.2 V [1] -0.07 -V II input leakage current DIR, OE input; VI = 0 V to 5.5 V; VCCI = 1.2 V to 5.5 V [2] -- 1 A IBHL bus hold LOW current A or B port; VI =0.42V; VCCI =1.2 V [2] -19 - A IBHH bus hold HIGH current A or B port; VI =0.78V; VCCI =1.2 V [2] - 19 - A |
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