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74LVC2T45GD датащи(PDF) 11 Page - NXP Semiconductors |
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74LVC2T45GD датащи(HTML) 11 Page - NXP Semiconductors |
11 / 36 page 74LVC_LVCH2T45 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 4 — 20 August 2010 11 of 36 NXP Semiconductors 74LVC2T45; 74LVCH2T45 Dual supply translating transceiver; 3-state [1] CPD is used to determine the dynamic power dissipation (PD in μW). PD =CPD × VCC2 × fi × N+ Σ(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; Σ(C L × VCC 2 × f o) = sum of the outputs. [2] fi = 10 MHz; VI =GND to VCC; tr = tf = 1 ns; CL = 0 pF; RL = ∞ Ω. Table 11. Typical power dissipation capacitance at VCC(A) = VCC(B) and Tamb = 25 °C [1][2] Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions VCC(A) and VCC(B) Unit 1.8 V 2.5 V 3.3 V 5.0 V CPD power dissipation capacitance A port: (direction A to B); B port: (direction B to A) 23 34 pF A port: (direction B to A); B port: (direction A to B) 15 16 16 18 pF Table 12. Dynamic characteristics for temperature range −40 °C to +85 °C Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9; for wave forms see Figure 7 and Figure 8. Symbol Parameter Conditions VCC(B) Unit 1.5 V ± 0.1 V 1.8 V ± 0.15 V 2.5 V ± 0.2 V 3.3 V ± 0.3 V 5.0 V ± 0.5 V Min Max Min Max Min Max Min Max Min Max VCC(A) = 1.4 V to 1.6 V tPLH LOW to HIGH propagation delay A to B 2.8 21.3 2.4 17.6 2.0 13.5 1.7 11.8 1.6 10.5 ns B to A 2.8 21.3 2.6 19.1 2.3 14.9 2.3 12.4 2.2 12.0 ns tPHL HIGH to LOW propagation delay A to B 2.6 19.3 2.2 15.3 1.8 11.8 1.7 10.9 1.7 10.8 ns B to A 2.6 19.3 2.4 17.3 2.3 13.2 2.2 11.3 2.3 11.0 ns tPHZ HIGH to OFF-state propagation delay DIR to A 3.0 18.7 3.0 18.7 3.0 18.7 3.0 18.7 3.0 18.7 ns DIR to B 3.5 24.8 3.5 23.6 3.0 11.0 3.3 11.3 2.8 10.3 ns tPLZ LOW to OFF-state propagation delay DIR to A 2.4 11.4 2.4 11.4 2.4 11.4 2.4 11.4 2.4 11.4 ns DIR to B 2.8 18.3 3.0 17.2 2.5 9.4 3.0 10.1 2.5 9.4 ns tPZH OFF-statetoHIGH propagation delay DIR to A [1] - 39.6 - 36.3 - 24.3 - 22.5 - 21.4 ns DIR to B [1] - 32.7 - 29.0 - 24.9 - 23.2 - 21.9 ns tPZL OFF-state to LOW propagation delay DIR to A [1] - 44.1 - 40.9 - 24.2 - 22.6 - 21.3 ns DIR to B [1] - 38.0 - 34.0 - 30.5 - 29.6 - 29.5 ns VCC(A) = 1.65 V to 1.95 V tPLH LOW to HIGH propagation delay A to B 2.6 19.1 2.2 17.7 2.2 9.3 1.7 7.2 1.4 6.8 ns B to A 2.4 17.6 2.2 17.7 2.3 16.0 2.1 15.5 1.9 15.1 ns tPHL HIGH to LOW propagation delay A to B 2.4 17.3 2.0 14.3 1.6 8.5 1.8 7.1 1.7 7.0 ns B to A 2.2 15.3 2.0 14.3 2.1 12.9 2.0 12.6 1.8 12.2 ns tPHZ HIGH to OFF-state propagation delay DIR to A 2.9 17.1 2.9 17.1 2.9 17.1 2.9 17.1 2.9 17.1 ns DIR to B 3.2 24.1 3.2 21.9 2.7 11.5 3.0 10.3 2.5 8.2 ns tPLZ LOW to OFF-state propagation delay DIR to A 2.4 10.5 2.4 10.5 2.4 10.5 2.4 10.5 2.4 10.5 ns DIR to B 2.5 17.6 2.6 16.0 2.2 9.2 2.7 8.4 2.4 7.1 ns |
Аналогичный номер детали - 74LVC2T45GD |
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Аналогичное описание - 74LVC2T45GD |
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