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74LVC2244A Fiches technique(PDF) 7 Page - NXP Semiconductors |
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74LVC2244A Fiches technique(HTML) 7 Page - NXP Semiconductors |
7 / 17 page 74LVC2244A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 5 — 3 November 2011 7 of 17 NXP Semiconductors 74LVC2244A Octal buffer/line driver; 30 series termination; 3-state 10. Dynamic characteristics [1] Typical values are measured at Tamb =25 C and VCC = 1.2 V, 1.8 V, 2.5 V, 2.7 V, and 3.3 V respectively. [2] tpd is the same as tPLH and tPHL. ten is the same as tPZL and tPZH. tdis is the same as tPLZ and tPHZ. [3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design. [4] CPD is used to determine the dynamic power dissipation (PD in W). PD =CPD VCC2 fi N+ (CL VCC2 fo) where: fi = input frequency in MHz; fo = output frequency in MHz CL = output load capacitance in pF VCC = supply voltage in Volts N = number of inputs switching (C L VCC 2 f o) = sum of the outputs Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7. Symbol Parameter Conditions Tamb = 40 C to +85 C 40 C to +125 C Unit Min Typ[1] Max Min Max tpd propagation delay nAn to nYn; see Figure 5 [2] VCC = 1.2 V - 35 - - - ns VCC = 1.65 V to 1.95 V 1.9 7.8 17.7 1.9 18.6 ns VCC = 2.3 V to 2.7 V 1.5 4.1 8.7 1.5 9.6 ns VCC = 2.7 V 1.5 4.1 6.4 1.5 7.0 ns VCC = 3.0 V to 3.6 V 1.5 3.5 5.5 1.5 8.0 ns ten enable time nOE to nYn; see Figure 6 [2] VCC = 1.2 V - 38 - - - ns VCC = 1.65 V to 1.95 V 2.3 8.9 19.7 2.3 20.7 ns VCC = 2.3 V to 2.7 V 1.9 5.0 10.3 1.9 11.4 ns VCC = 2.7 V 1.5 5.1 8.1 1.5 9.0 ns VCC = 3.0 V to 3.6 V 1.0 4.0 7.1 1.0 10.5 ns tdis disable time nOE to nYn; see Figure 6 [2] VCC = 1.2 V - 9.0 - - - ns VCC = 1.65 V to 1.95 V 2.9 4.7 9.3 2.9 9.8 ns VCC = 2.3 V to 2.7 V 1.0 2.6 5.0 1.0 5.6 ns VCC = 2.7 V 1.5 3.4 6.4 1.5 7.0 ns VCC = 3.0 V to 3.6 V 1.5 3.2 5.4 1.5 8.0 ns tsk(o) output skew time VCC = 3.0 V to 3.6 V [3] - - 1.0 - 1.5 ns CPD power dissipation capacitance per input; VI =GND to VCC [4] VCC = 1.65 V to 1.95 V - 1.8 - - - pF VCC = 2.3 V to 2.7 V - 4.9 - - - pF VCC = 3.0 V to 3.6 V - 7.7 - - - pF |
Numéro de pièce similaire - 74LVC2244A_15 |
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Description similaire - 74LVC2244A_15 |
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