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74LVC32245A Fiches technique(PDF) 7 Page - NXP Semiconductors |
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74LVC32245A Fiches technique(HTML) 7 Page - NXP Semiconductors |
7 / 14 page 74LVC32245A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 3 — 16 December 2011 7 of 14 NXP Semiconductors 74LVC32245A 32-bit bus transceiver with direction pin; 5 V tolerant; 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 5. 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 nBn; nBn to nAn; see Figure 3 [2] VCC = 1.2 V - 13.0 - - - ns VCC = 1.65 V to 1.95 V 1.5 4.8 10.4 1.5 12.0 ns VCC = 2.3 V to 2.7 V 1.0 2.6 5.4 1.0 6.1 ns VCC = 2.7 V 1.0 2.6 4.7 1.0 6.0 ns VCC = 3.0 V to 3.6 V 1.0 2.2 4.5 1.0 6.0 ns ten enable time nOE to nAn, nBn: see Figure 4 [2] VCC = 1.2 V - 15.0 - - - ns VCC = 1.65 V to 1.95 V 1.5 5.8 12.5 1.5 14.4 ns VCC = 2.3 V to 2.7 V 1.0 3.3 6.9 1.0 8.0 ns VCC = 2.7 V 1.5 3.4 6.7 1.5 8.5 ns VCC = 3.0 V to 3.6 V 1.0 2.7 5.5 1.0 7.0 ns tdis disable time nOE to nAn, nBn; see Figure 4 [2] VCC = 1.2 V - 11.0 - - - ns VCC = 1.65 V to 1.95 V 1.0 4.4 9.7 1.0 11.2 ns VCC = 2.3 V to 2.7 V 0.5 2.5 5.5 0.5 6.5 ns VCC = 2.7 V 1.5 2.5 6.6 1.5 8.5 ns VCC = 3.0 V to 3.6 V 1.5 3.1 5.6 1.5 7.0 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 buffer; VI =GND to VCC [4] VCC = 1.65 V to 1.95 V - 11.5 - - - pF VCC = 2.3 V to 2.7 V - 15.2 - - - pF VCC = 3.0 V to 3.6 V - 18.5 - - - pF |
Numéro de pièce similaire - 74LVC32245A_15 |
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Description similaire - 74LVC32245A_15 |
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