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6 / 18 page 74LVC14A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 5 — 23 December 2011 6 of 18 NXP Semiconductors 74LVC14A Hex inverting Schmitt trigger with 5 V tolerant input [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. [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. 12. Waveforms CPD power dissipation capacitance per buffer; VI =GND to VCC [4] VCC = 1.65 V to 1.95 V - 9.0 - - - pF VCC = 2.3 V to 2.7 V - 12.5 - - - pF VCC = 3.0 V to 3.6 V - 15.6 - - - pF Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7. Symbol Parameter Conditions 40 C to +85 C 40 C to +125 C Unit Min Typ[1] Max Min Max VM = 1.5 V at VCC 2.7 V VM =0.5 VCC at VCC <2.7 V. VOL and VOH are typical output voltage levels that occur with the output load. Fig 6. Propagation delay input (nA) to output (nY) mna344 tPHL tPLH VM VM VM VM nA input nY output GND VI VOH VOL |
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