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74HC14D-T 数据表(PDF) 6 Page - NXP Semiconductors |
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74HC14D-T 数据表(HTML) 6 Page - NXP Semiconductors |
6 / 21 page 74HC_HCT14 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 6 — 19 September 2012 6 of 21 NXP Semiconductors 74HC14; 74HCT14 Hex inverting Schmitt trigger 11. Dynamic characteristics [1] tpd is the same as tPHL and tPLH. [2] tt is the same as tTHL and tTLH. [3] 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 V; N = number of inputs switching; (C L VCC 2 f o) = sum of outputs. Table 7. Dynamic characteristics GND = 0 V; CL =50 pF; for test circuit see Figure 7. Symbol Parameter Conditions Tamb = 25 C Tamb = 40 C to +125 C Unit Min Typ Max Max (85 C) Max (125 C) 74HC14 tpd propagation delay nA to nY; see Figure 6 [1] VCC = 2.0 V - 41 125 155 190 ns VCC = 4.5 V - 15 25 31 38 ns VCC = 5.0 V; CL =15pF - 12 - - - ns VCC = 6.0 V - 12 21 26 32 ns tt transition time see Figure 6 [2] VCC = 2.0 V - 19 75 95 110 ns VCC = 4.5 V - 7 15 19 22 ns VCC = 6.0 V - 6 13 15 19 ns CPD power dissipation capacitance per package; VI =GND to VCC [3] -7- - - pF 74HCT14 tpd propagation delay nA to nY; see Figure 6 [1] VCC = 4.5 V - 20 34 43 51 ns VCC = 5.0 V; CL =15pF - 17 - - - ns tt transition time VCC = 4.5 V; see Figure 6 [2] - 7 15 19 22 ns CPD power dissipation capacitance per package; VI =GND to VCC 1.5 V [3] -8- - - pF |
类似零件编号 - 74HC14D-T |
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类似说明 - 74HC14D-T |
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