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74AHCT273PW Arkusz danych(PDF) 9 Page - NXP Semiconductors |
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74AHCT273PW Arkusz danych(HTML) 9 Page - NXP Semiconductors |
9 / 18 page 74AHC_AHCT273_3 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 — 13 May 2008 9 of 18 NXP Semiconductors 74AHC273; 74AHCT273 Octal D-type flip-flop with reset; positive-edge trigger [1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V). [2] tpd is the same as tPLH and tPHL. [3] tpd is the same as tPHL only. [4] 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 = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; Σ(CL × VCC2 × fo) = sum of the outputs. trec recovery time MR to CP; see Figure 8 VCC = 3.0 V to 3.6 V 2.5 - - 2.5 - 2.5 - ns VCC = 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - ns CPD power dissipation capacitance fi = 1 MHz; VI = GND to VCC [4] -14 - - - - - pF 74AHCT273; VCC = 4.5 V to 5.5 V tpd propagation delay CP to Qn; see Figure 7 [2] CL = 15 pF - 4.0 7.5 1.0 8.8 1.0 9.5 ns CL = 50 pF - 5.8 9.2 1.0 10.5 1.0 11.5 ns MR to Qn; see Figure 8 [3] CL = 15 pF - 3.9 10.0 1.0 11.6 1.0 12.5 ns CL = 50 pF - 5.6 11.0 1.0 12.6 1.0 14.0 ns fmax maximum frequency see Figure 7 CL = 15 pF 75 120 - 65 - 65 - MHz CL = 50 pF 50 75 - 45 - 45 - MHz tW pulse width CP HIGH or LOW; see Figure 7 5.0 - - 6.5 - 6.5 - ns MR LOW; see Figure 8 5.0 - - 6.0 - 6.0 - ns tsu set-up time Dn to CP; see Figure 9 3.0 - - 3.0 - 3.0 - ns th hold time Dn to CP; see Figure 9 1.0 - - 1.0 - 1.0 - ns trec recovery time MR to CP; see Figure 8 2.5 - - 2.5 - 2.5 - ns CPD power dissipation capacitance fi = 1 MHz; VI = GND to VCC [4] -18 - - - - - pF Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 10. Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ[1] Max Min Max Min Max |
Podobny numer części - 74AHCT273PW |
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Podobny opis - 74AHCT273PW |
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