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74LV74 Scheda tecnica(PDF) 6 Page - NXP Semiconductors |
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74LV74 Scheda tecnica(HTML) 6 Page - NXP Semiconductors |
6 / 12 page Philips Semiconductors Product specification 74LV74 Dual D-type flip-flop with set and reset; positive edge-trigger 1998 Apr 20 6 AC CHARACTERISTICS GND = 0V; tr = tf v 2.5ns; CL = 50pF; RL = 1KΩ SYMBOL PARAMETER WAVEFORM CONDITION LIMITS –40 to +85 °C LIMITS –40 to +125 °C UNIT VCC(V) MIN TYP1 MAX MIN MAX 1.2 – 70 – – – Propagation delay 2.0 – 24 44 – 56 tPHL/tPLH Propagation delay nCP to nQ, nQ Figures, 1, 3 2.7 – 18 28 – 41 ns nCP to nQ, nQ 3.0 to 3.6 – 132 26 – 33 4.5 to 5.5 – 9.53 17 – 23 1.2 – 90 – – – Propagation delay 2.0 – 31 46 – 58 tPHL/tPLH Propagation delay nSD to nQ, nQ Figures 2, 3 2.7 – 23 34 – 43 ns nSD to nQ, nQ 3.0 to 3.6 – 172 27 – 34 4.5 to 5.5 – 123 19 – 24 1.2 – 90 – – – Propagation delay 2.0 – 31 46 – 58 tPHL/tPLH Propagation delay nRD to nQ, nQ Figures 2, 3 2.7 – 23 34 – 43 ns nRD to nQ, nQ 3.0 to 3.6 – 172 27 – 34 4.5 to 5.5 – 123 19 – 24 2.0 34 10 – 41 – tW Clock pulse width Figure 1 2.7 25 8 – 30 – ns tW HIGH to LOW Figure 1 3.0 to 3.6 20 72 – 24 – ns 4.5 to 5.5 15 63 – 18 – 2.0 34 10 – 41 – tW Set or reset pulse Figure 2 2.7 25 8 – 30 – ns tW width LOW Figure 2 3.0 to 3.6 20 72 – 24 – ns 4.5 to 5.5 15 63 – 18 – 1.2 – 5 – – – Removal time 2.0 14 2 – 15 – trem Removal time set or reset Figure 2 2.7 10 1 – 11 – ns set or reset 3.0 to 3.6 8 12 – 9 – 4.5 to 5.5 6 13 – 7 – 1.2 – 10 – – – Set up time 2.0 22 4 – 26 – tsu Set-up time nD to nCP Figure 1 2.7 12 3 – 15 – ns nD to nCP 3.0 to 3.6 8 22 – 10 – 4.5 to 5.5 6 12 – 8 – 1.2 – –10 – – – Hold time 2.0 3 –2 – 3 – th Hold time nD to nCP Figure 1 2.7 3 –2 – 3 – ns nD to nCP 3.0 to 3.6 3 –22 – 3 – 4.5 to 5.5 3 –23 – 3 – 2.0 14 40 – 12 – f Maximum clock Figure 1 2.7 50 90 – 40 – MHz fmax pulse frequency Figure 1 3.0 to 3.6 60 1002 – 48 – MHz 4.5 to 5.5 70 1103 – 56 – NOTE: 1. Unless otherwise stated, all typical values are at Tamb = 25°C. 2. Typical value measured at VCC = 3.3V. 3. Typical value measured at VCC = 5.0V. |
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