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74HC14N Scheda tecnica(PDF) 5 Page - NXP Semiconductors |
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74HC14N Scheda tecnica(HTML) 5 Page - NXP Semiconductors |
5 / 8 page September 1993 5 Philips Semiconductors Product specification Hex inverting Schmitt trigger 74HC/HCT14 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are given below. Output capability: standard ICC category: SSI Note to HCT types The value of additional quiescent supply current ( ∆ICC) for a unit load of 1 is given in the family specifications. To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below. Transfer characteristics for 74HCT Voltages are referenced to GND (ground = 0 V) AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF INPUT UNIT LOAD COEFFICIENT nA 0.3 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCT VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. VT+ positive-going threshold 1.2 1.4 1.41 1.59 1.9 2.1 1.2 1.4 1.9 2.1 1.2 1.4 1.9 2.1 V 4.5 5.5 Figs 6 and 7 VT− negative-going threshold 0.5 0.6 0.85 0.99 1.2 1.4 0.5 0.6 1.2 1.4 0.5 0.6 1.2 1.4 V 4.5 5.5 Figs 6 and 7 VH hysteresis (VT+ −VT−) 0.4 0.4 0.56 0.60 − − 0.4 0.4 − − 0.4 0.4 − − V 4.5 5.5 Figs 6 and 7 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCT VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay nA, to nY 20 34 43 51 ns 4.5 Fig.8 tTHL/ tTLH output transition time 7 15 19 22 ns 4.5 Fig.8 |
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