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74HCT238N 데이터시트(PDF) 6 Page - NXP Semiconductors |
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74HCT238N 데이터시트(HTML) 6 Page - NXP Semiconductors |
6 / 7 page December 1990 6 Philips Semiconductors Product specification 3-to-8 line decoder/demultiplexer 74HC/HCT238 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI 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. AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr =tf = 6 ns; CL = 50 pF INPUT UNIT LOAD COEFFICIENT An En E3 0.70 0.40 1.45 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 propagation delay An to Yn 21 35 44 53 ns 4.5 Fig.6 tPLH propagation delay An to Yn 17 35 44 53 ns 4.5 Fig.6 tPHL propagation delay E3 to Yn 22 37 46 56 ns 4.5 Fig.6 tPLH propagation delay E3 to Yn 18 37 46 56 ns 4.5 Fig.6 tPHL propagation delay En to Yn 21 35 44 53 ns 4.5 Fig.7 tPLH propagation delay En to Yn 18 35 44 53 ns 4.5 Fig.7 tTHL/ tTLH output transition time 7 15 19 22 ns 4.5 Figs 6 and 7 |
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