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74HC20N Datenblatt(PDF) 6 Page - NXP Semiconductors |
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74HC20N Datenblatt(HTML) 6 Page - NXP Semiconductors |
6 / 6 page December 1990 6 Philips Semiconductors Product specification Dual 4-input NAND gate 74HC/HCT20 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. 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. AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr =tf = 6 ns; CL =50pF AC WAVEFORMS PACKAGE OUTLINES See “74HC/HCT/HCU/HCMOS Logic Package Outlines”. INPUT UNIT LOAD COEFFICIENT nA, nB, nC, nD 0.3 SYMBOL PARAMETER Tamb (°C) TEST CONDITIONS 74HCT UNIT VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay nA, nB, nC, nD to nY 16 28 35 42 ns 4.5 Fig.7 tTHL/ tTLH output transition time 7 15 19 22 ns 4.5 Fig.7 Fig.7 Waveforms showing the enable input (nA, nB, nC, nD) to output (nY) propagation delays and the output transition times. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. |
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