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74HCT7540 データシート(PDF) 5 Page - NXP Semiconductors |
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74HCT7540 データシート(HTML) 5 Page - NXP Semiconductors |
5 / 7 page December 1990 5 Philips Semiconductors Product specification Octal Schmitt trigger buffer/line driver; 3-state; inverting 74HC/HCT7540 DC CHARACTERISTICS FOR 74HC For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are given below (not applicable for OEn inputs). Output capability: bus driver ICC category: MSI AC CHARACTERISTICS FOR 74HC GND = 0 V; tr =tf = 6 ns; CL = 50 pF TRANSFER CHARACTERISTICS FOR 74HC Voltages are referred to GND (ground = 0 V) SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HC VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay An to Yn 39 14 11 120 24 20 150 30 26 180 36 31 ns 2.0 4.5 6.0 Fig.8 tPZH/ tPZL 3-state output enable time OEn to Yn 41 15 12 150 30 26 190 38 33 225 45 38 ns 2.0 4.5 6.0 Fig.9 tPHZ/ tPLZ 3-state output disable time OEn to Yn 52 19 15 150 30 26 190 38 33 225 45 38 ns 2.0 4.5 6.0 Fig.9 tTHL/ tTLH output transition time 14 5 4 60 12 10 75 15 13 90 18 15 ns 2.0 4.5 6.0 Fig.8 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HC VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. VT+ positive-going threshold 1.50 3.15 4.20 1.50 3.15 4.20 1.50 3.15 4.20 V 2.0 4.5 6.0 Figs 6 and 7 VT− negative-going threshold 0.30 1.35 1.80 0.30 1.35 1.80 0.30 1.35 1.80 V 2.0 4.5 6.0 Figs 6 and 7 VH hysteresis (VT+ − VT−) 0.10 0.25 0.30 0.20 0.40 0.50 0.10 0.25 0.30 0.10 0.25 0.30 V 2.0 4.5 6.0 Figs 6 and 7 |
同様の部品番号 - 74HCT7540 |
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同様の説明 - 74HCT7540 |
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