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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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74HC датащи(PDF) 8 Page - NXP Semiconductors |
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74HC датащи(HTML) 8 Page - NXP Semiconductors |
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8 / 19 page  March 1988 8 Philips Semiconductors HCMOS family characteristics FAMILY SPECIFICATIONS AC CHARACTERISTICS FOR 74HC GND = 0 V; tr =tf = 6 ns; CL = 50 pF AC CHARACTERISTICS FOR 74HCU GND = 0 V; tr =tf = 6 ns; CL = 50 pF AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr =tf = 6 ns; CL = 50 pF 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. tTHL/ tTLH output transition time standard outputs 19 75 95 110 ns 2.0 Figs 3 and 4 7 15 19 22 4.5 6 13 16 19 6.0 tTHL/ tTLH output transition time bus driver outputs 14 60 75 90 ns 2.0 Figs 3 and 4 5 12 15 18 4.5 4 10 13 15 6.0 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCU VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tTHL/ tTLH output transition time 19 75 95 110 ns 2.0 Fig.1 7 15 19 22 4.5 6 13 16 19 6.0 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. tTHL/ tTLH output transition time standard outputs 7 15 19 22 ns 4.5 Figs 8 and 9 tTHL/ tTLH output transition time bus driver outputs 5 12 15 18 ns 4.5 Figs 8 and 9 |
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