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74AHC138 Scheda tecnica(PDF) 8 Page - NXP Semiconductors |
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74AHC138 Scheda tecnica(HTML) 8 Page - NXP Semiconductors |
8 / 16 page 1999 Sep 27 8 Philips Semiconductors Product specification 3-to-8 line decoder/demultiplexer; inverting 74AHC138; 74AHCT138 AC CHARACTERISTICS Type 74AHC138 GND = 0 V; tr =tf ≤ 3.0 ns. Notes 1. Typical values at VCC = 3.3 V. 2. Typical values at VCC = 5.0 V. SYMBOL PARAMETER TEST CONDITIONS Tamb (°C) UNIT WAVEFORMS CL 25 −40 to +85 −40 to +125 MIN. TYP. MAX. MIN. MAX. MIN. MAX. VCC = 3.0 to 3.6 V; note 1 tPHL/tPLH propagation delay An to Yn see Figs 5 and 7 15 pF − 6.0 11.4 1.0 13.0 1.0 14.5 ns propagation delay E3 to Yn − 5.8 12.8 1.0 15.0 1.0 16.0 ns propagation delay E1, E2 to Yn see Figs 6 and 7 − 5.7 11.4 1.0 13.5 1.0 14.5 ns propagation delay An to Yn see Figs 5 and 7 50 pF − 8.6 15.8 1.0 18.0 1.0 20.0 ns propagation delay E3 to Yn − 8.2 16.3 1.0 18.5 1.0 20.5 ns propagation delay E1, E2 to Yn see Figs 6 and 7 − 8.2 14.9 1.0 17.0 1.0 19.0 ns VCC = 4.5 to 5.5 V; note 2 tPHL/tPLH propagation delay An to Yn see Figs 5 and 7 15 pF − 4.4 8.1 1.0 9.5 1.0 10.5 ns propagation delay E3 to Yn − 4.2 8.1 1.0 9.5 1.0 10.5 ns propagation delay E1, E2 to Yn see Figs 6 and 7 − 4.2 8.1 1.0 9.5 1.0 10.5 ns propagation delay An to Yn see Figs 5 and 7 50 pF − 6.3 10.1 1.0 11.5 1.0 13.0 ns propagation delay E3 to Yn − 6.0 10.1 1.0 11.5 1.0 13.0 ns propagation delay E1, E2 to Yn see Figs 6 and 7 − 6.0 10.1 1.0 11.5 1.0 13.0 ns |
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