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HD74HC148 Datasheet(PDF) 4 Page - Hitachi Semiconductor |
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HD74HC148 Datasheet(HTML) 4 Page - Hitachi Semiconductor |
4 / 8 page HD74HC148 4 AC Characteristics (C L = 50 pF, Input tr = tf = 6 ns) Ta = 25 °C Ta = –40 to +85 °C Item Symbol V CC (V) Min Typ Max Min Max Unit Test Conditions Propagation delay t PLH 2.0 — — 230 — 290 ns 0 - 7 to A 0 - A2 time t PHL 4.5 — 15 46 — 58 6.0 — — 39 — 49 t PLH 2.0 — — 250 — 315 ns 0 - 7 to EO t PHL 4.5 — 16 50 — 63 6.0 — — 43 — 54 t PLH 2.0 — — 270 — 340 ns 0 - 7 to GS t PHL 4.5 — 18 54 — 68 6.0 — — 46 — 58 t PLH 2.0 — — 230 — 290 ns EI to A 0 - A2 t PHL 4.5 — 12 46 — 58 6.0 — — 39 — 49 t PLH 2.0 — — 250 — 315 ns EI to GS t PHL 4.5 — 12 50 — 63 6.0 — — 43 — 54 t PLH 2.0 — — 270 — 340 ns EI to EO t PHL 4.5 — 12 54 — 68 6.0 — — 46 — 58 Output rise/fall t TLH 2.0 — — 75 — 90 ns time t THL 4.5 — 5 15 — 19 6.0 — — 13 — 16 Input capacitance Cin — — 5 10 — 10 pF |
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