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HD74HC161 Datasheet(PDF) 4 Page - Hitachi Semiconductor |
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HD74HC161 Datasheet(HTML) 4 Page - Hitachi Semiconductor |
4 / 16 page HD74HC160/HD74HC161/HD74HC162/HD74HC163 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 Maximum clock f max 2.0 — — 5 — 4 MHz frequency 4.5 — — 25 — 20 6.0 — — 29 — 23 Propagation delay t PLH 2.0 — — 160 — 200 ns Clock to Q time t PHL 4.5 — 18 32 — 40 6.0 — — 27 — 34 2.0 — — 225 — 280 ns Clear to Q 4.5 — 23 45 — 56 (HC160, HC161 only) 6.0 — — 38 — 48 2.0 — — 150 — 190 ns Enable T to Ripple Carry output 4.5 — 15 30 — 38 6.0 — — 26 — 33 2.0 — — 200 — 250 ns Clock to Ripple carry output 4.5 — 16 40 — 50 6.0 — — 34 — 43 Setup time t su 2.0 125 — — 156 — ns Data to Clock 4.5 25 9 — 31 — 6.0 21 — — 26 — 2.0 125 — — 156 — Load to Clock 4.5 25 15 — 31 — 6.0 21 — — 26 — 2.0 125 — — 156 — Clear to Clock 4.5 25 — — 31 — (HC162, HC163 only) 6.0 21 — — 26 — Hold time t h 2.0 0 — — 0 — ns 4.5 0 –7 — 0 — 6.0 0 — — 0 — Removal time t rem 2.0 100 — — 125 — ns 4.5 20 7 — 25 — 6.0 17 — — 21 — |
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