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HD74HC257 Datasheet(PDF) 4 Page - Hitachi Semiconductor |
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HD74HC257 Datasheet(HTML) 4 Page - Hitachi Semiconductor |
4 / 9 page HD74HC257 4 DC Characteristics Ta = 25 °C Ta = –40 to +85 °C Item Symbol V CC (V) Min Typ Max Min Max Unit Test Conditions Input voltage V IH 2.0 1.5 — — 1.5 — V 4.5 3.15 — — 3.15 — 6.0 4.2 — — 4.2 — V IL 2.0 — — 0.5 — 0.5 V 4.5 — — 1.35 — 1.35 6.0 — — 1.8 — 1.8 Output voltage V OH 2.0 1.9 2.0 — 1.9 — V Vin = V IH or VIL I OH = –20 µA 4.5 4.4 4.5 — 4.4 — 6.0 5.9 6.0 — 5.9 — 4.5 4.18 — — 4.13 — I OH = –6 mA 6.0 5.68 — — 5.63 — I OH = –7.8 mA V OL 2.0 — 0.0 0.1 — 0.1 V Vin = V IH or VIL I OL = 20 µA 4.5 — 0.0 0.1 — 0.1 6.0 — 0.0 0.1 — 0.1 4.5 — — 0.26 — 0.33 I OL = 6 mA 6.0 — — 0.26 — 0.33 I OL = 7.8 mA Off-state output current I OZ 6.0 — — ±0.5 — ±5.0 µA Vin = V IH or VIL, Vout = V CC or GND Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = V CC or GND Quiescent supply current I CC 6.0 — — 4.0 — 40 µA Vin = V CC or GND, Iout = 0 µA |
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