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HM628512LTT-5 Datasheet(PDF) 7 Page - Hitachi Metals, Ltd |
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HM628512LTT-5 Datasheet(HTML) 7 Page - Hitachi Metals, Ltd |
7 / 15 page HM628512 Series 7 AC Characteristics (Ta = 0 to +70 °C, V CC = 5 V ± 10%, unless otherwise noted.) Test Conditions • Input pulse levels: 0.8 V to 2.4 V • Input rise and fall time: 5 ns • Input and output timing reference levels: 1.5 V • Output load: 1 TTL Gate + C L (100 pF) (HM628512-7A/7) 1 TTL Gate + C L (50 pF) (HM628512-5) (Including scope & jig) Read Cycle HM628512 -5 -7A -7 Parameter Symbol Min Max Min Max Min Max Unit Notes Read cycle time t RC 55 — 65 — 70 — ns Address access time t AA —55 — 60—70 ns Chip select access time t CO —55 — 65—70 ns Output enable to output valid t OE —25 — 30—35 ns Chip selection to output in low-Z t LZ 10 — 10 — 10 — ns 2 Output enable to output in low-Z t OLZ 5— 5— 5— ns 2 Chip deselection to output in high-Z t HZ 0 20 0 20 0 25 ns 1, 2 Output disable to output in high-Z t OHZ 0 20 0 20 0 25 ns 1, 2 Output hold from address change t OH 10 — 10 — 10 — ns Notes: 1. t HZ and t OHZ are defined as the time at which the outputs achieve the open circuit conditions and are not referred to output voltage levels. 2. This parameter is sampled and not 100% tested. |
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