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HD74LS155P データシート(PDF) 4 Page - Renesas Technology Corp |
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HD74LS155P データシート(HTML) 4 Page - Renesas Technology Corp |
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4 / 7 page ![]() HD74LS155 Rev.2.00, Feb.18.2005, page 4 of 6 Switching Characteristics (VCC = 5 V, Ta = 25°C) Item Symbol Inputs Output Levels of logic min. typ. max. Unit Condition tPLH — 10 15 ns tPHL A, B, 2C 1G or 2G Y 2 — 19 30 ns tPLH — 17 26 ns tPHL A or B Y 3 — 19 30 ns tPLH — 18 27 ns Propagation delay time tPHL 1C Y 3 — 18 27 ns CL = 15 pF, RL = 2 k Ω Testing Method Test Circuit 4.5V 1Y0 Load circuit 1 Output VCC RL CL Input P.G. Zout = 50 Ω 1C B A 2C 2G 1G 1Y2 1Y3 2Y0 2Y1 2Y2 2Y3 1Y1 Same as Load Circuit 1. Output Same as Load Circuit 1. Output Same as Load Circuit 1. Output Same as Load Circuit 1. Output Same as Load Circuit 1. Output Same as Load Circuit 1. Output Same as Load Circuit 1. Output Notes: 1. CL includes probe and jig capacitance. 2. All diodes are 1S2074(H). |
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