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74LVC574A データシート(PDF) 2 Page - ON Semiconductor |
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74LVC574A データシート(HTML) 2 Page - ON Semiconductor |
2 / 10 page 74LVC574A www.onsemi.com 2 Figure 1. Pinout: 20−Lead (Top View) 19 20 18 17 16 15 14 2 1 3456 7 VCC 13 8 12 9 11 10 O0 O1 O2 O3 O4 O5 O6 O7 CP OE D0 D1 D2 D3 D4 D5 D6 D7 GND Figure 2. Logic Diagram PIN NAMES Function Output Enable Input Clock Pulse Input Data Inputs 3−State Outputs Pins OE CP D0−D7 O0−O7 O0 D0 O1 D1 O2 D2 O3 D3 O4 D4 O5 D5 O6 D6 O7 D7 CP Q D CP Q D CP Q D CP Q D CP Q D CP Q D CP Q D CP Q D CP OE 11 1 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 TRUTH TABLE INPUTS OUTPUTS OPERATING MODE OE CP Dn On L L ↑ ↑ l h L H Load and Read Register L ↑ X NC Hold and Read Register H ↑ X Z Hold and Disable Outputs H H ↑ ↑ l h Z Z Load Internal Register and Disable Outputs H = High Voltage Level h = High Voltage Level One Setup Time Prior to the Low−to−High Clock Transition L = Low Voltage Level l = Low Voltage Level One Setup Time Prior to the Low−to−High Clock Transition NC = No Change, State Prior to Low−to−High Clock Transition X = High or Low Voltage Level and Transitions are Acceptable Z = High Impedance State ↑ = Low−to−High Transition ↑ = Not a Low−to−High Transition; For ICC Reasons, DO NOT FLOAT Inputs |
同様の部品番号 - 74LVC574A |
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同様の説明 - 74LVC574A |
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