2.3 Приклади формулярів завдань для дослідницької частини роботи
Таблиця 2.3 – Мікросхема 74154
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4x16 decoder / demultiplexer |
74154 | |
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4-to-16 Decoder/Demultiplexer truth table:
_ _ Inputs | Outputs G1 G2 | D C B A | 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ------|---------|-------------------------------------- 0 0 | 0 0 0 0 | 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 | 0 0 0 1 | 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 | 0 0 1 0 | 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 | 0 0 1 1 | 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 | 0 1 0 0 | 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 | 0 1 0 1 | 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 0 | 0 1 1 0 | 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 0 0 | 0 1 1 1 | 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 0 | 1 0 0 0 | 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 0 | 1 0 0 1 | 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 0 0 | 1 0 1 0 | 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0 0 | 1 0 1 1 | 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 0 0 | 1 1 0 0 | 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 0 0 | 1 1 0 1 | 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 0 0 | 1 1 1 0 | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 0 | 1 1 1 1 | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 | X X X X | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 | X X X X | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | X X X X | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | |
Таблиця 2.4 – Мікросхема 74139
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Dual 2x4 decoder / demultiplexer |
74139 | |
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2-to-4 decoder/demultiplexer truth table:
_ Select | Outputs Enable G B A | Y0 Y1 Y2 Y3 -------------------|--------------- 1 X X | 1 1 1 1 0 0 0 | 0 1 1 1 0 0 1 | 1 0 1 1 0 1 0 | 1 1 0 1 0 1 1 | 1 1 1 0 | |
Таблиця 2.5 – Мікросхема 74155
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Dual 2x4 decoder / demultiplexer |
74155 | |
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Decoder/Demultiplexer truth table:
Select | Strobe | Data | Outputs A B | G' | C | Y0 Y1 Y2 Y3 -------|--------|------|----------------- X X | 1 | X | 1 1 1 1 0 0 | 0 | 1 | 0 1 1 1 0 1 | 0 | 1 | 1 0 1 1 1 0 | 0 | 1 | 1 1 0 1 1 1 | 0 | 1 | 1 1 1 0 X X | X | 0 | 1 1 1 1 | |
Таблиця 2.6 – Мікросхема 74156
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Dual 2x4 decoder / demultiplexer |
74156 | |
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This device contains two 2-to-4 decoders/demultipexers. For this IC, we recommend the LS-OC model for realistic performance.
Select | Strobe | Data | Outputs A B | G' | C | Y0 Y1 Y2 Y3 -------|--------|------|---------------- X X | 1 | X | 1 1 1 1 0 0 | 0 | 1 | 0 1 1 1 0 1 | 0 | 1 | 1 0 1 1 1 0 | 0 | 1 | 1 1 0 1 1 1 | 0 | 1 | 1 1 1 0 X X | X | 0 | 1 1 1 1
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Таблиця 2.7 – Мікросхема 4512
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8x1 multiplexer with 3-state out |
4512 | |
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This device is a 8-input multiplexer with 3-state outputs.
_ _ Select Data EO E C B A I0 I1 I2 I3 I4 I5 I6 I7| O -------|---------|-------------------------------|----- 0 1 | X X X | X X X X X X X X | 0 0 0 | 0 0 0 | 0 X X X X X X X | 0 0 0 | 0 0 0 | 1 X X X X X X X | 1 0 0 | 0 0 1 | X 0 X X X X X X | 0 0 0 | 0 0 1 | X 1 X X X X X X | 1 0 0 | 0 1 0 | X X 0 X X X X X | 0 0 0 | 0 1 0 | X X 1 X X X X X | 1 0 0 | 0 1 1 | X X X 0 X X X X | 0 0 0 | 0 1 1 | X X X 1 X X X X | 1 0 0 | 1 0 0 | X X X X 0 X X X | 0 0 0 | 1 0 0 | X X X X 1 X X X | 1 0 0 | 1 0 1 | X X X X X 0 X X | 0 0 0 | 1 0 1 | X X X X X 1 X X | 1 0 0 | 1 1 0 | X X X X X X 0 X | 0 0 0 | 1 1 0 | X X X X X X 1 X | 1 0 0 | 1 1 1 | X X X X X X X 0 | 0 0 0 | 1 1 1 | X X X X X X X 1 | 1 1 X | X X X | X X X X X X X X | Z __ EO = Output Enable (Active-low) _ E = Enable input (Active-low)
Z = High impedance | |
Таблиця 2.8 – Мікросхема 4019
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Quad 2x1 multiplexer |
4019 | |
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This device contains four 2-input multiplexers.
SELECT INPUTS OUTPUT Sa Sb A0 B0 | O0 ---------------|------ L L X X | L H L L X | L H L H X | H L H X L | L L H X H | H H H H X | H H H X H | H H H L L | L | |
