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6.6 In the style of Table 6-4, write the truth table for the logic function performed inside the 74x138 symbol outline.

6.6 In the style of Table 6-4, write the truth table for the logic function performed inside the 74x138 symbol outline.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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- **6.6** In the style of [Table 6-4](#), write the truth table for the logic function performed *inside* the 74x138 symbol outline. **Explanation:** This instruction is asking to create a truth table based on a hypothetical Table 6-4, which is referenced by a link. The logic function mentioned is related to the 74x138 integrated circuit, commonly a 3-to-8 line decoder/demultiplexer. The truth table should reflect the inputs and corresponding outputs for this specific logic function within the context given by Table 6-4.
Transcribed Image Text:- **6.6** In the style of [Table 6-4](#), write the truth table for the logic function performed *inside* the 74x138 symbol outline. **Explanation:** This instruction is asking to create a truth table based on a hypothetical Table 6-4, which is referenced by a link. The logic function mentioned is related to the 74x138 integrated circuit, commonly a 3-to-8 line decoder/demultiplexer. The truth table should reflect the inputs and corresponding outputs for this specific logic function within the context given by Table 6-4.
**Table 6-4: Truth Table for a 74x138 3-to-8 Decoder** This table represents the truth table for a 74x138 3-to-8 decoder, which translates a 3-bit binary input into one of eight outputs. ### Inputs: - **G1, G2A_L, G2B_L**: These are the enable inputs for the decoder. "0" typically means disabled when active low (indicated with "_L"), and "1" means enabled. - **C, B, A**: These are the address inputs used to select one of the outputs. ### Outputs: - **Y7_L, Y6_L, Y5_L, Y4_L, Y3_L, Y2_L, Y1_L, Y0_L**: These are the eight outputs of the decoder. An output is "0" (active low) when selected, indicating which output line is active. | G1 | G2A_L | G2B_L | C | B | A | Y7_L | Y6_L | Y5_L | Y4_L | Y3_L | Y2_L | Y1_L | Y0_L | |----|-------|-------|---|---|---|------|------|------|------|------|------|------|------| | 0 | x | x | x | x | x | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | x | 1 | x | x | x | x | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | x | x | 1 | x | x | x | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | | 1 | 0 | 0 | 0 | 0 | 1 |
Transcribed Image Text:**Table 6-4: Truth Table for a 74x138 3-to-8 Decoder** This table represents the truth table for a 74x138 3-to-8 decoder, which translates a 3-bit binary input into one of eight outputs. ### Inputs: - **G1, G2A_L, G2B_L**: These are the enable inputs for the decoder. "0" typically means disabled when active low (indicated with "_L"), and "1" means enabled. - **C, B, A**: These are the address inputs used to select one of the outputs. ### Outputs: - **Y7_L, Y6_L, Y5_L, Y4_L, Y3_L, Y2_L, Y1_L, Y0_L**: These are the eight outputs of the decoder. An output is "0" (active low) when selected, indicating which output line is active. | G1 | G2A_L | G2B_L | C | B | A | Y7_L | Y6_L | Y5_L | Y4_L | Y3_L | Y2_L | Y1_L | Y0_L | |----|-------|-------|---|---|---|------|------|------|------|------|------|------|------| | 0 | x | x | x | x | x | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | x | 1 | x | x | x | x | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | x | x | 1 | x | x | x | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | | 1 | 0 | 0 | 0 | 0 | 1 |
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