Logic IC (Logic Integrated Circuit) 内部由海量的晶体管组成精密的“电子开关网络”。这些开关根据预设的规则（真值表）导通或闭合，接收到输入的电平信号后，立刻输出对应的结果，以此实现加法、比较、判断等功能。逻辑芯片是半导体产业中市场规模最大的一类，2025年全球销售额已达到3019亿美元。
| 型号 | 品牌 | Pin2PIN | 参数 | 封装 |
|---|---|---|---|---|
| EM74HC126PW | ENERGYMATH | 74HC126PW, SN74HC126PW, | Quad buffer/line driver; 3-state | TSSOP14L |
| EM74HC126D | ENERGYMATH | 74HC126D, SN74HC126D, | Quad buffer/line driver; 3-state | SOP-14L |
| EM74HC125PW | ENERGYMATH | 74HC125PW, SN74HC125PW, RS4G125XQ | Quad buffer/line driver; 3-state | TSSOP14L |
| EM74HC125D | ENERGYMATH | 74HC125D, SN74HC125D, RS4G125XP | Quad buffer/line driver; 3-state | SOP-14L |
| EM74HC11PW | ENERGYMATH | 74HC11PW, SN74HC11PW, | Triple 3-input AND gate | TSSOP14L |
| EM74HC11D | ENERGYMATH | 74HC11D, SN74HC11D, | Triple 3-input AND gate | SOP-14L |
| EM74HC10PW | ENERGYMATH | 74HC10PW, SN74HC10PW, | Triple 3-input NAND gate | TSSOP14L |
| EM74HC10D | ENERGYMATH | 74HC10D, SN74HC10D, | Triple 3-input NAND gate | SOP-14L |
| EM74HC08PW | ENERGYMATH | 74HC08PW, SN74HC08PW, RS4G08XQ | Quad 2-input AND gate | TSSOP14L |
| EM74HC08D | ENERGYMATH | 74HC08D, SN74HC08D, RS4G08XP | Quad 2-input AND gate | SOP-14L |
| EM74HC07PW | ENERGYMATH | Hex buffer; open-drain | TSSOP14L | |
| EM74HC07D | ENERGYMATH | Hex buffer; open-drain | SOP-14L | |
| EM74HC05PW | ENERGYMATH | 74HC05PW, SN74HC05PW, | Hex inverter; open-drain | TSSOP14L |
| EM74HC05D | ENERGYMATH | 74HC05D, SN74HC05D, | Hex inverter; open-drain | SOP-14L |
| EM74HC04PW | ENERGYMATH | 74HC04PW, SN74HC04PW, | Hex inverter | TSSOP14L |
| EM74HC04D | ENERGYMATH | 74HC04D, SN74HC04D, | Hex inverter | SOP-14L |
| EM74HC03PW | ENERGYMATH | 74HC03PW, SN74HC03PW, | Quad 2-input NAND gate; open-drain | TSSOP14L |
| EM74HC03D | ENERGYMATH | 74HC03D, SN74HC03D, | Quad 2-input NAND gate; open-drain | SOP-14L |
| EM74HC02PW | ENERGYMATH | 74HC02PW, SN74HC02PW, | Quad 2-input NOR gate | TSSOP14L |
| EM74HC02D | ENERGYMATH | 74HC02D, SN74HC02D, | Quad 2-input NOR gate | SOP-14L |