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 | 制造商 | 封装 | Pin2PIN | 参数 |
|---|---|---|---|---|
| EM74AUP1G132GS | ENERGYMATH | DFN1x1-6L | 74AUP1G132GS, SN74AUP1G132DSF, | Low-power 2-input NAND Schmitt trigger |
| EM74AUP1G132GX | ENERGYMATH | DFN0.8x0.8-4L | 74AUP1G132GX, SN74AUP1G132DPW, | Low-power 2-input NAND Schmitt trigger |
| EM74AUP1G08GW | ENERGYMATH | SOT353 | 74AUP1G08GW, SN74AUP1G08DCK, | Low-power 2-input AND gate |
| EM74AUP1G08GM | ENERGYMATH | DFN1x1.45-6L | 74AUP1G08GM, SN74AUP1G08DRY, | Low-power 2-input AND gate |
| EM74AUP1G08GS | ENERGYMATH | DFN1x1-6L | 74AUP1G08GS, SN74AUP1G08DSF, | Low-power 2-input AND gate |
| EM74AUP1G08GX | ENERGYMATH | DFN0.8x0.8-4L | 74AUP1G08GX, SN74AUP1G08DPW, | Low-power 2-input AND gate |
| EM74AUP1G373GW | ENERGYMATH | SOT363 | 74AUP1G373GW, SN74AUP1G373DCK, | Low-power D-type transparent latch; 3-state |
| EM74AUP1G373GM | ENERGYMATH | DFN1x1.45-6L | 74AUP1G373GM, SN74AUP1G373DRY, | Low-power D-type transparent latch; 4-state |
| EM74AUP1G373GS | ENERGYMATH | DFN1x1-6L | 74AUP1G373GS, SN74AUP1G373DSF, | Low-power D-type transparent latch; 5-state |
| EM74LVC240AD | ENERGYMATH | SOP-20L | 74LVC240AD, SN74LVC240ADW, RS240XS20 | Octal buffer/line driver with 5 V tolerant inputs/outputs; inverting; 3-state |
| EM74LVC240APW | ENERGYMATH | TSSOP-20L | 74LVC240APW, SN74LVC240APW, RS240XTSS20 | Octal buffer/line driver with 5 V tolerant inputs/outputs; inverting; 3-state |
| EM74LVC244AD | ENERGYMATH | SOP-20L | 74LVC244AD, SN74LVC244ADW, RS244YS20 | Octal buffer/line driver; 3-state |
| EM74LVC244APW | ENERGYMATH | TSSOP-20L | 74LVC244APW, SN74LVC244APW, RS244YTSS20 | Octal buffer/line driver; 3-state |
| EM74LVCH244AD | ENERGYMATH | SOP-20L | 74LVCH244AD, SN74LVCH244ADW, | Octal buffer/line driver; 3-state; bus-hold |
| EM74LVCH244APW | ENERGYMATH | TSSOP-20L | 74LVCH244APW, SN74LVCH244APW, | Octal buffer/line driver; 3-state; bus-hold |
| EM74LVC245AD | ENERGYMATH | SOP-20L | 74LVC245AD, SN74LVC245ADW, RS245YS20 | Octal bus transceiver; 3-state |
| EM74LVC245APW | ENERGYMATH | TSSOP-20L | 74LVC245APW, SN74LVC245APW, RS245YTSS20 | Octal bus transceiver; 3-state |
| EM74LVCH245AD | ENERGYMATH | SOP-20L | 74LVCH245AD, SN74LVCH245ADW, | Octal bus transceiver; 3-state; bus-hold |
| EM74LVCH245APW | ENERGYMATH | TSSOP-20L | 74LVCH245APW, SN74LVCH245APW, | Octal bus transceiver; 3-state; bus-hold |
| EM74LVC540AD | ENERGYMATH | SOP-20L | 74LVC540AD, SN74LVC540ADW, RS540XTSS20-G | Octal Buffers/Drivers with 3-State Outputs |