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 |
|---|---|---|---|---|
| EM74HC7001D | ENERGYMATH | SOP-14L | SN74HC7001D, | Quad 2-Input AND Gates with Schmitt-Trigger Inputs |
| EM74HC640PW | ENERGYMATH | TSSOP20L | SN74HC640PW, | Octal Bus Transceivers With 3-State Outputs |
| EM74HC640D | ENERGYMATH | SOP-20L | SN74HC640DW, | Octal Bus Transceivers With 3-State Outputs |
| EM74HC597PW | ENERGYMATH | TSSOP16L | 74HC597PW | 8-bit shift register with input flip-flops |
| EM74HC597D | ENERGYMATH | SOP-16L | 74HC597D, CD74HC597D, | 8-bit shift register with input flip-flops |
| EM74HC595APW | ENERGYMATH | TSSOP16L | 74HC595PW, SN74HC595PW, RS595XTSS16-G | 8-bit serial-in, serial or parallel-out shift register with output latches; 3-state |
| EM74HC595AD | ENERGYMATH | SOP-16L | 74HC595D, SN74HC595D, RS595XS16-G | 8-bit serial-in, serial or parallel-out shift register with output latches; 3-state |
| EL74HC595D | ENERGYMATH | SOP-16L | 74HC595D, SN74HC595D, RS595XS16-G | 8-bit serial-in, serial or parallel-out shift register with output latches; 3-state |
| EM74HC594PW | ENERGYMATH | TSSOP16L | 74HC594PW | 8-bit shift register with output register |
| EM74HC594D | ENERGYMATH | SOP-16L | 74HC594D, SN74HC594D, | 8-bit shift register with output register |
| EM74HC541PW | ENERGYMATH | TSSOP20L | 74HC541PW, SN74HC541PW, | Octal buffer/line driver; 3-state |
| EM74HC541D | ENERGYMATH | SOP-20L | 74HC541D, SN74HC541DW, | Octal buffer/line driver; 3-state |
| EM74HC540PW | ENERGYMATH | TSSOP20L | 74HC540PW, SN74HC540PW, | Octal buffer/line driver; 3-state; inverting |
| EM74HC540D | ENERGYMATH | SOP-20L | 74HC540D, SN74HC540DW, | Octal buffer/line driver; 3-state; inverting |
| EM74HC4094PW | ENERGYMATH | TSSOP16L | 74HC4094PW, CD74HC4094PW, | 8-stage shift-and-store bus register |
| EM74HC4094D | ENERGYMATH | SOP-16L | 74HC4094D, CD74HC4094D, | 8-stage shift-and-store bus register |
| EM74HC4075D | ENERGYMATH | SOP-14L | 74HC4075D, SN74HC4075D, | Triple 3-input OR gate |
| EM74HC4075PW | ENERGYMATH | TSSOP14L | 74HC4075PW, SN74HC4075PW, | Triple 3-input OR gate |
| EM74HC4002PW | ENERGYMATH | TSSOP14L | 74HC4002PW, CD74HC4002PW, | Dual 4-input NOR gate |
| EM74HC4002D | ENERGYMATH | SOP-14L | 74HC4002D, CD74HC4002D, | Dual 4-input NOR gate |