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 |
|---|---|---|---|---|
| EM74LV1T126GW | ENERGYMATH | 74LV1T126GW, SN74LV1T126DCK, | Single supply translating buffer (3-state) | SOT353 |
| EM74LV1T126GV | ENERGYMATH | 74LV1T126GV, SN74LV1T126DBV, | Single supply translating buffer (3-state) | SOT23-5L |
| EM74LV1T126GX | ENERGYMATH | 74LV1T126GX | Single supply translating buffer (3-state) | DFN0.8x0.8-4L |
| EM74HCT86PW | ENERGYMATH | 74HCT86PW, SN74HCT86PW, RS4GT86XQ | Quad 2-input EXCLUSIVE-OR gate; TTL enabled; TTL input | TSSOP14L |
| EM74HCT86D | ENERGYMATH | 74HCT86D, SN74HCT86D, RS4GT86XP | Quad 2-input EXCLUSIVE-OR gate; TTL enabled; TTL input | SOP-14L |
| EM74HCT7541PW | ENERGYMATH | 74HCT7541PW | Octal Schmitt trigger buffer/line driver; 3-state; TTL-enabled | TSSOP20L |
| EM74HCT7541D | ENERGYMATH | 74HCT7541D | Octal Schmitt trigger buffer/line driver; 3-state; TTL-enabled | SOP-20L |
| EM74HCT7540PW | ENERGYMATH | 74HCT7540PW | Octal Schmitt trigger buffer/line driver; 3-state; inverting; TTL-enabled | TSSOP20L |
| EM74HCT7540D | ENERGYMATH | 74HCT7540D | Octal Schmitt trigger buffer/line driver; 3-state; inverting; TTL-enabled | SOP-20L |
| EM74HCT74PW | ENERGYMATH | 74HCT74PW, SN74HCT74PW, RS74HCT74XQ | Dual D-type flip-flop with set and reset; positive-edge trigger; TTL input | TSSOP14L |
| EM74HCT74D | ENERGYMATH | 74HCT74D, SN74HCT74D, RS74HCT74XP | Dual D-type flip-flop with set and reset; positive-edge trigger; TTL input | SOP-14L |
| EM74HCT7266PW | ENERGYMATH | Quad 2-Input XNOR Gates; TTL input | TSSOP14L | |
| EM74HCT7266D | ENERGYMATH | SN74HCT7266D, | Quad 2-Input XNOR Gates; TTL input | SOP-14L |
| EM74HCT7032PW | ENERGYMATH | Quad 2-Input OR Gates with Schmitt-Trigger Inputs; TTL input | TSSOP14L | |
| EM74HCT7032D | ENERGYMATH | SN74HCT7032D, | Quad 2-Input OR Gates with Schmitt-Trigger Inputs; TTL input | SOP-14L |
| EM74HCT7002PW | ENERGYMATH | SN74HCT7002PW, | Quad 2-Input NOR Gates with Schmitt-Trigger Inputs; TTL input | TSSOP14L |
| EM74HCT7002D | ENERGYMATH | SN74HCT7002D, | Quad 2-Input NOR Gates with Schmitt-Trigger Inputs; TTL input | SOP-14L |
| EM74HCT7001PW | ENERGYMATH | Quad 2-Input AND Gates with Schmitt-Trigger Inputs; TTL input | TSSOP14L | |
| EM74HCT7001D | ENERGYMATH | SN74HCT7001D, | Quad 2-Input AND Gates with Schmitt-Trigger Inputs; TTL input | SOP-14L |
| EM74HCT597PW | ENERGYMATH | 74HCT597PW | 8-bit shift register with input flip-flops; TTL-enabled | TSSOP16L |