| 参数 电路 | 电源电压范围 | 输入电平 | 输出电平 | ||
| V(V) | VIH(V) | VIL(V) | VOH(V) | VOL(V) | |
| LSTTL | 4.5~5.5 | 2 | 0.8 | 2.7 | 0.4 |
| CMOS | 3~18(取Vcc=5) | 3.5 | 1.5 | 4.5 | 0.5 |
| HCMOS | 2~6 | 3.5 | 1 | 5.2 | 0.4 |
| MSP430 | 1.83.6 | 0.8Vcc | 0.2Vcc | Vcc-0.6 | 0.6 |
| ALVT系列 | 3.3或2.5 | 1.7 | 0.8 | 2.0 | 0.2~0.55 |
| LVC系列 | 1.65~5.5 | 0.7Vcc | 0.3Vcc | 2.7~5.5 | 0.1~0.55 |
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