ZHCSMS9J September 1973 – February 2025 NA555 , NE555 , SA555 , SE555
PRODUCTION DATA
請參考 PDF 數據表獲取器件具體的封裝圖。
Table 6-1 shows the device truth table. For a valid reset voltage condition, use an external pullup resistor to VCC (if using the RESET functionality), or short the RESET pin directly to VCC (if the RESET functionality is not used).
| RESET VOLTAGE(1) | TRIGGER VOLTAGE(1) | THRESHOLD VOLTAGE(1) | OUTPUT | DISCHARGE SWITCH |
|---|---|---|---|---|
| LOW | Irrelevant | Irrelevant | Low | On |
| > MAX | < 1/3 × VCC | Irrelevant(2) | High | Off |
| > MAX | > 1/3 × VCC | > 2/3 × VCC | Low | On |
| > MAX | > 1/3 × VCC | < 2/3 × VCC | As previously established | |