These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a-stable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. -40 °C ..105 °C. https://elecena.pl/product/23739603/na555d-timer-ic-type-555-extended-temp-so-8 2023-07-06 https://elecena.pl/product/23739603/na555d-timer-ic-type-555-extended-temp-so-8 2026-03-06