Why the supply current matters on a 555
The TLC555IDR is a LinCMOS™ 555-type timer/oscillator that draws just 360 µA typical supply current — roughly one-tenth the quiescent draw of a bipolar 555 at the same voltage. On a battery-powered board that keeps a timer running in idle, that difference extends standby life from days to weeks. It oscillates up to 2.1 MHz, covering the common timing and pulse-generation range for microcontroller clock recovery, PWM generation, and missing-pulse detection circuits.