A low-power pin-for-pin replacement for the 555 but requiring only about one fiftieth of the supply current. The device has extremely low trigger threshold & reset current typically 20p A & a very wide supply voltage range 2V to 18V. Supply decoupling close to the device is not required. The outputs are fully CMOS TTL & MOS compatible. Choose high values for timing resistors to keep supply currents low & low values for capacitance which should be low leakage types not ceramic. Specifications Supply voltage 2V to 18 V Supply current 170micro A at 5V 360micro A at 15 V Threshold current VDD 5V10p A Trigger current VDD 5V10p A Reset current VDD 5 Vplusmn 10p A Reset voltage level 0.7 V Output sink current 100m A max Output source current 10m A max Max frequencyin astable mode 2.1 M Hz