XR-L555 Datasheet | Exar

XR- L555 Micropower Timing Circuit GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM The XR-L555 is a stable micropower controller capable of producing accurate timing pulses. It is a direct replacement for the popular 555-timer for applications requiring very low power dissipation. The XR-L555 has approximately 1/15th the power dissipation of the standard 555-timer and can operate down to 2.7 volts without sacrificing such key Features as timing accuracy and frequency stability. At 5-volt operation, typical power dissipation of the XR-L555 is 900 microwatts. The circuit contains independent control terminals for triggering or resetting if desired. In the monostable mode of operation, the...