XR-L555 Datasheet Micropower Timing Circuit

Manufacturer: Exar (now MaxLinear)

Datasheet Details

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

XR·L555 Micropower Timing Circuit GENERAL.

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 time delay is controlled by one external resistor and one capacitor. For astable operation as an oscillator the free-running frequency and the duty cycle are accurately controlled with two external resistors and one capacitor as shown in Figu.

Part Number	Description
XR-L556	Micropower Dual Timer
XR-082	Dual Bipolar JFET Operational Amplifier
XR-083	Dual Bipolar JFET Operational Amplifier
XR-084	Quad Bipolar JFET Operational Amplifier
XR-094	Quad Programmable Bipolar JFET Operational Amplifiers
XR-095	Quad Programmable Bipolar JFET Operational Amplifiers
XR-096	Quad Programmable Bipolar JFET Operational Amplifier
XR-1000	General Purpose Low Pass Filter
XR-1001	General Purpose Low Pass Filter
XR-1002	General Purpose Low Pass Filter