LM3905 Datasheet | National Semiconductor

.. LM122 LM322 LM3905 Precision Timers February 1995 LM122 LM322 LM3905 Precision Timers General Description The LM122 series are precision timers that offer great versatility with high accuracy They operate with unregulated supplies from 4 5V to 40V while maintaining constant timing periods from microseconds to hours Internal logic and regulator circuits plement the basic timing function enabling the LM122 series to operate in many different applications with a minimum of external ponents The output of the timer is a floating transistor with built in current limiting It can drive either ground referred or supply referred loads up to 40V and 50 mA The floating...