National Semiconductor LM322
LM322 is specified from 0 C to a 70 C The LM3905 is identical to the LM122 series except that the boost and VADJ pin options are not available limiting minimum timing period to 1 ms Features Y Y Y Y Y Y Y Y Y Y Immune to changes in trigger voltage during timing interval Timing periods from microseconds to hours Internal logic reversal Immune to power supply ripple during the timing interval Operates from 4 5V to 40V supplies Input protected to g 40V Floating transistor output with internal current limiting Internal regulated reference Timing period can be voltage controlled TTL compatible...| Part No. | LM322 |
|---|---|
| Datasheet | LM322 Download |
| Manufacturer |  National Semiconductor |
| Description | Precision Timers |
| Buy | Stock & Price |
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 complement the basic timing function enabling the LM122 series to operate in many different applications with a minimum of external components 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 nature of this output makes it ideal for interfacing lamp or relay driving and signal conditioning where an open collector or emitter is required A ‘‘logic reverse’’ circuit can be programmed by the user to make the output transistor either ‘‘on’’ or ‘‘off’’ during the timing period The trigger input to the LM122 series has a threshold of 1 6V independent of supply voltage but it is fully protected against inpu...
