Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
The LM809 and LM810 are a supervisor circuit for microprocessor and digital systems. With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.
For this design example, use the parameters listed in Table 2 as the input parameters.
|DESIGN PARAMETER||EXAMPLE VALUE|
|Input supply voltage range||1 V to 5.5 V|
|Reset output voltage (high)||Input supply|
|Reset output voltage (low)||0 V|
For the typical application circuit, all that is required is the LM809 or LM810 IC, but TI recommends an input capacitor to help with input voltage transients. A typical input capacitor value is 0.1 uF and must be rated for the highest expected input voltage.