the imp705/706/707/708 and imp813l cmos supervisor circuits
monitor power-supply and battery voltage level, and μp/μc operation.
compared to pin-compatible devices offered by maxim integrated
products, impdevices feature 60 percent lower maximum supply current.
the family offers several functional options. each device generates a
reset signal during power-up, power-down and during brownout
conditions. a reset is  generated when the supply drops below
4.65v (imp705/707/813l) or 4.40v (imp706/708). for 3v power supply
applications, refer to the imp705p/r/s/t data sheet. in addition, the
imp705/706/813l feature a 1.6 second watchdog timer. the imp707/708
have both active-high and active-low reset outputs but no watchdog
function. the imp813lhas the same pin-out and functions as the imp705
but has an active-high reset output. a versatile power-fail circuit has a
1.25v threshold, useful in checking battery levels and non-5v supplies. all
devices have a manual reset (mr) input. the watchdog timer output will
trigger a reset if connected to mr.
all devices are available in 8-pin dip, so and microso packages.