G696

The G696/G697 are microprocessor (µP) supervisory  circuits used to monitor the power supplies in µP and  digital systems. They provide excellent circuit reliability  and low cost and adjustments when used with +5V,  +3.3V, +3.0V- powered circuits.

These circuits perform a single function: they assert a  reset signal whenever the V_CC supply voltage declines  below a preset threshold, with hysteresis keeping it  asserted for time delay determined by externally pro- gramable time delay generator. after V_CC has risen  above the reset threshold. Reset thresholds suitable  for operation with a variety of supply voltages are  available.

The G697L has an open-drain output stage, while the  G696 have push-pull outputs. The G697L's open-drain  RESET   output requires a pull-up resistor that can be  connected to a voltage higher than V_CC. The G696L  have an active-low  _RESET   output, while the G696H  has an active-high RESET output. The reset com-
parator is designed to ignore fast transients on V_CC,  and the outputs are guaranteed to be in the correct  logic state for V_CC down to 0.8V.

Low supply current makes the G696/G697 ideal for use in portable equipment. The G696/G697 are avail- able in 5-pin SOT23-5 packages.