ver: 2.7 apr 10, 2012 tel: 886-3-5788833 http://www.gmt.com.tw 1 G696/g697 global mixed-mode technology microprocessor reset ic features ? precision monitoring of +3v, +3.3v, and +5v power-supply voltages ? fully specified over temperature ? available in three output configurations push-pull reset output (G696l) push-pull reset output (G696h) open-drain reset output (g697l) ? externally programmable time delay generator ? 14 a supply current ? guaranteed reset valid to v cc = 0.8v ? power supply transient immunity ? 5 pin sot-23-5 or tsot-23-5 packages ? 2% threshold accuracy applications ? computers ? controllers ? intelligent instruments ? critical p and c power monitoring ? portable / battery-powered equipment ? automotive general description the G696/g697 are microprocessor ( p) supervisory circuits used to monitor the power supplies in p 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- grammable 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 or tsot-23-5 packages. pin configuration typical application circuit reset (reset) vcc sot-23-5/tsot-23-5 G696/g697 5 1 2 nc 4 3 gnd cd ()is for G696h *g697 only reset input gnd p vcc reset (reset) gnd G696/g697 vcc cd v cc c d r pull-up* icc may increased at high t a , therefore, can not connect resistors to vcc to prevent icc abnormal behavior at high t a . reset (reset) vcc sot-23-5/tsot-23-5 G696/g697 5 1 2 nc 4 3 gnd cd ()is for G696h *g697 only reset input gnd p vcc reset (reset) gnd G696/g697 vcc cd v cc c d r pull-up* icc may increased at high t a , therefore, can not connect resistors to vcc to prevent icc abnormal behavior at high t a . reset (reset) vcc sot-23-5/tsot-23-5 G696/g697 5 1 2 nc 4 3 gnd cd ()is for G696h *g697 only reset input gnd p vcc reset (reset) gnd G696/g697 vcc cd v cc c d r pull-up* icc may increased at high t a , therefore, can not connect resistors to vcc to prevent icc abnormal behavior at high t a .
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