SS8039L263TCTR

SS8039 Microprocessor Voltage Monitor with Manual Reset Features Precision monitoring of +3V, +3.3V, and +5V power-supply voltages General Description The SS8039 is a microprocessor (µP) supervisory circuit used to monitor the power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components 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 VCC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. Fully specified over temperature Available in two output configurations Push-pull RESET output (SS8039L) Push-pull RESET output (SS8039H) Manual reset input Power-on reset pulse width of 140ms min Supply current of 5µA Guaranteed reset valid to VCC = +1V Power supply transient immunity No external components 4-Pin SOT-143 package Applications Computers Controllers Intelligent instruments Critical µP and µC power monitoring Portable / battery-powered equipment Automotive Compatible with the popular "811" series The SS8039 has a push-pull output stage. The SS8039L has an active-low RESET output, while the SS8039H has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the SS8039 ideal for use in portable equipment, and it is available in a 4-pin SOT-143 package. Pin Configuration 4 VCC Typical Application V CC VCC V CC GND 1 SS8039 SS8039 MR RESET (RESET) GND µP RESET INPUT GND RESET(RESET) 2 SOT143 3 MR (RESET) for SS8039H (RESET) for SS8039H Rev.2.02 1/06/2004 www.SiliconStandard.com 1 of 7 SS8039 Ordering Information Options are released to production as needed. Please check with Silicon Standard for availability. SS8039X XXX TC XX Packing - TR: Tape and reel Package type - TC: SOT-143 Threshold voltage - xxx specifies the threshold voltage. Reset active-low (L) or active-high (H) Example: SS8039H263TCTR SS8039 with push-pull active-high reset output at 2.63V in SOT-143 package supplied on tape and reel Absolute Maximum Ratings Terminal voltages with respect to GND VCC.……………………………..…….…….-0.3V to +6.0V RESET, RESET (push-pull)....…....-0.3V to (VCC + 0.3V) Input Current,VCC...........................….............20mA Output Current, RESET, RESET ......................20mA Continuous Power Dissipation (TA = +70°C) SOT-143 (derate 4mW/°C above +70°C)….…....320mW Operating Temperature Range …..…....-40°C to +105°C Storage Temperature Range..….... …. ...-65°C to +150°C Lead Temperature (soldering, 10s) …....…......+300°C Electrical Characteristics (VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V for 463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1) PARAMETER V CC Range Supply Current ICC SYMBOL TA = 0°C +70°C TA = - 40°C +105°C TA = - 40°C +105°C SS8039x463 SS8039x438 SS8039x400 SS8039x308 SS8039x293 SS8039x263 CONDITION MIN 1.0 1.2 TYP MAX UNITS 5.5 5.5 5.5 5 9 8 4.722 4.467 4.08 3.141 2.988 2.682 V V µA V CC