SP708SEN-L/TR

S P 7 0 6 R/ S / T - S P 7 0 8 R/ S / T 3.0V/3.3V Low Power Microprocessor Supervisory Circuits April 2015 Rev. 3.0.0 GENERAL DESCRIPTION APPLICATIONS The SP706R/S/T and SP708R/S/T series is a family of microprocessor (µP) supervisory circuits that integrate myriad components involved in discrete solutions which monitor power-supply and battery in µP and digital systems. The SP706R/S/T and SP708R/S/T series will significantly improve system reliability and operational efficiency when compared to solutions obtained with discrete components. The features of the SP706R/S/T and SP708R/S/T series include a watchdog timer, a µP reset, a Power Fail Comparator, and a manual-reset input. The SP706R/S/T and SP708R/S/T series is ideal for 3.0V or 3.3V applications in automotive systems, computers, controllers, and intelligent instruments. The SP706R/S/T and SP708R/S/T series is an ideal solution for systems in which critical monitoring of the power supply to the µP and related digital components is demanded.  Processors & DSPs Based Systems  Industrial & Medical Instruments FEATURES  Precision Low Voltage Monitor  SP706R/SP708R: +2.63V  SP706S/SP708S: +2.93V  SP706T/SP708T: +3.08V  200ms RESET Pulse Width  SP706R/S/T: Active Low  SP708R/S/T: Active High and Active Low  Independent Watchdog Timer  1.6s Timeout (SP706R/S/T)  Enable/Disable Function  40µA Maximum Supply Current  Debounced TTL/CMOS Manual Reset Input  RESET Asserted Down to VCC=1V  VCC Glitch Immunity  Voltage Monitor for Power Failure or Low Battery Warning  8-Pin NSOIC and MSOP Packages  Pin Compatible with Industry Standards 706R/S/T and 708R/S/T Part Number RESET Threshold RESET Active Manual RESET Watchdog PFI Accuracy SP706R 2.63V Low Yes Yes 4% SP706S 2.93V Low Yes Yes 4% SP706T 3.08V Low Yes Yes 4% SP708R 2.63V Low and High Yes No 4% SP708S 2.93V Low and High Yes No 4% SP708T 3.08V Low and High Yes No 4% Exar Corporation 48720 Kato Road, Fremont CA 94538, USA www.exar.com Tel. +1 510 668-7000 – Fax. +1 510 668-7001 S P 7 0 6 R/ S / T - S P 7 0 8 R/ S / T 3.0V/3.3V Low Power Microprocessor Supervisory Circuits ABSOLUTE MAXIMUM RATINGS ESD Rating (HBM - Human Body Model) .................... 2kV Continuous Power Dissipation SO (derate 5.88mW/°C above +70°C)...............471mW Mini SO (derate 4.10mW/°C above +70°C) ........330mW Storage Temperature ..............................-65°C to 160°C Lead Temperature (Soldering, 10 sec) ....................300°C These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCC .......................................................... -0.3V to 6.0V All Other Inputs (Note 1) ................... -0.3V to (VCC+0.3V) Input Current VCC .................................................................20mA GND ................................................................20mA Output Current (All outputs) ...............................20mA ELECTRICAL SPECIFICATIONS Unless otherwise indicated, VCC = 2.7V to 5.5V (SP70xR), VCC = 3.15V to 5.5V (SP70xS), VCC = 3.0V to 5.5V (SP70xT), TA= TMIN to TMAX, typical at 25°C. Parameter Operating Voltage Range VCC Min. 25 Supply Current ISUPPLY Reset Threshold Max. Units 5.5 V 40 µA MR=VCC or floating, WDI floating, VCC = 3.3V µA MR=VCC or floating, VCC = 5.5V 40 80 2.55 2.63 2.70 2.85 2.93 3.00 3.00 3.08 3.15 Reset Threshold Hysteresis Reset Pulse Width tRS Typ. 1.0 200 SP706R. SP708R V SP706S. SP708S SP706T. SP708T mV Note 2 280 ms Note 2 0.3 V 20 140 Conditions RESET Output Voltage VOH VRST(MAX)