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SS809 Dataheets PDF



Part Number SS809
Manufacturers Silicon Standard
Logo Silicon Standard
Description 3-Pin Microprocessor Reset Circuits
Datasheet SS809 DatasheetSS809 Datasheet (PDF)

SS809/810G 3-Pin Microprocessor Reset Circuits FEATURES Ultra-low supply current 1µA (typ.) Guaranteed reset valid to Vcc=0.9V Available in three output types: Open-drain active low (SS809N-xxGx) Push-pull active low (SS809-xxGx) Push-pull active high (SS810-xxGx) Power-on reset pulse width min. 140ms Internally fixed threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.0V, 4.4V, 4.6V Tight voltage threshold tolerance: 1.5% Packaged in RoHS-compliant SOT-23-3 These devices provide valid signals in applications w.

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SS809/810G 3-Pin Microprocessor Reset Circuits FEATURES Ultra-low supply current 1µA (typ.) Guaranteed reset valid to Vcc=0.9V Available in three output types: Open-drain active low (SS809N-xxGx) Push-pull active low (SS809-xxGx) Push-pull active high (SS810-xxGx) Power-on reset pulse width min. 140ms Internally fixed threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.0V, 4.4V, 4.6V Tight voltage threshold tolerance: 1.5% Packaged in RoHS-compliant SOT-23-3 These devices provide valid signals in applications with Vcc ranging from 6.0V down to 0.9V. The reset signal lasts for a minimum period of 140ms whenever the VCC supply voltage falls below a preset threshold. Both the SS809G and SS810G were designed with a reset comparator to help identify invalid signals lasting less than 140ms. The only difference between the two devices is that one has an active -low RESET output and the other an active -high RESET output . Low supply current (1µA) makes the SS809G and SS810G ideal for portable equipment. The devices are available in a SOT-23-3 package. DESCRIPTION The SS809G and SS810G are low-power microprocessor (µP) supervisory circuits used to monitor power supplies in µP and digital systems. They improve circuit reliability and reduce cost by eliminating external components. APPLICATIONS l l l l Notebook Computers Digital Still Cameras PDAs Critical Microprocessor Monitoring TYPICAL APPLICATION CIRCUIT VCC VCC SS809G ( SS810G) RESET (RESET) GND VCC µP RESET INPUT GND Push -Pull Output 9/20/2006 Rev.3.01 www.SiliconStandard.com 1 of 8 SS809/810G ORDERING INFORMATION SS809X-XXGU XX SS810 -XXGU XX Packing type TR: T ape and reel SOT-23-3 TOP VIEW 1: GND 2: RESET (RESET) 3: VCC 3 PIN CONFIGURATION 1 2 Package type GU: RoHS-compliant Pb-free SOT-23-3 Reset threshold voltage 23: 2.3V 26: 2.6V 29: 2.9V 31: 3.1V 40: 4.0V 44: 4.4V 46: 4.6V Output type Default: Push-Pull type N: N-ch open-drain type Example: SS809 -31GU TR à 3.1V , push- pull version in RoHS-compliant SOT -23-3 , shipped in tape and reel SOT -23 Part Marking Part No. SS809-23GU SS809-26GU SS809-29GU SS809-31GU SS809-40GU SS809-44GU SS809-46GU Marking RA23P RA26P RA29P RA31P RA40P RA44P RA46P Part No. SS809N-23GU SS809N-26GU SS809N-29GU SS809N-31GU SS809N-40GU SS809N-44GU SS809N-46GU Marking RB23P RB26P RB29P RB31P RB40P RB44P RB46P Part No. SS810-23GU SS810-26GU SS810-29GU SS810-31GU SS810-40GU SS810-44GU SS810-46GU Marking RD23P RD26P RD29P RD31P RD40P RD44P RD46P 9/20/2006 Rev.3.01 www.SiliconStandard.com 2 of 8 SS809/810G ABSOLUTE MAXIMUM RATINGS VCC RESET, RESET Input Current (V CC) Output Current (RESET or RESET ) Continuous Power Dissipation (TA = +70°C) Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 10 sec -0.3V ~6.5V -0.3V ~ (VCC+0.3V) 20mA 20mA 320mW -40°C ~ 85°C - 65°C ~ 125°C 260°C Note1: Any stress beyond the Absolute Maximum Ratings above may cause permanent damage to the device. TEST CIRCUIT 3 2 Vin VCC GND RESET Iin SS809G 1 9/20/2006 Rev.3.01 www.SiliconStandard.com 3 of 8 SS809/810G ELECTRICAL CHARACTERISTICS (Typical values are at TA=25° C, unless otherwise specified.) PARAMETER Operating Voltage Range Supply Current TEST CONDITIONS VCC = VTH +0.1V SS809-23 SS809-26 SS809-29 Reset Threshold VTH SS809-31 SS809-40 SS809-44 SS809-46 VCC to Reset Delay Reset Active Timeout Period TRD TRP VOH VOL VOH VOL TA=+25°C TA= -40°C to +85°C TA=+25°C TA= -40°C to +85°C TA=+25°C TA= -40°C to +85°C TA=+25°C TA= -40°C to +85°C TA=+25°C TA= -40°C to +85°C TA=+25°C TA= -40°C to +85°C TA=+25°C TA=-40°C to +85°C TA=+25°C TA= -40°C to +85°C 2.265 2.254 2.561 2.548 2.857 2.842 3.054 3.038 3.940 3.920 4.334 4.312 4.531 4.508 20 140 100 0.8V CC 0.2Vcc 0.8V CC 0.2Vcc 230 560 1030 4.6 4.4 4.0 3.1 2.9 2.6 MIN. 0.9 1 2.3 TYP. MAX. 6 3 2.335 2.346 2.639 2.652 2.944 2.958 3.147 3.162 4.060 4.080 4.466 4.488 4.669 4.692 µS mS V V UNIT V µA SYMBOL VCC ICC VCC=VTH to (VTH -0.1V), VTH=3.1V VCC = VTH ( MAX) RESET Output Voltage VCC=VTH+0.1V, ISOURCE =1mA VCC=VTH - 0.1V, ISINK =1mA VCC=VTH-0.1V, ISOURCE =1mA VCC=VTH+0.1V, ISINK =1mA RESET Output Voltage V Note2: RESET output is for the SS809G; RESET output is for the SS810G. Note3: Specifications for operating temperature ranges from -40°C to 85°C are guaranteed by Statistical Quality Controls (SQC), with no production testing. 9/20/2006 Rev.3.01 www.SiliconStandard.com 4 of 8 SS809/810G TYPICAL PERFORMANCE CHARACTERISTICS 1.5 1.4 120 Power -Down Reset Delay (µ s ) 110 100 90 80 70 60 50 40 30 20 10 0 -60 -40 -20 0 20 40 VTH=2.3V Supply Current (µ A) 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 - 20 0 20 VTH=2.3V VO D=VTH-VCC VTH=3.1V VTH=4.6V VOD=50mV VOD=100mV VOD=200mV 40 60 80 100 60 80 100 Temperature (° C) Fig 1 Supply Current vs. Temperature 240 Temperature (° C) Fig 2 Power-Down Reset Delay vs. Temperature Power -Down Reset Delay (µ s ) Power -Down Reset Delay (µ s ) 220 200 180 160 140 120 100 80 60 40 20 0 -60 - 40 -20 VTH=3.1V.


2SA641 SS809 SS810G


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