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APX803S/809S/810S MPU Supervisor Circuits

Diodes Inc. APX803S/809S/810S MPU Supervisor Circuits are used to monitor power supplies in μP, μC, and digital systems. The APX803S provides excellent circuit reliability and low cost by eliminating external components. The circuits are available with different reset thresholds designed to support different supply voltages (+5V, +3.3V, +3.0V, and +2.5V). These circuits assert a reset signal whenever the V_CC supply voltage falls below a preset threshold. This keeps it asserted for at least 240ms after V_CC has risen above the reset threshold.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Type	Mounting Style	Package / Case	Threshold Voltage	Number of Inputs Monitored	Output Type	Manual Reset	Watchdog Timers	Battery Backup Switching	Reset Delay Time	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Supervisory Circuits 3.08V, 240ms MPU Reset Circuit APX803S-31SA-7 Diodes Incorporated 1: $0.27 34,829In Stock 108,000On Order	Mfr. Part # APX803S-31SA-7 Mouser Part # 621-APX803S-31SA-7	Diodes Incorporated	Supervisory Circuits 3.08V, 240ms MPU Reset Circuit Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	34,829In Stock 108,000On Order On Order Ship Dates Mfr. #: APX803S-31SA-7 Stock: 34,829 Can Ship Immediately On Order: 51,000 Expected 6/9/2027 57,000 Expected 7/7/2027 Factory Lead-Time: 40 Weeks	Cut Tape $0.27 $0.203 $0.173 $0.154 View Reel $0.119 $0.147 $0.143 $0.137 $0.119 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,230 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	3.08 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	240 ms	5.5 V	- 40 C	+ 85 C	APX803S	Reel, Cut Tape, MouseReel
Supervisory Circuits 2.93V, 1.7ms MPU Reset Circuit APX803S00-29SR-7 Diodes Incorporated 1: $0.29 2,278In Stock	Mfr. Part # APX803S00-29SR-7 Mouser Part # 621-APX803S00-29SR-7	Diodes Incorporated	Supervisory Circuits 2.93V, 1.7ms MPU Reset Circuit Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	2,278In Stock	Cut Tape $0.29 $0.20 $0.163 $0.152 Reel $0.106 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	1.7 ms	5.5 V	- 40 C	+ 85 C	APX803S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX809S-29SA-7 Diodes Incorporated 1: $0.28 742In Stock 111,000On Order	Mfr. Part # APX809S-29SA-7 Mouser Part # 621-APX809S-29SA-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	742In Stock 111,000On Order On Order Ship Dates Mfr. #: APX809S-29SA-7 Stock: 742 Can Ship Immediately On Order: 15,000 Expected 1/8/2027 27,000 Expected 3/12/2027 27,000 Expected 3/19/2027 42,000 Expected 6/2/2027 Factory Lead-Time: 52 Weeks	Cut Tape $0.28 $0.189 $0.154 $0.143 Reel $0.112 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,020 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active Low, Push-Pull	No Manual Reset	No Watchdog	No Backup	240 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX809S-29SR-7 Diodes Incorporated 1: $0.29 153In Stock	Mfr. Part # APX809S-29SR-7 Mouser Part # 621-APX809S-29SR-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	153In Stock	Cut Tape $0.29 $0.20 $0.163 $0.152 View Reel $0.112 $0.134 $0.13 $0.124 $0.112 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Detector	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active Low, Push-Pull	No Manual Reset	No Watchdog	No Backup	240 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX809S05-29SA-7 Diodes Incorporated 1: $0.27 5,451In Stock	Mfr. Part # APX809S05-29SA-7 Mouser Part # 621-APX809S05-29SA-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	5,451In Stock	Cut Tape $0.27 $0.181 $0.153 $0.136 View Reel $0.105 $0.13 $0.127 $0.124 $0.105 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active Low, Push-Pull	No Manual Reset	No Watchdog	No Backup	50 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX810S-29SA-7 Diodes Incorporated 1: $0.29 2,715In Stock 3,000Expected 6/2/2027	Mfr. Part # APX810S-29SA-7 Mouser Part # 621-APX810S-29SA-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	2,715In Stock 3,000Expected 6/2/2027	Cut Tape $0.29 $0.198 $0.168 $0.149 View Reel $0.107 $0.143 $0.139 $0.136 $0.107 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active High, Push-Pull	No Manual Reset	No Watchdog	No Backup	240 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX810S-44SA-7 Diodes Incorporated 1: $0.27 5,194In Stock	Mfr. Part # APX810S-44SA-7 Mouser Part # 621-APX810S-44SA-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	5,194In Stock	Cut Tape $0.27 $0.181 $0.153 $0.136 View Reel $0.105 $0.13 $0.127 $0.124 $0.105 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active High, Push-Pull	No Manual Reset	No Watchdog	No Backup	240 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX810S-44SR-7 Diodes Incorporated 1: $0.27 1,798In Stock	Mfr. Part # APX810S-44SR-7 Mouser Part # 621-APX810S-44SR-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	1,798In Stock	Cut Tape $0.27 $0.181 $0.153 $0.136 View Reel $0.102 $0.13 $0.127 $0.124 $0.102 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	4.38 V	1 Input	Active High, Push-Pull	No Manual Reset	No Watchdog	No Backup	240 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX810S00-29SR-7 Diodes Incorporated 1: $0.27 1,845In Stock	Mfr. Part # APX810S00-29SR-7 Mouser Part # 621-APX810S00-29SR-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	1,845In Stock	Cut Tape $0.27 $0.181 $0.153 $0.136 View Reel $0.10 $0.13 $0.127 $0.124 $0.10 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active High, Push-Pull	No Manual Reset	No Watchdog	No Backup	1.7 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX810S05-29SR-7 Diodes Incorporated 1: $0.26 754In Stock	Mfr. Part # APX810S05-29SR-7 Mouser Part # 621-APX810S05-29SR-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	754In Stock	Cut Tape $0.26 $0.174 $0.153 $0.131 View Reel $0.10 $0.12 $0.113 $0.108 $0.10 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active High, Push-Pull	No Manual Reset	No Watchdog	No Backup	1.7 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel
Supervisory Circuits 3-pin MPU Power Voltage Detector APX809S00-29SA-7 Diodes Incorporated 1: $0.27 8,505Expected 3/26/2027	Mfr. Part # APX809S00-29SA-7 Mouser Part # 621-APX809S00-29SA-7	Diodes Incorporated	Supervisory Circuits 3-pin MPU Power Voltage Detector Learn More about Diodes Incorporated diodes apx803s 809s 810s circuits	Datasheet	8,505Expected 3/26/2027	Cut Tape $0.27 $0.186 $0.158 $0.14 View Reel $0.106 $0.134 $0.13 $0.124 $0.106 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,000 : 3,000	Voltage Monitor	SMD/SMT	SOT-23-3	2.93 V	1 Input	Active Low, Push-Pull	No Manual Reset	No Watchdog	No Backup	1.7 ms	5.5 V	- 40 C	+ 125 C	APX809S/810S	Reel, Cut Tape, MouseReel

APX803S/809S/810S MPU Supervisor Circuits

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