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Description

The APX809S/810S are used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V and +2.5V 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 240ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The APX809S/810S have push pull outputs. The APX809S have an active low output, while the APX810S 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 APX809S/810S ideal for use in portable equipment.

The APX809S/810S is available in a 3-pin SOT23 packages.

Application

  • Computers
  • Controllers
  • Intelligent Instruments
  • Critical µP and µC Power Monitoring
  • Portable/Battery Powered Equipment

Features

  • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages
  • Fully Specified Over-temperature
  • Available in three Output Configurations
  • Push-Pull Active Low (APX809S)
  • Push-Pull RESET Active High (APX810S)
  • 200ms Typ Power-On Reset Pulse Width
  • 10µA Supply Current (Typ.)
  • Guaranteed Reset Valid to VCC = +1V
  • No External Components

Product Specifications

Product Parameters

Fixed Detect Voltages 2.25, 2.63, 2.93, 3.08, 4, 4.38, 4.63 V
Adjustable Detect voltage reference voltage N/A V
Number of Channels N/A
Minimum Operating Voltage 1 V
Maximum Input 5.5 V
Quiescent Current 10 µA
Typical Time Delay 50, 1.7, 240 µs
Reset Period N/A ms
RESET Output (Active High) No (Active High)
RESET Output (Active Low) Yes (Active Low)
Manual RESET No
Watchdog No
Watchdog Time None s
Power Fail Comparator Threshold None V
Reset Output Topology Push-Pull
Ambient Temperature Range -40 to 85

Related Content

Packages
SOT23

Applications

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

Request Documents
Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
APX809S-23SA-7 Arrow Electronics Central EU 3000 8/3/2020 Buy Now Germany
APX809S-23SA-7 Mouser Electronics Inc. 2390 8/3/2020 Buy Now United States
APX809S-23SA-7 Digi-Key Electronics 2908 8/2/2020 Buy Now United States
APX809S-23SR-7 Mouser Electronics Inc. 155 8/3/2020 Buy Now United States
APX809S-23SR-7 Digi-Key Electronics 55 8/2/2020 Buy Now United States
APX809S-26SA-7 Mouser Electronics Inc. 1844 8/3/2020 Buy Now United States
APX809S-26SA-7 Digi-Key Electronics 2244 8/2/2020 Buy Now United States
APX809S-26SR-7 Mouser Electronics Inc. 4893 8/3/2020 Buy Now United States
APX809S-26SR-7 Digi-Key Electronics 4872 8/2/2020 Buy Now United States
APX809S-29SA-7 Mouser Electronics Inc. 4049 8/3/2020 Buy Now United States
APX809S-29SA-7 Digi-Key Electronics 3883 8/2/2020 Buy Now United States
APX809S-29SA-7 Future Electronics - Asia 9000 8/2/2020 Singapore
APX809S-29SR-7 Arrow Electronics Central EU 3000 8/3/2020 Buy Now Germany
APX809S-29SR-7 Mouser Electronics Inc. 1773 8/3/2020 Buy Now United States
APX809S-29SR-7 Digi-Key Electronics 2265 8/2/2020 Buy Now United States
APX809S-31SA-7 Arrow Electronics 2673 8/3/2020 Buy Now United States
APX809S-31SA-7 Arrow Electronics Central EU 3000 8/3/2020 Buy Now Germany
APX809S-31SA-7 Mouser Electronics Inc. 2130 8/3/2020 Buy Now United States
APX809S-31SA-7 Digi-Key Electronics 8916 8/2/2020 Buy Now United States
APX809S-31SA-7 Future Electronics 3000 8/2/2020 Buy Now Canada
APX809S-31SR-7 Mouser Electronics Inc. 2956 8/3/2020 Buy Now United States
APX809S-31SR-7 Digi-Key Electronics 2831 8/2/2020 Buy Now United States
APX809S-40SA-7 Mouser Electronics Inc. 1275 8/3/2020 Buy Now United States
APX809S-40SA-7 Digi-Key Electronics 3000 8/2/2020 Buy Now United States
APX809S-40SR-7 Mouser Electronics Inc. 2824 8/3/2020 Buy Now United States
APX809S-40SR-7 Digi-Key Electronics 2408 8/2/2020 Buy Now United States
APX809S-44SA-7 Digi-Key Electronics 2994 8/2/2020 Buy Now United States
APX809S-44SR-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S-46SA-7 Mouser Electronics Inc. 2994 8/3/2020 Buy Now United States
APX809S-46SA-7 Digi-Key Electronics 113 8/2/2020 Buy Now United States
APX809S-46SR-7 Mouser Electronics Inc. 3769 8/3/2020 Buy Now United States
APX809S-46SR-7 Digi-Key Electronics 2837 8/2/2020 Buy Now United States
APX809S00-26SA-7 Mouser Electronics Inc. 2985 8/3/2020 Buy Now United States
APX809S00-26SR-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S00-29SA-7 Mouser Electronics Inc. 857 8/3/2020 Buy Now United States
APX809S00-29SA-7 Digi-Key Electronics 1866 8/2/2020 Buy Now United States
APX809S00-29SR-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S00-31SA-7 Mouser Electronics Inc. 590 8/3/2020 Buy Now United States
APX809S00-31SR-7 Mouser Electronics Inc. 3480 8/3/2020 Buy Now United States
APX809S00-40SR-7 Mouser Electronics Inc. 1480 8/3/2020 Buy Now United States
APX809S00-44SA-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S00-46SA-7 Arrow Electronics Central EU 6000 8/3/2020 Buy Now Germany
APX809S00-46SA-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S00-46SR-7 Mouser Electronics Inc. 1193 8/3/2020 Buy Now United States
APX809S05-23SA-7 Mouser Electronics Inc. 2815 8/3/2020 Buy Now United States
APX809S05-23SR-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S05-29SA-7 Mouser Electronics Inc. 875 8/3/2020 Buy Now United States
APX809S05-29SA-7 Digi-Key Electronics 3161 8/2/2020 Buy Now United States
APX809S05-31SA-7 Mouser Electronics Inc. 1520 8/3/2020 Buy Now United States
APX809S05-31SR-7 Mouser Electronics Inc. 3000 8/3/2020 Buy Now United States
APX809S05-46SA-7 Arrow Electronics Central EU 3000 8/3/2020 Buy Now Germany
APX809S05-46SA-7 Mouser Electronics Inc. 2960 8/3/2020 Buy Now United States

PCNs

Product Change Notices

PCN # Issue Date Subject
PCN-2348 2018-07-19 Additional Qualified Assembly/Test (A/T) Site for Select Devices

FAQs

Related Application FAQs