Diodes APX809/810 User Manual download pdf

APX809/810

3-PIN MICROPROCESSOR RESET CIRCUITS

APX809/810 Rev. 4 1 of 9 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

• Precision Monitoring of +2.5V, +3V, +3.3V, and +5V

Power-Supply Voltages

• Fully Specified Over Temperature

• Available in three Output Configurations

• Push-Pull

RESET Active Low (APX809)

• Push-Pull

RESET Active High (APX810)

• 200ms Typ Power-On Reset Pulse Width

• 30µA Supply Current (Typ.)

• Guaranteed Reset Valid to V

= +1V

• No External Components

• SOT23 and SOT23R: Available in “Green” Molding

Compound (No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

The APX809/810 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 powered circuits.

These circuits perform a single function: they assert a reset

signal whenever the V

supply voltage declines below a preset

threshold, keeping it asserted for at least 240ms after V

has

risen above the reset threshold. Reset thresholds suitable for

operation with a variety of supply voltages are available. The

APX809/810 have push pull outputs. The APX809 have an active

low

RESET

output, while the APX810 has an active high

RESET output. The reset comparator is designed to ignore fast

transients on V

, and the outputs are guaranteed to be in the

correct logic state for V

down to 1V. Low supply current makes

the APX809/810 ideal for use in portable equipment. The

APX809/810 is available in a 3-pin SOT23 and SOT23R

packages.

• Computers

• Controllers

• Intelligent Instruments

• Critical µP and µC Power Monitoring

• Portable/Battery Powered Equipment

• Automotive

APX 8 XX - XX XX G - 7

Voltage

Package

Packing

7 : Tape & Reel

Enable

Green

G : Green

SA : SOT23

SR : SOT23R

46 : 4.63

44 : 4.38

40 : 4.00

31 : 3.08

29 : 2.93

26 : 2.63

23 : 2.25

09 : Active-Low

10 : Active-High

Device

Package

Code

Packaging

(Note 2)

7” Tape and Reel

Quantity Part Number Suffix

APX809-XXSAG-7 SA SOT23 3000/Tape & Reel -7

APX810-XXSAG-7 SA SOT23 3000/Tape & Reel -7

APX809-XXSRG-7 SR SOT23R 3000/Tape & Reel -7

APX810-XXSRG-7 SR SOT23R 3000/Tape & Reel -7

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf

Features

General Description

Applications

Ordering Information

1 2 3 4 5 6 7 8 9

Summary of Contents

Page 1 - APX809/810

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 1 of 9

Page 2

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 2 of 9

Page 3

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 3 of 9

Page 4

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 4 of 9

Page 5

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 5 of 9

Page 6 - RESET Timeout Period (mS)

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 6 of 9

Page 7 - Timing Diagram

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 7 of 9

Page 8 - Marking Information

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 8 of 9

Page 9 - Diodes Incorporated

APX809/8103-PIN MICROPROCESSOR RESET CIRCUITS APX809/810 Rev. 4 9 of 9

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