AP1701/2/3/4
NOT RECOMMENDED FOR NEW
DESIGN, USE (APX809/810)
3-PIN MICROPROCESSOR RESET CIRCUITS
AP1701/2/3/4 Rev. 2 1 of 10 JANUARY 2007
www.diodes.com © Diodes Incorporated
AP170
X
X
X
X
X
Voltage
Package
Packing
A:4.63
B:4.38
C:4.00
D:3.08
E:2.93
F:2.63
G:2.25
W : SC59
-7 : Taping
Enable
1 : Active-Low
2:Active-High
3 : Active-Low
4:Active-High
Lead Free
L : Lead Free
G:Green
SA : SOT23
Features
General Description
The AP1701/2/3/4 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.
• 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 Low Output (AP1701/3)
These circuits perform a single function: they assert a reset
signal whenever the V
CC
supply voltage declines below a preset
threshold, keeping it asserted for at least 240ms after V
CC
has
risen above the reset threshold. Reset thresholds suitable for
operation with a variety of supply voltages are available. The
AP1701/2/3/4 have push pull outputs. The AP1701/3 have an
active low
RESET output, while the AP1702/4 has an active
high RESET output. The reset comparator is designed to ignore
fast transients on V
CC
, and the outputs are guaranteed to be in
the correct logic state for V
CC
down to 1V. Low supply current
makes the AP1701/2/3/4 ideal for use in portable equipment. The
AP1701/2/3/4 is available in a 3-pin SC59 package.
• Push-Pull
RESET High Output (AP1702/4)
• 200ms Min. Power-On Reset Pulse Width
• 20µA Supply Current (Typ.)
• Guaranteed Reset Valid to V
CC
= +1V
• Power Supply Transient Immunity
• No External Components
• Green Packages: SC59-3L and SOT23
• Lead Free Finish / RoHS Compliant (Note 1)
Applications
• Computers
• Controllers
• Intelligent Instruments
• Critical µP and µC Power Monitoring
• Portable/Battery Powered Equipment
• Automotive
Ordering Information
Notes: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
7” Tape and Reel
Device
Package
Code
Packaging
(Note 2)
Quantity Part Number Suffix
AP170XXW W SC59 3000/Tape & Reel -7
AP170XXSA SA SOT23 3000/Tape & Reel -7
Notes: 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.