NOT RECOMMENDED FOR NEW DESIGN, USE (APX809/810) AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS General Description Features The AP1701/2/3/4 are used for microprocessor (P) supervisory Precision Monitoring of +2.5V, +3V, +3.3V, and +5V circuits to monitor the power supplies in P and digital systems. Power-Supply Voltages They provide excellent circuit reliability and low cost by Fully Specified Over Temperature eliminating external components and adjustments when used Available in three Output Configurations with +5V, +3.3V, +3.0V powered circuits. Push-PullRESET Low Output (AP1701/3) These circuits perform a single function: they assert a reset Push-Pull RESET High Output (AP1702/4) signal whenever the V supply voltage declines below a preset CC 200ms Min. Power-On Reset Pulse Width threshold, keeping it asserted for at least 240ms after V has CC 20A Supply Current (Typ.) risen above the reset threshold. Reset thresholds suitable for Guaranteed Reset Valid to V = +1V CC operation with a variety of supply voltages are available. The Power Supply Transient Immunity AP1701/2/3/4 have push pull outputs. The AP1701/3 have an No External Components active low RESET output, while the AP1702/4 has an active SC59: Available in Green Molding Compound (No Br, Sb) high RESET output. The reset comparator is designed to ignore fast transients on V , and the outputs are guaranteed to be in Lead Free Finish/ RoHS Compliant (Note 1) CC the correct logic state for V down to 1V. Low supply current CC 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. Applications Computers Controllers Intelligent Instruments Critical P and C Power Monitoring Portable/Battery Powered Equipment Automotive Typical Application Circuit V CC Cin 0.1uF V V CC CC Microprocessor AP170X RESET RESET INPUT (RESET) GND GND AP1701/2/3/4 Rev. 3 1 of 10 AUGUST 2009 www.diodes.com Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN, USE (APX809/810) AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS Ordering Information AP 170 X X W X - 7 Enable Voltage Lead Free Package Packing 1 : Active-Low A : 4.63 W : SC59 L : Lead Free 7 : Tape & Reel 2 : Active-High B : 4.38 G : Green 3 : Active-Low C : 4.00 4 : Active-High D : 3.08 E : 2.93 F : 2.63 G : 2.25 7 Tape and Reel Package Packaging Device Code (Note 2) Quantity Part Number Suffix AP170XWL-7 W SC59 3000/Tape & Reel -7 Lead-free AP170XWG-7 W SC59 3000/Tape & Reel -7 Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at