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AP1703 Datasheet(PDF) 1 Page - Anachip Corp |
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AP1703 Datasheet(HTML) 1 Page - Anachip Corp |
1 / 8 page AP1701/2/3/4 3-Pin Microprocessor Reset Circuits This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev.1.0 May. 7, 2004 1/8 Features - Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages - Fully Specified Over Temperature - Available in Three Output Configurations - Push-Pull RESET Low Output (AP1701/3) - Push-Pull RESET High Output (AP1702/4) - 140ms min Power-On Reset Pulse Width - 12µA Supply Current - Guaranteed Reset Valid to VCC = +1V - Power Supply Transient Immunity - No External Components - 3-pin SOT23 package Applications - Computers - Controllers - Intelligent Instruments - Critical µP and µC Power Monitoring - Portable/Battery Powered Equipment - Automotive 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. 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 140ms after VCC 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 VCC, and the outputs are guaranteed to be in the correct logic state for VCC 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 SOT23 package. Pin Assignments (Top View) 1 2 GND (RESET) V CC SOT-23 AP1701 AP1702 2 3 RESET (Top View) 1 2 GND V CC SOT-23 AP1703 AP1704 2 3 (RESET) RESET Pin Descriptions Name Description GND Ground RESET (RESET) Reset output pin L: for AP1701/3 H: for AP1702/4 VCC Operating voltage input |
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