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MAX6326-26D Datasheet(PDF) 2 Page - NXP Semiconductors |
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MAX6326-26D Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 12 page Philips Semiconductors Product data MAX632x/MAX634x 3-pin ultra-low power SC70/SOT microprocessor reset circuit 2 2003 Aug 05 DESCRIPTION The MAX6326/MAX6327//MAX6328/MAX6346/MAX6347/MAX6348 microprocessor ( µP) reset circuits monitor power supplies in µP and digital systems. These devices eliminate external components and adjustments while providing excellent circuit reliability and low cost solution. They are used to monitor 2.5 V, 3 V, 3.3 V and 5 V power supplies. They assert a reset signal when the VDD supply voltage falls below a preset reset threshold voltage. The reset signal remains asserted for at least 100 ms after the VDD rises above the reset threshold. The reset threshold are factory trimmable from 2.2 V to 4.63 V in approximately 100 mV increments. All these parts are guaranteed to assert a reset for VDD down to 1 V. They have excellent immunity to fast transients on VDD. The devices vary in their output configuration. The MAX6326/MAX6346 have push-pull, active-LOW reset output; while the MAX6328/MAX6348 have open drain, active-LOW reset output. The MAX6327/MAX6347 have push-pull, active HIGH reset output. The lower threshold MAX6326/MAX6327/MAX6328 have ultra-low supply current of typically 0.5 µA making them ideal for battery powered applications. All six devices are available in both the 3-pin SOT23 and SC70 packages. FEATURES • Ultra-low 1 µA (max) supply current • Precision monitoring of 2.5 V, 3 V, 3.3 V, and 5 V power supply voltages • Reset thresholds available from 2.2 V to 4.63 V • Fully specified over temperature –40 °C to +85 °C • 100 ms (min) power-on-reset delay time • Power transient immunity • Available in three versions: Push-Pull RESET, Push-Pull RESET, and Open-Drain RESET • Pin compatible with MAX803/MAX809/MAX810 • Small, low cost, 3-pin SC70/SOT23 packages APPLICATIONS • Computers and controllers • Power monitoring • Portable/battery powered equipment • Industrial equipment SIMPLIFIED SYSTEM DIAGRAM VDD VDD VDD GND GND RESET RESET SL01835 MAX6328/ MAX6348 MOTOROLA 68HCXX RPU Figure 1. MAX6328/6348 simplified system diagram. |
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