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Microprocessor supervisor is ultrasmall

Posted: 04 Aug 2009 ?? ?Print Version ?Bookmark and Share

Keywords:microprocessor? supervisor? capacitor?

Maxim Integrated Products has released the MAX16055, hex-voltage microprocessor supervisor with integrated reset timing, which eliminates the need for an external capacitor.

The device has a 3mm x 3mm footprint and comes in ten versions to suit low-voltage monitoring in all kinds of multivoltage systems such as telecommunications, networking equipment, storage devices, high-end printers, and computers.

Whenever one of the six monitored voltages falls below its threshold, the open-drain reset output asserts and remains asserted for at least 140ms after all six voltages exceed their respective thresholds. The reset output is internally pulled up to Vcc to eliminate the need for an external resistor, but can be overdriven to accommodate other logic devices. A manual reset is also provided.

Ten versions of the MAX16055 provide different thresholds and supply tolerances to meet all low-voltage system requirements. Preset thresholds for monitoring 3.3-, 3-, 2.5-, 1.8-, 1.5-, 1.2-, 1.1-, 1- and 0.9V supplies with -5 percent and -10 percent tolerance are available; additionally, adjustable versions are available to accommodate most of today's standard logic devices.

In addition, the device operates from 1V to 5.5V with the power derived from one of the monitored inputs, eliminating the need for a separate Vcc pin. The MAX16055 consumes only 25?A of quiescent current. Fully specified over the -40C to +125C automotive temperature range, the MAX16055 is available in a space-saving, 3mm x 3mm, 10-pin microMAX package. Prices start at $2.33, for order of 2,500-up, FOB USA.

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