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MAX16997 - (MAX16997 / MAX16998) High-Voltage Watchdog Timers

General Description

The MAX16997/MAX16998 are microprocessor (µP) supervisory circuits for high-input-voltage and low-quiescent-current applications.

These devices detect downstream circuit failures and provide switchover to redundant circuitry.

See the Selector Guide for the different versions of this product family.

Key Features

  • MAX16997/MAX16998 o Small (3mm x 3mm) µMAX Package o WDI Narrow Pulse Immunity Ordering Information PART MAX16997AAUA+ MAX16998AAUA+ MAX16998BAUA+ MAX16998DAUA+ TEMP RANGE -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C PIN-.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4000; Rev 1; 4/09 High-Voltage Watchdog Timers with Adjustable Timeout Delay General Description The MAX16997/MAX16998 are microprocessor (µP) supervisory circuits for high-input-voltage and low-quiescent-current applications. These devices detect downstream circuit failures and provide switchover to redundant circuitry. See the Selector Guide for the different versions of this product family. The MAX16997/MAX16998 family has four independent inputs for reset and watchdog functions. SWT and SRT inputs independently set the timeout periods of watchdog and reset timers through external capacitors. RESETIN/EN monitor voltages at respective inputs. A resistive voltage-divider sets the reset threshold. The MAX16998A/B/D generate two output signals, RESET and ENABLE .