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Ultra-Small, Adjustable Sequencing/Supervisory Circuits

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • 1.8% Accurate Adjustable Threshold Over Temperature
  • Operate from VCC of 1.5V to 5.5V
  • Capacitor-Adjustable Delay
  • Active-High/-Low Enable Input Options
  • Active-High/-Low Output Options
  • Open-Drain (28V Tolerant)/Push-Pull Output Options
  • Low Supply Current (10µA, typ)
  • Fully Specified from -40°C to +125°C
  • Ultra-Small 6-Pin µDFN Package or Thin SOT23 Package
  • AEC-Q100 Qualified (MAX6896AAZT/V+, MAX6895AAZT/V+T, and MAX6897AAZT/V+ Only)

Applications/Uses

  • Automotive
  • Computers/Servers
  • Critical µP Monitoring
  • Intelligent Instruments
  • Medical Equipment
  • Portable Equipment
  • Set-Top Boxes
  • Telecom

Description

The MAX6895–MAX6899 is a family of small, low-power, voltage-monitoring circuits with sequencing capability. These miniature devices offer tremendous flexibility with an adjustable threshold capable of monitoring down to 0.5V and an external capacitor-adjustable time delay. These devices are ideal for use in power-supply sequencing, reset sequencing, and power-switching applications. Multiple devices can be cascaded for complex sequencing applications.

A high-impedance input with a 0.5V threshold allows an external resistive divider to set the monitored threshold. The output asserts (OUT = high or active-low OUT = low) when the input voltage rises above the 0.5V threshold and the enable input is asserted (ENABLE = high or active-low ENABLE = low). When the voltage at the input falls below 0.5V or when the enable input is deasserted (ENABLE = low or active-low ENABLE = high), the output deasserts (OUT = low or active-low OUT = high). All devices provide a capacitor-programmable delay time from when the input rises above 0.5V to when the output is asserted. The MAX689_A versions provide the same capacitor-adjustable delay from when enable is asserted to when the output asserts. The MAX689_P devices have a 1µs propagation delay from when enable is asserted to when the output asserts.

The MAX6895A/P offers an active-high enable input and an active-high push-pull output. The MAX6896A/P offers an active-low enable input and an active-low push-pull output. The MAX6897A/P offers an active-high enable input and an active-high open-drain output. Finally, the MAX6898A/P offers an active-low enable input and an active-low open-drain output. The MAX6899A/P offers an active-low enable with an active-high push-pull output.

All devices operate from a 1.5V to 5.5V supply voltage and are fully specified over the -40°C to +125°C operating temperature range. These devices are available in ultra-small 6-pin µDFN (1.0mm x 1.5mm) and thin SOT23 (1.60mm x 2.90mm) packages.

Simplified Block Diagram

MAX6895, MAX6896, MAX6897, MAX6898, MAX6899: Typical Operating Circuit MAX6895, MAX6896, MAX6897, MAX6898, MAX6899: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .