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Maxim > Products > Supervisors, Voltage Monitors, Sequencers 
MAX6315
Open-Drain SOT µP Reset Circuit

Open-Drain Output SOT Reset IC with Customized Reset Thresholds and Timeout Delays


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Data Sheet
FULL DATA SHEET (PDF, 536kB)
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Description
The MAX6315 low-power CMOS microprocessor (µP) supervisory circuit is designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments. The MAX6315 also provides a debounced manual reset input.

This device performs a single function: it asserts a reset signal whenever the VCC supply voltage falls below a preset threshold or whenever manual reset is asserted. Reset remains asserted for an internally programmed interval (reset timeout period) after VCC has risen above the reset threshold or manual reset is deasserted. The MAX6315's open-drain active-low RESET output can be pulled up to a voltage higher than VCC.

The MAX6315 comes with factory-trimmed reset threshold voltages in 100mV increments from 2.5V to 5V. Preset timeout periods of 1ms, 20ms, 140ms, and 1120ms (minimum) are also available. The device comes in a SOT143 package.

For microcontrollers (µCs) and µPs with bidirectional reset pins, see the MAX6314 data sheet.

Key Features   Applications/Uses
  • Small SOT143 Package
  • Open-Drain RESET-bar Output Can Exceed VCC
  • Precision, Factory-Set VCC Reset Thresholds: 100mV Increments from 2.5V to 5V
  • Four Reset Timeout Periods Available: 1ms, 20ms, 140ms, or 1120ms (minimum)
  • Immune to Short VCC Transients
  • 5µA Supply Current
  • Pin-Compatible with MAX811
  • Guaranteed Over Temperature

 
  		• Computers: Desktop, Workstation, Server
  		• Controllers
  		• Critical µP and µC Power Monitoring
  		• Intelligent Instruments
  		• Portable Battery-Powered Equipment

    Key Specifications:   Supervisors (1 Monitored Voltage)
    Part Number Reset Threshold Range (V) Active-Low Reset Output Min. Reset Timeout Range Watchdog Feature Supervisor Features Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX6315  2.5 to 3.3
    3.3 to 5.5     		Open Drain 15ms to 85ms
    1ms to 15ms
    85ms to 300ms
    >1s     		No Watchdog Manual Reset 1.8 12 Yes SOT-143/4 8 -40 to +85
    0 to +70     		$0.99 @ 1k
    See All Supervisors (1 Monitored Voltage) (268)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX6315: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 279: Supervisory Circuits Keep Your Microprocessor Under Control - MAX6315

    Evaluation Kits
    none

    Design Guides
  		• MICROPROCESSOR SUPERVISORY (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Reliability Report: MAX6315USxxDx.pdf

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-416 of 416

    MAX6315 Free
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