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MAX7705
µP Power Supply Monitor with Reset

Power Supply Monitor with Reset


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Description
FULL DATA SHEET (PDF, 70kB)
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In applications with microprocessors (µPs) that have a RESET input, the MAX7705 is functionally and socket compatible with the TL7705, but requires no external components. It provides power-supply glitch immunity and a guaranteed power-up reset delay, while typically consuming 1/27th the power from a +5V supply.

The MAX7705 monitors the power supply in µP and digital systems. The RESET output is valid for VCC down to 1V. The device offers excellent circuit reliability and low cost by eliminating external components and adjustments.

A system reset is provided during power-up, power-down, and brownout conditions. When VCC is below the reset threshold, RESET is low and holds the µP in reset. RESET will go high 280ms after VCC rises above the reset threshold. The MAX7705 is available in 8-pin DIP and SO packages.

Key Features   Applications/Uses
  • No External Components
  • Low Cost
  • Precise Reset Threshold
  • 280ms Power-On Reset Delay
  • 8-Pin DIP and SO Packages

 
  • Minimum Component Count Low-Cost Processor Systems

    Key Specifications:   Supervisors (1 Monitored Voltage)
    Part Number Reset Threshold Range (V) Active-Low Reset Output Min. Reset Timeout Range Watchdog Feature Max. ICC (µA) RoHS Available Package Operating Temp. Range (°C) Price**
    MAX7705  3.3 to 5.5 Push-Pull 85ms to 300ms No Watchdog 150 Yes PDIP/8 -40 to +85
    0 to +70
    $1.13 @ 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
    MAX7705: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-0151; Rev 0; 1993-06-01
    This page last modified: 2007-05-30



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