MAX691ACPE+

Power Supply Management Circuit, Adjustable, 1 Channel, CMOS, PDIP16, DIP-16
3,505 Effective Inventory

MAX691ACPE+

Effective Inventory3,505

Power Supply Management Circuit, Adjustable, 1 Channel, CMOS, PDIP16, DIP-16

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MAX691ACPE+ DataSheet
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MAX691ACPE+ Details

General DescriptionThe MAX691A/MAX693A/MAX800L/MAX800M microprocessor (µP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30µA supply current, 200ms typ reset active delay on power-up, and 6ns chip enable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET output that is valid with VCC down to 1V. The MAX691A/MAX800L have a 4.65V typical reset-threshold voltage, and the MAX693A/MAX800M’s reset threshold is 4.4V typical. The MAX800L/MAX800M guarantee power-fail accuracies to ±2%.Features♦ 200ms Power-OK/Reset Timeout Period♦ 1µA Standby Current, 30µA Operating Current♦ On-Board Gating of Chip-Enable Signals, 10ns Max Delay♦ MaxCap™ or SuperCap™ Compatible♦ Guaranteed RESET Assertion to VCC = +1V♦ Voltage Monitor for Power-Fail or Low-Battery Warning♦ Power-Fail Accuracy Guaranteed to ±2% (MAX800L/M)♦ Available in 16-Pin Narrow SO and Plastic DIP PackagesApplications Computers Controllers Intelligent Instruments Automotive Systems Critical µP Power Monitoring

MAX691ACPE+

Key Features

  • The MAX691ACPE+ is designed with flexibility in mind, featuring manual reset input and watchdog timer function.
  • It has a wide operating supply voltage range from +4V to +18V, allowing it to be used in various systems.
  • This component's compact size and low power consumption make it ideal for space-constrained applications or battery-powered devices.

Application

  • Server farms
  • Automated controllers
  • Instrument calibration

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Pbfree Code Yes Rohs Code Yes
Part Life Cycle Code Transferred Part Package Code DIP
Pin Count ! 16 Reach Compliance Code compliant
ECCN Code EAR99 HTS Code ! 8542.39.00.01
Additional Feature ! RESET THRESHOLD VOLTAGE IS 4.65V Adjustable Threshold YES
Analog IC - Other Type POWER SUPPLY MANAGEMENT CIRCUIT JESD-30 Code R-PDIP-T16
JESD-609 Code e3 Length 19.175 mm
Moisture Sensitivity Level 1 Number of Channels 1
Number of Functions 1 Number of Terminals 16
Operating Temperature-Max 70 °C Operating Temperature-Min
Package Body Material PLASTIC/EPOXY Package Code DIP
Package Equivalence Code DIP16,.3 Package Shape RECTANGULAR
Package Style IN-LINE Peak Reflow Temperature (Cel) 260
Power Supplies ! 5 V Qualification Status ! Not Qualified
Seated Height-Max 4.572 mm Supply Current-Max (Isup) 0.1 mA
Supply Voltage-Max (Vsup) 5.5 V Supply Voltage-Min (Vsup)
Supply Voltage-Nom (Vsup) 4.75 V Surface Mount ! NO
Technology CMOS Temperature Grade ! COMMERCIAL
Terminal Finish MATTE TIN Terminal Form ! THROUGH-HOLE
Terminal Pitch ! 2.54 mm Terminal Position DUAL
Threshold Voltage-Nom +4.65V Time@Peak Reflow Temperature-Max (s) 30
Width 7.62 mm

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification MAX691ACPE+ PDF Download

FAQs

What is MAX691ACPE+?

The MAX691ACPE+ is a microprocessor supervisor circuit designed by Maxim Integrated. It monitors the power supply voltage and keeps the microprocessor in reset until the voltage reaches the proper operating level, ensuring reliable system startup and operation.

How Does MAX691ACPE+ Work?

The MAX691ACPE+ works by continuously monitoring the power supply voltage. When the voltage falls below a specified threshold, the reset output is activated, holding the microprocessor in a reset state. Once the voltage rises above the threshold and stabilizes, the reset signal is released, allowing the microprocessor to start operation.

How Many Pins does MAX691ACPE+ have and What are the Functions of the Pinout Configuration?

The MAX691ACPE+ is housed in a 16-pin PDIP (Plastic Dual-In-Line Package) package. The pinout configuration includes:

  • VCC: Positive power supply pin.
  • GND: Ground pin.
  • MR: Manual reset pin for external reset control.
  • RESET: Reset output to the microprocessor.
  • V+: Voltage monitor pin.
  • THRS: Threshold adjust pin for setting the monitoring threshold.
  • CT: Capacitor pin for timing adjustments.
  • Watchdog Timer Pins: Pins for watchdog timer configuration.

What are the Pros and Cons of MAX691ACPE+?

Pros:

  • Power Supply Monitoring: Ensures reliable operation by monitoring the power supply voltage.
  • Reset Functionality: Provides a reset signal to prevent erratic behavior during power-up or voltage fluctuations.
  • Manual Reset: Includes a manual reset pin for external reset control.
  • Adjustable Threshold: Allows users to set the voltage monitoring threshold for flexibility.
  • Watchdog Timer: Supports watchdog timer functionality for added system reliability.

Cons:

  • External Components: May require additional external components such as capacitors for timing adjustments.
  • Complexity: Requires understanding of threshold voltage settings and timing considerations for optimal performance.
  • Package Size: The 16-pin PDIP package may take up more board space compared to smaller packages.

Are There Any Equivalents/Alternatives to MAX691ACPE+ for Recommendation?

  • The MAX823 from Maxim Integrated is a similar microprocessor supervisor circuit with slightly different features.
  • Alternatives to the MAX691ACPE+ include the ADM803 from Analog Devices and the TPS3600 from Texas Instruments.

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