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3.3V EconoReset

Product Details

Key Features

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active Low
Open Drain
With Internal Pull-Up
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 50
Package/Pins ST223/3
TO92/3
Budgetary
Price (See Notes)
0.91
View Less

Simplified Block Diagram

Technical Docs

Data Sheet 3.3V EconoReset Feb 22, 2002

Support & Training

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active Low
Open Drain
With Internal Pull-Up
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 50
Package/Pins ST223/3
TO92/3
Budgetary
Price (See Notes)
0.91

Key Features

  • Automatically restarts microprocessor after power failure
  • Monitors pushbutton for external override
  • Internal circuitry debounces pushbutton switch
  • Maintains reset for 350ms after VCC returns to an in-tolerance condition or pushbutton released
  • Accurate 10% or 15% microprocessor 3.3V power supply monitoring
  • Reduces need for discrete components
  • Precision temperature-compensated voltage reference and voltage sensor
  • Low-cost TO-92 package or surface mount SOT-223 package
  • Internal 5kΩpull-up resistor
  • Operating temperature of -40°C to +85°C

Applications/Uses

Description

The DS1233A EconoReset monitors two vital conditions for a microprocessor: power supply and external override. A precision temperature-compensated reference and comparator circuit are used to monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 350ms to allow the power supply and processor to stabilize. The second function of the DS1233A is pushbutton reset control. The DS1233A debounces a pushbutton closure and will generate a 350ms reset pulse upon release.

Simplified Block Diagram

DS1233A: Block Diagram DS1233A: Block Diagram Zoom icon

Technical Docs

Data Sheet 3.3V EconoReset Feb 22, 2002

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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.