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3.3 Volt MicroMonitor Chip

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 High
Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Watchdog Timeout 1s to 2s
<1s
Supervisor Features Manual Reset
ICC (µA) (max) 35
Package/Pins PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.54
View Less

Simplified Block Diagram

Technical Docs

Data Sheet 3.3 Volt MicroMonitor Chip Nov 20, 1999

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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 High
Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Watchdog Timeout 1s to 2s
<1s
Supervisor Features Manual Reset
ICC (µA) (max) 35
Package/Pins PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.54

Key Features

  • Power-fail detection
  • Pushbutton reset
  • Watchdog timer
  • Active high and low resets
  • Quiescent current less than 35µA
  • Operating ranges:
    • -40°C to +85°C
    • 3.0V with 20% tolerance or
    • 3.3V with 10% or 20% tolerance

Applications/Uses

Description

The DS1832 3.3-volt MicroMonitor Chip is pin-compatible with the industry-standard DS1232 and operates in both 3.0- and 3.3-volt environments. Like the DS1232, the DS1832 monitors power supply, software execution, and an external pushbutton override. It is designed with CMOS outputs and is capable of maintaining a valid output on the active low reset to 0 volts with a 100kΩ pull-down resistor. On power-up, the DS1832 holds reset for 250ms to allow the system to stabilize.

Moving a design from 5 volts to 3.3 volts can be as simple as substituting the DS1832 for the DS1232 and removing the pull-up resistor on the active low reset. This makes it a versatile, space- and cost-saving monitor for any processor-driven system requiring reliable operation.

Simplified Block Diagram

DS1832: Block Diagram DS1832: Block Diagram Zoom icon

Technical Docs

Data Sheet 3.3 Volt MicroMonitor Chip Nov 20, 1999

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 .