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DS1832
3.3 Volt MicroMonitor Chip


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Description
FULL DATA SHEET (PDF, 120kB)
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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.

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

Key Specifications:   Microprocessor Supervisors
Part Number Number of Monitored Voltages Reset Threshold Range (V) Active-Low Reset Output Active-High Reset Output Min. Reset Timeout Range Watchdog Feature Nom. Watchdog Timeout Range Supervisor Features Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) Package Smallest Available Package (max w/pins) (mm2) RoHS Available Operating Temp. Range (°C) Price*
DS1832  1 2.5 to 3.3 Push-Pull Push-Pull 85ms to 300ms No Watchdog 1s to 2s
<1s
Manual Reset 2.5 35 PDIP/8
SOIC/8
uSOP/8
16 Yes -40 to +85
0 to +70
$1.17 @ 1k
See All Microprocessor Supervisors (435)

Key Specifications:   Supervisors (1 Monitored Voltage)
Part Number Reset Threshold Range (V) Active-Low Reset Output Active-High Reset Output Min. Reset Timeout Range Watchdog Feature Nom. Watchdog Timeout Range Supervisor Features Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) Supervisor Functions Package Smallest Available Package (max w/pins) (mm2) RoHS Available Operating Temp. Range (°C) Price*
DS1832  2.5 to 3.3 Push-Pull Push-Pull 85ms to 300ms No Watchdog 1s to 2s
<1s
Manual Reset 2.5 35 Simple Reset/ Power-On Reset PDIP/8
SOIC/8
uSOP/8
16 Yes -40 to +85
0 to +70
$1.17 @ 1k
See All Supervisors (1 Monitored Voltage) (275)
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.

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    1999-11-20
    This page last modified: 2007-07-25




             



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