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041002

FEATURES

§ Automatically restarts microprocessor after

power failure

§ Maintains active-high reset for 350 ms after

§ Accurate 5%, 10% or 15% microprocessor 5V

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 5k pull-up resistor

§ Operating temperature of -40°C to +85°C

PIN ASSIGNMENT

PIN DESCRIPTION

PIN 1

Ground

PIN 2

Reset

PIN 3

PIN 4

Ground (SOT-223 only)

DESCRIPTION

The DS1833 EconoReset uses a precision temperature compensated reference and comparator circuit to

tolerance condition, the reset signal is kept in the active state for approximately 350 ms to allow the

power supply and processor to stabilize.

OPERATION - POWER MONITOR

The DS1833 provides the functions of detecting out-of-tolerance power supply conditions and warning a

defined by the tolerance of the part selected, the RST signal is asserted. On power-up, RST is kept active

for approximately 350 ms after the power supply has reached the selected tolerance. This allows the

power supply and microprocessor to stabilize before RST is released.

DS1833

5V EconoReset

www.maxim-ic.com

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1 2 3

BOTTOM VIEW

TO-92 PACKAGE

See Mech.

Drawings Section

On Website

2

3

4

TOP VIEW

SOT-23 PACKAGE

See Mech.

Drawings Section

On Website

1

DALLAS

DS1833

Econo

Reset