DS1233-10+ Maxim Integrated Products, DS1233-10+ Datasheet

DS1233-10+

Manufacturer Part Number

DS1233-10+

Description

IC ECONORESET 5V 10% TO92-3

Manufacturer

Maxim Integrated Products

Series

EconoResetr

Type

Simple Reset/Power-On Resetr

Datasheet

1.DS1233-15.pdf (5 pages)

Specifications of DS1233-10+

Number Of Voltages Monitored

Output

Open Drain or Open Collector

Reset

Active Low

Reset Timeout

250 ms Minimum

Voltage - Threshold

4.375V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Through Hole

Package / Case

TO-92-3 (Standard Body), TO-226

Monitored Voltage

5 V

Undervoltage Threshold

4.25 V

Overvoltage Threshold

4.49 V

Manual Reset

Resettable

Watchdog

Battery Backup Switching

Power-up Reset Delay (typ)

450 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1.2 V

Supply Current (typ)

50 uA

Mounting Style

Through Hole

Maximum Operating Temperature

+ 85 C

Chip Enable Signals

Minimum Operating Temperature

- 40 C

Operating Supply Voltage

5 V

Output Type

Active Low or Open Drain

Power Fail Detection

Yes

08+

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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FEATURES

§ Automatically restarts microprocessor after

§ Monitors pushbutton for external override

§ Internal circuitry debounces pushbutton

§ Maintains reset for 350ms after V

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

§ Reduces need for discrete components

§ Precision temperature-compensated voltage

§ Low-cost TO-92 package or surface-mount

§ Internal 5kW pull-up resistor

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

DESCRIPTION

The DS1233 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 (V

signal is generated which forces reset to the active state. When V

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 DS1233 is pushbutton reset control. The DS1233

debounces a pushbutton closure and will generate a 350ms reset pulse upon release.

OPERATION — POWER MONITOR

The DS1233 provides the functions of detecting out-of-tolerance power supply conditions and warning a

processor-based system of impending power failure. When V

defined by the tolerance of the part selected, the

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

supply and microprocessor to stabilize before

www.maxim-ic.com

power failure

switch

an in-tolerance condition or pushbutton

released

5V power supply monitoring

reference and voltage sensor

SOT-223 package

). When an out-of-tolerance condition is detected, an internal power-fail

returns to

RST

1 of 5

is released.

signal is asserted. On power-up,

PIN ASSIGNMENT

PIN DESCRIPTION

PIN 1

PIN 2

PIN 3

PIN 4

TO-92 PACKAGE

BOTTOM VIEW

Drawings Section

on Website

See Mech.

DALLAS

1 2 3

DS1233

Econo

Reset

GROUND

GROUND (SOT-223 ONLY)

RESET

returns to an in-tolerance condition,

is detected as out-of-tolerance, as

5V EconoReset

SOT-223 PACKAGE

Drawings Section

TOP VIEW

on Website

See Mech.

RST

DS1233

is kept active

122001

Related parts for DS1233-10+

DS1233-10+ Summary of contents

Page 1

... When V 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 DS1233 is pushbutton reset control. The DS1233 debounces a pushbutton closure and will generate a 350ms reset pulse upon release. ...

Page 2

... DS1233 will debounce the switch by pulling the expired, the DS1233 will continue to monitor the continue to monitor the line looking for a rising edge. Upon detecting a release, the DS1233 will force the line low and hold it low for 350ms. RST NOTE: For proper operation with an external pushbutton, a capacitor between 100pF and 0 ...

Page 3

PUSHBUTTON RESET Figure 3 POWER UP Figure 4 POWER DOWN Figure ...

Page 4

ABSOLUTE MAXIMUM RATINGS* Voltage on V Pin Relative to Ground CC Voltage on I/O Relative to Ground Operating Temperature Range Storage Temperature Range Soldering Temperature * This is a stress rating only and functional operation of the device at these ...

Page 5

... ECONORESET SELECTION GUIDE DS1233-15 DS1233-10 DS1233-5 DS1233D-15 5V DS1233D-10 DS1233D-5 DS1833-15 DS1833-10 DS1833-5 DS1233A-15 3.3V DS1233A-10 V TRIP POINT CC MIN TYP MAX 4.0 4.125 4.24 4.25 4.375 4.49 4.5 4.625 4.75 4.0 4.125 4.24 4.25 4.375 4.49 4.5 4.625 4.75 4.0 4.125 4.24 4 ...

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