mxd1818ur31t Maxim Integrated Products, Inc., mxd1818ur31t Datasheet

mxd1818ur31t

Manufacturer Part Number

mxd1818ur31t

Description

Low-power ?p Reset Circuits In 3-pin Sc70/sot23

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MXD1818UR31T.pdf (11 pages)

Current page: 1 of 11
Download datasheet (192Kb)

The MXD1810–MXD1813/MXD1815–MXD1818 family of

microprocessor (μP) reset circuits monitor power sup-

plies in μP and digital systems. These devices provide

excellent circuit reliability and low cost by eliminating

external components and adjustments when used with

+2.5V/+3.0V/+3.3V (MXD1815–MXD1818), and +5V

(MXD1810–MXD1813) systems.

These circuits assert a reset signal whenever the V

supply voltage declines below a preset threshold,

keeping reset asserted for at least 100ms after V

rises above the reset threshold. The MXD1813/

MXD1818 also keep reset asserted for at least 100ms

after the output is momentarily pulled to GND by an

external push-button switch.

The MXD1812/MXD1817 have an active-high push-pull

RESET output. The MXD1810/MXD1815 (push-pull) and

MXD1811/MXD1813/MXD1816/MD1818 (open-drain)

have an active-low RESET output. The open-drain

devices (MXD1811/MXD1813/MXD1816/MXD1818)

have an internal pullup resistor to V

MXD1818 feature a debounced manual reset feature

that asserts a reset if the RESET pin is pulled low for

more than 1.5μs. When used to initiate manual reset,

RESET debounces signals from devices such as

mechanical switches. For devices with this feature, the

release of the external switch triggers the reset period.

The MXD1810–MXD1813/MXD1815–MXD1818 are

guaranteed to output the correct logic state for V

down to +1V. These ICs provide a reset comparator

designed to ignore fast transients on V

thresholds are available between +2.18V and +4.62V.

These small, low-power (4μA) devices are ideal for use

in portable equipment. All are available in space-saving

3-pin SC70 and SOT23 packages, and are specified

from -40°C to +105°C.

* Patent pending

19-2243; Rev 1; 12/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Computers and Controllers

Intelligent Instruments

Set-Top Boxes

Printers

Automotive Systems

Critical μP and μC Monitoring

Portable/Battery-Powered Equipment

________________________________________________________________ Maxim Integrated Products

General Description

Low-Power μP Reset Circuits in 3-Pin

Applications

. The MXD1813/

. Reset

o Precision Monitoring of +2.5V, +3V, +3.3V, and

o Available in Four Reset Output Configurations

o Factory-Set Reset Threshold Voltages: 2.18V,

o ±2.5% Reset Threshold Accuracy Over

o Fixed Reset Timeout Period: 100ms (min)

o Guaranteed RESET/RESET Valid to V

o Debounced Manual Reset

o Power-Supply Transient Immunity

o No External Components

o Low Power Consumption (4μA)

o Pin Compatible with DS181_ Products (SOT23)

o 3-Pin SC70 and SOT23 Packages

†

with factory-set V

(MXD1815–MXD1818) and +4.12V to +4.62V (MXD1810–

MXD1813). Choose the desired reset-threshold suffix from the

Reset Threshold Table and insert it in place of the “_ _” follow-

ing “R” in the part number. All devices are available in tape-

and-reel only in 2500 unit increments. Other threshold

voltages may be available. Contact factory for availability.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

Ordering Information continued at end of data sheet.

The MXD1810–MXD1813/MXD1815–MXD1818 are available

TOP VIEW

MXD1810UR_ _-T

MXD1810XR_ _-T

(RESET)

+5V Power-Supply Voltages

2.31V, 2.55V, 2.88V, 3.06V, 4.12V, 4.37V, 4.62V

Temperature

Detect (MXD1813/MXD1818)

RESET

PART

MXD181_X

SC70-3

†

reset thresholds from +2.18V to +3.06V

() ARE FOR THE MXD1812/MXD1817

-40

Ordering Information

TEMP RANGE

GND

C to +105

SC70/SOT23

Pin Configurations

(RESET)

RESET

MXD181_U

SOT23-3

PIN-PACKAGE

3 SOT23-3

3 SC70-3

Features

= +1V

GND

Related parts for mxd1818ur31t

mxd1818ur31t Summary of contents

Page 1

Rev 1; 12/05 Low-Power μP Reset Circuits in 3-Pin General Description The MXD1810–MXD1813/MXD1815–MXD1818 family of microprocessor (μP) reset circuits monitor power sup- plies in μP and digital systems. These devices provide excellent circuit reliability and low cost by eliminating ...

Page 2

Low-Power μP Reset Circuits in 3-Pin SC70/SOT23 ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.0V CC Push-Pull RESET (MXD1810/MXD1815), RESET (MXD1812/MXD1817) to GND.....-0. Open-Drain RESET (MXD1811/MXD1816) to GND................................................................-0.3V to +6.0V Open-Drain RESET (MXD1813/MXD1818) to GND ....................................................-0.3V to ...

Page 3

Low-Power μP Reset Circuits in 3-Pin ELECTRICAL CHARACTERISTICS (continued full range -40°C to +105°C, unless otherwise specified. Typical values are PARAMETER SYMBOL Output High Voltage Output Capacitance (Note 2) Internal Pullup Resistor ...

Page 4

Low-Power μP Reset Circuits in 3-Pin SC70/SOT23 (T = +25°C, unless otherwise noted.) A OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT 0.5 0.4 0.3 0.2 0 0.5 1.0 1.5 OUTPUT CURRENT (mA) MXD1810/MXD1815 PIN NAME SC70 SOT23 RESET 2 ...

Page 5

Low-Power μP Reset Circuits in 3-Pin MXD1812/MXD1817 PIN NAME SC70 SOT23 2 1 RESET GND MXD1813/MXD1818 PIN NAME SC70 SOT23 RESET GND Detailed Description RESET /RESET ...

Page 6

Low-Power μP Reset Circuits in 3-Pin SC70/SOT23 MXD1810 MXD1812 MXD1815 MXD1817 V CC RESET GENERATOR V REF Figure 1. Functional Diagram, Push-Pull Output MXD1813 MXD1818 MONITOR RESET GENERATOR V REF Figure 3. Functional Diagram, Open-Drain Active-Low Output ...

Page 7

Low-Power μP Reset Circuits in 3-Pin CC(MIN) RESET t RP RESET Figure 4. Power-Up Reset Timing Diagram V CC (OPEN) (OPEN) EXTERNAL PUSH BUTTON RESET Figure 6. Manual Reset Timing Diagram MXD1817 applications ...

Page 8

Low-Power μP Reset Circuits in 3-Pin SC70/SOT23 MXD1811 MXD1816 RESET RESET GND Figure 7. Interfacing to Microprocessors with Bidirectional Reset Pins MXD1810 MXD1815 RESET R PULLDOWN GND *MXD1810/MXD1815 ONLY Figure 8. Ensuring ...

Page 9

Low-Power μP Reset Circuits in 3-Pin PART 5V SYSTEMS ✔ MXD1810 ✔ MXD1811 ✔ MXD1812 ✔ MXD1813 MXD1815 — MXD1816 — MXD1817 — MXD1818 — Ordering Information (continued) † PART TEMP RANGE o o MXD1811UR_ _-T - +105 ...

Page 10

Low-Power μP Reset Circuits in 3-Pin SC70/SOT23 (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 10 ______________________________________________________________________________________ Package Information ...

Page 11

... Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2005 Maxim Integrated Products SC70/SOT23 Package Information (continued registered trademark of Maxim Integrated Products, Inc. ...

Related keywords

mxd1818ur31t datasheet
mxd1818ur31t data sheet
mxd1818ur31t pdf datasheet
mxd1818ur31t component
mxd1818ur31t part
mxd1818ur31t distributor
mxd1818ur31t RoHS
mxd1818ur31t datasheet download