Maxim > Products > Supervisors, Voltage Monitors, Sequencers > MAX6326, MAX6327, MAX6328, ...

MAX6326, MAX6327, MAX6328, MAX6346, MAX6347, MAX6348

3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits

Industry's Lowest-Power Reset IC Consumes Only 500nA with No External Components Required

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348 microprocessor (µP) supervisory circuits monitor the power supplies 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, 3V, 3.3V, and 5V powered circuits.

These circuits perform a single function: they assert a reset signal whenever the V_CC supply voltage declines below a preset threshold, keeping it asserted for at least 100ms after V_CC has risen above the reset threshold. The only difference between the devices is their output. The MAX6326/MAX6346 (push-pull) and MAX6328/MAX6348 (open-drain) have an active-low reset output. The MAX6327/MAX6347 have an active-high push-pull reset output. All of these parts are guaranteed to be in the correct state for V_CC down to 1V. The reset comparator is designed to ignore fast transients on V_CC. Reset thresholds are factory-trimmable between 2.2V and 4.63V, in approximately 100mV increments. Twenty-one standard versions are available. Contact the factory for availability of nonstandard versions.

Ultra-low supply currents (1µA max for the MAX6326/MAX6327/MAX6328) make these parts ideal for use in portable equipment. All six devices are available in space-saving SOT23 and SC70 packages.

Data Sheet

Download	Rev 4	(PDF, 160kB)
E-Mail

Key Features

Ultra-Low 1µA (max) Supply Current (MAX6326/MAX6327/MAX6328)
Precision Monitoring of 2.5V, 3V, 3.3V, and 5V Power-Supply Voltages
Reset Thresholds Available from 2.2V to 4.63V
Fully Specified Over Temperature
100ms (min) Power-On Reset Pulse Width
Low Cost
Available in Three Versions: Push-Pull Active-Low RESET, Push-Pull RESET, and Open-Drain Active-Low RESET
Power-Supply Transient Immunity
No External Components
3-Pin SC70/SOT23 Packages
Pin Compatible with MAX803/MAX809/MAX810

Applications/Uses

Automotive Electronics
Computers: Desktop, Workstation, Server
Controllers
Critical µP and µC Power Monitoring
Intelligent Instruments
Portable Battery-Powered Equipment

Key Specifications:

Supervisors (1 Monitored Voltage)

Part Number

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Reset Thresh. Accur.
(%)

I_CC
(µA)

Budgetary Price

min

@ +25°C

max

See Notes

MAX6326

1.8 to 2.5

2.5 to 3.3

Active Low

Push-Pull

85ms to 300ms

No Watchdog

1.5

$1.02 @1k

MAX6327

1.8 to 2.5

2.5 to 3.3

Active High

Push-Pull

$1.02 @1k

MAX6328

1.8 to 2.5

2.5 to 3.3

Active Low

Open Drain

$1.02 @1k

MAX6346

3.3 to 5.5

Active Low

Push-Pull

1.75

$1.02 @1k

MAX6347

3.3 to 5.5

Active High

Push-Pull

1.75

$1.02 @1k

MAX6348

3.3 to 5.5

Active Low

Open Drain

1.75

$1.02 @1k

See All Supervisors (1 Monitored Voltage) (274)

Pricing 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.

Diagram

Pin Configuration

Application Notes

Application Note 608		Micropower Circuit Offers Automatic Shutdown and Low-Battery Lockout
Tutorial 939		Choosing Supervisor Outputs
Application Note 1050		Reset Circuit Ensures Valid Supply Voltage
Application Note 1136		Switching Between Battery and External Power Sources
Application Note 1195		Maximize Battery Life and Minimize Replacements
Tutorial 1757		HFAN-08.2.1: PWM Temperature Controller for Thermoelectric Modules Keeps Components within 0.1°C
Application Note 2080		Simple Circuit Disconnects Load from Low-Voltage Supply
Application Note 2237		Simple Circuit Disconnects Load from Low-Voltage Supply
Application Note 3741		Analog ICs for Low Voltage Systems
Reference Design 4232		HFRD-34.0 4 x 4 DVI KVM Switch
Reference Design 4282		HFRD-33.0 HDMI and DVI, 4 x 4 Crosspoint Switch

Product Guides

Microprocessor Supervisory (PDF)

Reliability Reports

Reliability Report:	MAX6326.pdf MAX6328.pdf MAX6348.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

MAX6328 IBIS Model

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Devices: 301-347 / 347

<-- Previous 1 2 3 4 5 6 7 Next -->

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6348UR41+T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR41-T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348UR42+T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR42-T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348UR43+T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR43-T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348UR44+			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR44+T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR44-T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348UR45+			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6348UR45+T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR45-T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348UR46			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348UR46+			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR46+T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348UR46-T			Active	SOT;3 pin;8 mm² Outline Drawing:21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR33+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR33-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR34+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX6348XR34-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6348XR35+			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR35+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR35-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR36+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX6348XR36-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR37+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX6348XR37-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR38+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX6348XR38-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR39+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6348XR39-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR40+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR40-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR41+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR41-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR42+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX6348XR42-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR43+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR43-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR44+			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX6348XR44+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR44-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR45+T			Active	SC70; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX6348XR45-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX6348XR46+			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR46+T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX6348XR46-T			Active	SC70;3 pin;5.3 mm² Outline Drawing:21-0075 (PDF) Land Pattern: 90-0208 (PDF) Use pkgcode/variation: X3-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

Devices: 301-347 / 347

<-- Previous 1 2 3 4 5 6 7 Next -->

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Notes and Comments

Can monitor down to +2.5V supplies, pin-compatible with MAX809/10, push-pull active-low RESET (MAX6326)
Push-pull RESET (MAX6327)
Open-drain active-low RESET (MAX6328)

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See All Supervisors (1 Monitored Voltage) (274 Products)

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More Information

Topmark Coding	MAX6326
Topmark Coding	MAX6327
Topmark Coding	MAX6328
Topmark Coding	MAX6346
Topmark Coding	MAX6347
Topmark Coding	MAX6348
New Product Press Release	[ 2000-01-31 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1294 Rev 4; 2006-04-28
This page last modified: 2009-11-05

3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits

Status

Description

Data Sheet

Key Features

Applications/Uses

Key Specifications:

Diagram

Application Notes

Product Guides

Reliability Reports

Software/Models

Ordering Information

Notes and Comments

Similar Products by Function

Similar Products by Application

More Information

Didn't Find What You Need?

Information Index

Overview

Technical Documents

Ordering Info

Related Products