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MAX9644, MAX9645, MAX9646

Low-Power Comparators with Precision Reference in 4-Bump UCSP

Deliver Ultra-Small, Low-Power Comparator Solutions for Mobile Devices

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX9644/MAX9645/MAX9646 are small, single comparators, ideal for a wide variety of portable electronics applications such as cell phones, media players, and notebooks that have extremely tight board space and power constraints. These comparators are offered in both a miniature 4-bump UCSP™ package with a 1mm x 1mm footprint (as small as two 0402 resistors) and a 5-pin SOT23 package.

The ICs feature an input voltage range of -0.3V to +5.5V, independent of supply voltage. These devices maintain high impedance at the inputs even when powered down (V_CC or V_REF = 0V). They also feature internal filtering to provide high RF immunity.

The ICs have an internal 0.2V reference. These devices feature either a push-pull or an open-drain output. They consume only 700nA (max) supply current and operate down to V_CC = 1V over the extended -40°C to +85°C temperature range.

Data Sheet

Download	Rev 1	(PDF, 251kB)
E-Mail

An evaluation kit is available: MAX9644EVKIT, MAX9645EVKIT, MAX9646EVKIT

Key Features

Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP
- Footprint = Two 0402 Resistors
- Also Available in a 5-Pin SOT23 Package
Ultra-Low Operating Current (700nA max)
-0.3V to +5.5V Input Voltage Range
Internal 0.2V Reference Trimmed to 1% Accuracy
15µs Propagation Delay
-40°C to +85°C Extended Temperature Range

Applications/Uses

Cell Phones
Electronic Toys
Notebook Computers
Portable Media Players
Portable Medical Devices

Key Specifications:

Comparators + Reference

Part Number

Comp-
arators

Thresh.
(V)

Internal Ref. Accuracy
(%)

t_PD
(µs)

V_SUPPLY
(V)

I_CC
(µA)

Prog. Hyst.

Logic Out

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

typ

min

max

max w/pins

See Notes

MAX9644

0.2

5.5

1.1

Open Drain

-40 to +85

SOT/5

UCSP/4

1.1

$0.49 @1k

MAX9645

Open Drain

SOT/5

UCSP/4

$0.49 @1k

MAX9646

Push-Pull

SOT/5

UCSP/4

$0.49 @1k

See All Comparators + Reference (47)

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.

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

Show FIT data for:
Request Reliability Report for:

Software/Models

MAX9645 Orcad Library

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9644EBS+G45			Active	UCSP;4 pin;1.1 mm² Outline Drawing:21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9644EBS+TG45			Active	UCSP;4 pin;1.1 mm² Outline Drawing:21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9644EUK+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9644EUK+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9645EBS+G45			Active	UCSP;4 pin;1.1 mm² Outline Drawing:21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9645EBS+TG45			Active	UCSP;4 pin;1.1 mm² Outline Drawing:21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9645EUK+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9645EUK+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9646EBS+G45			Active	UCSP;4 pin;1.1 mm² Outline Drawing:21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9646EBS+TG45			Active	UCSP;4 pin;1.1 mm² Outline Drawing:21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+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
MAX9646EUK+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9646EUK+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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.

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More Information

Topmark Coding	MAX9644
Topmark Coding	MAX9645
Topmark Coding	MAX9646

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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.: 19-5803 Rev 1; 2011-11-02
This page last modified: 2011-11-02

Low-Power Comparators with Precision Reference in 4-Bump UCSP

Status

Description

Data Sheet

Key Features

Applications/Uses

Key Specifications:

Product Guides

Reliability Reports

Software/Models

Ordering Information

Similar Products by Function

Similar Products by Application

Evaluation Kits

Products with Similar Part Numbers

More Information

Didn't Find What You Need?

Information Index

Overview

Technical Documents

Ordering Info

Related Products