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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 240kB) Download   E-Mail

Description

The MAX9940 signal-line overvoltage protector for low-voltage digital communication ports provides protection against high-voltage faults and ESD strikes. The MAX9940 is especially useful for sensitive communication protocols such as Maxim 1-Wire® that cannot afford standard means of fault protection, such as large series resistors or large line capacitances. The MAX9940 operates from a single supply voltage of +2.2V to +5.5V and consumes only 13µA of quiescent supply current. The EXT port is protected up to 28V. The device features a reaction time of 60ns for fast action during fault conditions and operates over the -40°C to +125°C automotive temperature range.

An evaluation kit is available:  MAX9940EVKIT  

Key Features		Applications/Uses
28V Protection on EXT Extended ESD Protection ±4kV IEC 61000-4 Contact on EXT +2.2V to +5.5V Supply Voltage Range 13µA Quiescent Supply Current 60ns Fault Reaction Time Small, 5-Pin SC70 -40°C to +125°C Temperature Range		Industrial Equipment Notebook Computers Portable Devices

Diagram

Block Diagram/Typical Application Circuit

Evaluation Kits

MAX9940EVKIT

Design Guides

Amplifiers and Sensors (PDF)

Reliability Reports

Reliability Report: MAX9940.pdf Show FIT data for: MAX9940

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-2 of 2

MAX9940	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9940AXK+			Active	SC70;5 pin;5.3 mm² Outline Drawing: 21-0076 (PDF) Land Pattern: 90-0188 (PDF) Use pkgcode/variation: X5+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9940AXK+T			Active	SC70;5 pin;5.3 mm² Outline Drawing: 21-0076 (PDF) Land Pattern: 90-0188 (PDF) Use pkgcode/variation: X5+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis

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Description   Key Features   Applications/Uses   Key Specifications   Diagram

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