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Data Sheet

FULL DATA SHEET (PDF, 128kB) Download   E-Mail

Description

The MAX4505 is a single signal-line protector featuring a fault-protected input and rail-to-rail signal handling capability. The input is protected from overvoltage faults up to ±36V with power on or ±40V with power off. During a fault condition, the input terminal becomes an open circuit and only nanoamperes of leakage current flow from the source, while the switch output (AOUT) furnishes typically 19mA from the appropriate polarity supply to the load. This ensures an unambiguous rail-to-rail output when a fault begins and ends. The MAX4505 protects both unipolar and bipolar analog signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies. The device has no logic control inputs; the protector is always on when the supplies are on. On-resistance is 100Ω max, and on-leakage is less than 0.5nA at TA = +25°C. The MAX4505 is available in 5-pin SOT23 and 8-pin µMAX® packages.

Key Features		Applications/Uses
Overvoltage Protection ±40V with Power Off ±36V with Power On Open Signal Paths with Power Off Output Clamps to Either Rail with an Input Overvoltage 100Ω max On-Resistance 10ns Overvoltage Turn-On Delay No Latchup During Power Sequencing Rail-to-Rail Signal Handling 500Ω Output Clamp Resistance During Overvoltage Tiny 5-Pin SOT23 Package		Automated Test Equipment (ATE) Data Acquisition Hot-Insertion Boards/Systems Process Control Systems Redundant/Backup Systems Sensitive Instruments

Diagram

Typical Operating Circuit

Application Notes

Application Note 745: Fault-Tolerant Analog Switches - MAX4505

Evaluation Kits

none

Design Guides

MUX & SWITCH (PDF)

Reliability Reports

Show FIT data for: MAX4505 Request Reliability Report for: MAX4505

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: 1-6 of 6
MAX4505	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4505EUK+			SOT-23;5 pin;9 mm² Dwg: 21-0057F (PDF) Use pkgcode/variation: U5+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4505EUK			SOT-23;5 pin;9 mm² Dwg: 21-0057F (PDF) Use pkgcode/variation: U5-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4505EUK-T			SOT-23;5 pin;9 mm² Dwg: 21-0057F (PDF) Use pkgcode/variation: U5-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4505EUK+T			SOT-23;5 pin;9 mm² Dwg: 21-0057F (PDF) Use pkgcode/variation: U5+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4505EUA			uMAX;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4505EUA-T			uMAX;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

More Information

Topmark Coding: MAX4505 New Product Press Release 1999-08-02

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