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Status
Part Number	Status
DS9502	Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.

Data Sheet

FULL DATA SHEET (PDF, 72kB) Download   E-Mail

Description

This DS9502 is an ESD protection device for 1-Wire® interfaces. If used with circuits that already have strong ESD production at their I/O port, the ESD protection level is raised to more than 27kV (IEC 801-2 reference model). In case of abnormal ESD hits beyond its maximum ratings the DS9502 will eventually fail "short" thus preventing further damage. During normal operation the DS9502 behaves like a regular 7.5V Zener diode. When the voltage exceeds the trigger voltage, the I/V characteristic of the device will "snapback" allowing the same or higher amount of current to flow, but at a significantly lower voltage. As long as a minimum current or voltage is maintained, the device will stay in the "snapback mode." If the voltage or the current falls below the holding voltage or holding current, the device will abruptly change to its normal mode and conduct only a small leakage current.

Key Features

Zener characteristic with voltage snap-back to protect against ESD hits High avalanche voltage, low leakage and low capacitance avoid signal attenuation Compatible to all 5V logic families Space-saving, low-inductance TSOC surface-mount package Symmetric dual-port bondout to maximize energy dissipation in protection device Industrial temperature range

Diagram

Typical Application Circuit

Design Guides

1-Wire® Products (PDF)

Reliability Reports

Reliability Report: DS9502.pdf

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: 1-4 of 4

DS9502	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS9502P/T&R		N/A	No Longer Available	TSOC;6 pin;17.8 mm² Outline Drawing: 21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS9502P		N/A	No Longer Available	TSOC;6 pin;17.8 mm² Outline Drawing: 21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS9502P+			Active	TSOC;6 pin;17.8 mm² Outline Drawing: 21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS9502P+T&R			Active	TSOC;6 pin;17.8 mm² Outline Drawing: 21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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