MAX3185

±15kV ESD-Protected, EMC Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs

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Status Explanations for product status codes

Active: In Production.

Description

The MAX3185 is a complete DTE RS-232 serial port designed to meet the stringent ESD requirements of the European community. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

The MAX3185 has three RS-232 transmitters, five RS-232 receivers, and no charge pump, optimizing it for operation in desktop PC and motherboard applications. It is guaranteed to run at data rates up to 230kbps, providing compatibility with popular software for communicating with personal computers. Power-supply current is less than 300µA for IDD and ISS, and less than 1mA for ICC.

The MAX3185 is pin and functionally compatible with the industry-standard 75185, so existing designs can instantly become EMC compliant. The MAX3185 is available in an SO package and in the tiny SSOP that further reduces board space.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 0 (PDF, 65kB)
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Key Features

  • Enhanced ESD Protection:
    • ±15kV—Human Body Model
    • ±8kV—IEC 1000-4-2, Contact Discharge
    • ±15kV—IEC 1000-4-2, Air-Gap Discharge
  • Latchup Free During an ESD Event
  • 20-Pin SSOP and SO Packages
  • Guaranteed 230kbps Data Rate
  • Flow-Through Pinout
  • Pin Compatible with SN75C185
  • Complete DTE Serial Port
 

Applications/Uses

  • Computers: Desktop, Workstation, Server
  • Equipment Meeting IEC 1000-4-2
  • Instruments
  • Motherboards
   

Key Specifications:

RS-232 Line Driver/Receivers
Part Number VSUPPLY
(V)
Tx Rx Data Rate
(kbps)
ICC
(mA)
Internal Charge Pump Ext. Caps ESD Protect.
(±kV)
Package/Pins Budgetary Price
min typ See Notes
MAX3185 
5
12
3 5 230 0.38 No 0 15
SOIC(W)/20
SSOP/20
$1.27 @1k
See All RS-232 Line Driver/Receivers (152)
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

MAX3185: Typical Operating Circuit
Typical Operating Circuit

Notes and Comments

Ideal for desktop PCs and motherboards

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Information Index

Document Ref.: 19-1076 Rev 0; 1996-09-01
This page last modified: 2009-07-28




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