MAX14780E

+5.0V, ±30kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceiver

RS-485 Transceiver with High ±30kV ESD Protection for Robust System Performance

 Overview   Technical Documents   Ordering Info   Related Products   User Comments (0)   All   


Status Explanations for product status codes

Active: In Production.

Description

The MAX14780E +5.0V, ±30kV ESD-protected, RS-485/RS-422 transceiver features one driver and one receiver. The device includes fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic-high if all transmitters on a terminated bus are disabled (high impedance). The MAX14780E includes a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.

The MAX14780E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 500kbps.

The MAX14780E is ideal for half-duplex communications and it draws 1.2mA of supply current when unloaded or when fully loaded with the drivers disabled. The MAX14780E has a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.

The MAX14780E is available in an 8-pin SO and PDIP packages.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 2 (PDF, 2.4MB)
Send this datasheet to any email addressE-Mail

My Maxim: Not Logged In
By logging in to My Maxim you can subscribe to alerts for this data sheet.

Login | Register

Key Features

  • +5.0V Operation
  • Extended ESD Protection for RS-485/RS-422 I/O Pins ±30kV Human Body Model
  • True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
  • Hot-Swap Input Structures on DE and Active-Low RE
  • Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission
  • Low-Current Shutdown Mode
  • Allow Up to 256 Transceivers on the Bus
  • Available in Industry-Standard 8-Pin SO and PDIP Packages
 

Applications/Uses

  • Industrial Control
  • Instrumentation
  • Lighting Systems
  • PROFIBUS
  • Security Systems
  • Telecom
  • Utility Meters
   

Key Specifications:

RS-422/485 Line Driver/Receivers
Part Number Tx/Rx Duplex VSUPPLY
(V)
ICC
(mA)
Data Rate
(kbps)
ESD Protect.
(±kV)
Tx EN Rx EN ICC (Shutdn.)
(µA)
Rx/Tx on Bus Package/Pins Budgetary Price
typ min typ See Notes
MAX14780E  1Tx + 1Rx Half 5 1.2 500 30 Yes Yes 2.8 256
PDIP(N)/8
SOIC(N)/8
$1.55 @1k
See All RS-422/485 Line Driver/Receivers (165)
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

MAX14780E: Typical Operating Circuit
Typical Operating Circuit

Didn't Find What You Need?

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.: 19-5652 Rev 2; 2011-11-09
This page last modified: 2011-11-09




Contact Us     |     Privacy Policy     |     Legal Notices     |     Distributor Portal
Copyright © 2012 by Maxim Integrated Products