Maxim > Products > Interface > MAX13487E, MAX13488E

MAX13487E, MAX13488E

Half-Duplex RS-485/RS-422-Compatible Transceiver with AutoDirection Control

Eliminate an Isolated Control Channel with AutoDirection
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Active: In Production.

Description

The MAX13487E/MAX13488E +5V, half-duplex, ±15kV ESD-protected RS-485/RS-422-compatible transceivers feature one driver and one receiver. The MAX13487E/MAX13488E include a hot-swap capability to eliminate false transitions on the bus during power-up or live insertion.

The MAX13487E/MAX13488E feature Maxim's proprietary AutoDirection control. This architecture makes the devices ideal for applications, such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus. The MAX13487E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free transmission up to 500kbps. The MAX13488E driver slew rate is not limited, allowing transmit speeds up to 16Mbps.

The MAX13487E/MAX13488E feature a 1/4-unit load receiver input impedance, allowing up to 128 transceivers on the bus. These devices are intended for half-duplex communications. All driver outputs are protected to ±15kV ESD using the Human Body Model. The MAX13487E/MAX13488E are available in an 8-pin SO package. The devices operate over the extended -40°C to +85°C temperature range.

Data Sheet

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An evaluation board is available: MAX13487EEVKIT

Key Features

  • +5V Operation
  • AutoDirection Enables Driver Automatically on Transmission
  • Hot-Swappable for Telecom Applications
  • Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX13487E)
  • High-Speed Version (MAX13488E) Allows for Transmission Speeds Up to 16Mbps
  • Extended ESD Protection for RS-485 I/O Pins ±15kV Human Body Model
  • 1/4-Unit Load, Allowing Up to 128 Transceivers on the Bus
  • 8-Pin SO Package
 

Applications/Uses

  • Automated HVAC Systems
  • Industrial Controls
  • Industrial Motor Drives
  • Isolated RS-485 Interfaces
  • 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 Budgetary
Price
typ min typ See Notes
MAX13487E  1Tx + 1Rx Half 5 4.5 500 15 No Yes 10 128 $1.75 @1k
MAX13488E  16000
See All RS-422/485 Line Driver/Receivers (171)

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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



Diagram

MAX13487E, MAX13488E: Functional Diagram
Functional Diagram

More Information

New Product Press Release   2007-03-14 ]

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Information Index

Document Ref.: 19-0740 Rev 0; 2007-02-09
This page last modified: 2009-10-22