Maxim > Products > Interface > MAX1482, MAX1483

MAX1482, MAX1483

20µA, 1/8-Unit-Load, Slew-Rate-Limited, RS-485 Transceivers

 Overview   Design Resources   Ordering Info   Related Products   All   

Status Explanations for product status codes

Active: In Production.


The MAX1482 and MAX1483 are low-power transceivers for RS-485 and RS-422 communication. Both feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables. Data rates are guaranteed up to 250kbps.

The MAX1482/MAX1483 draw only 20µA of supply current. Additionally, they have a low-current shutdown mode that consumes only 0.1µA. Both parts operate from a single +5V supply.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.
The MAX1482 is full duplex and the MAX1483 is half duplex. Both parts have a 1/8-unit-load input impedance that guarantees up to 256 transceivers on the bus.

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 604kB)
Send this datasheet to any email addressEmail

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

Login | Register

Key Features

  • Low 20µA Operating Current
  • Slew-Rate Limited for Reduced EMI and Reduced Reflections
  • 0.1µA Low-Current Shutdown Mode
  • Designed for RS-485 and RS-422 Applications
  • Operate from a Single +5V Supply
  • -7V to +12V Common-Mode Input Voltage Range
  • Allows up to 256 Transceivers on the Bus—Guaranteed (1/8-unit load)
  • Current Limiting and Thermal Shutdown for Driver Overload Protection


  • Industrial Control Local Area Networks
  • Large 256-Node LANs
  • Low-Power RS-485/RS-422 Networks
  • Transceivers for EMI-Sensitive Applications

Key Specifications:

RS-422/485 Line Driver/Receivers
Part Number Tx/Rx Duplex VSUPPLY
Data Rate
Tx EN Rx EN ICC (Shutdn.)
Rx/Tx on Bus Budgetary
typ min typ See Notes
MAX1482  1Tx + 1Rx Full 5 0.02 250 Yes Yes 0.1 256 $1.54 @1k
MAX1483  Half $1.49 @1k
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.


MAX1482, MAX1483: Typical Operating Circuit
Typical Operating Circuit

Notes and Comments

1/8-unit load input impedance

Didn't Find What You Need?

Information Index

Document Ref.: 19-0367 Rev 1; 2006-06-28
This page last modified: 2007-05-29