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Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

Product Details

The MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

Key Features

  • Low Power Consumption Minimizes Thermal Dissipation, Reducing System Cost
    • 120µA to 500µA Quiescent Current
    • Shutdown Current of 0.1µA
    • Single 5V Supply Voltage
  • Slew-Rate-Limited Drivers (MAX483/MAX487/MAX488 and MAX489)
    • Up to 250kbps Data Rate
    • Unlimited Drivers: Up to 2.5Mbps Data Rate
  • Integrated Protection Enhances System Robustness
    • Short Circuit Current Limited Driver
    • Integrated Thermal Shutdown
    • Receiver Fail-Safe for Input Open Circuit
    • Guarantees Logic High
  • 1/4 Unit Loading (MAX487/ MAX1487 only) Allows Up to 128 Devices on a Single Bus
    • 48kΩ Receiver Input Resistance

Applications/Uses

  • Industrial-Control Local Area Networks
  • Level Translators
  • Low-Power RS-422 Transceivers
  • Low-Power RS-485 Transceivers
  • Transceivers for EMI-Sensitive Applications
Parametric specs for RS-485/RS-422 Transceivers (RS485, RS422 TxRx)
# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 5
Data Rate (kbps) (min) 2500
ICC (mA) (typ) 0.5
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.1
Oper. Temp. (°C) -55 to +125
-40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
$1.62 @1k
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Simplified Block Diagram

MAX1487, MAX481, MAX483, MAX485, MAX487, MAX488, MAX489, MAX490, MAX491: Pin Configuration and Typical Operating Circuit MAX1487, MAX481, MAX483, MAX485, MAX487, MAX488, MAX489, MAX490, MAX491: Pin Configuration and Typical Operating Circuit Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Additional Resources
RS-485 Resources
/en/design/design-tools/ee-sim.html?

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for RS-485/RS-422 Transceivers (RS485, RS422 TxRx)
# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 5
Data Rate (kbps) (min) 2500
ICC (mA) (typ) 0.5
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.1
Oper. Temp. (°C) -55 to +125
-40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
$1.62 @1k

Key Features

  • Low Power Consumption Minimizes Thermal Dissipation, Reducing System Cost
    • 120µA to 500µA Quiescent Current
    • Shutdown Current of 0.1µA
    • Single 5V Supply Voltage
  • Slew-Rate-Limited Drivers (MAX483/MAX487/MAX488 and MAX489)
    • Up to 250kbps Data Rate
    • Unlimited Drivers: Up to 2.5Mbps Data Rate
  • Integrated Protection Enhances System Robustness
    • Short Circuit Current Limited Driver
    • Integrated Thermal Shutdown
    • Receiver Fail-Safe for Input Open Circuit
    • Guarantees Logic High
  • 1/4 Unit Loading (MAX487/ MAX1487 only) Allows Up to 128 Devices on a Single Bus
    • 48kΩ Receiver Input Resistance

Applications/Uses

  • Industrial-Control Local Area Networks
  • Level Translators
  • Low-Power RS-422 Transceivers
  • Low-Power RS-485 Transceivers
  • Transceivers for EMI-Sensitive Applications

Description

The MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

Simplified Block Diagram

MAX1487, MAX481, MAX483, MAX485, MAX487, MAX488, MAX489, MAX490, MAX491: Pin Configuration and Typical Operating Circuit MAX1487, MAX481, MAX483, MAX485, MAX487, MAX488, MAX489, MAX490, MAX491: Pin Configuration and Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.