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

Product Details

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.

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

Applications/Uses

  • Industrial Control Local Area Networks
  • Large 256-Node LANs
  • Low-Power RS-485/RS-422 Networks
  • Transceivers for EMI-Sensitive Applications
Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Full
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 0.02
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.1
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/14
SOIC (N)/14
Budgetary
Price (See Notes)
$1.62 @1k
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Simplified Block Diagram

MAX1482, MAX1483: Typical Operating Circuit MAX1482, MAX1483: Typical Operating Circuit Zoom icon

Technical Docs

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Parameters

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Full
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 0.02
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.1
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/14
SOIC (N)/14
Budgetary
Price (See Notes)
$1.62 @1k

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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX1482, MAX1483: Typical Operating Circuit MAX1482, MAX1483: 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