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Half-Duplex RS-485/RS-422 Transceivers in µDFN

Industry's Smallest RS-485 Transceiver with Enhanced ESD Protection

Product Details

Key Features

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 5
Data Rate (kbps) (min) 500
ICC (mA) (typ) 4.5
ESD Protect. (±kV) 15
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 10
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
UDFN/8
Budgetary
Price (See Notes)
2.02
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Simplified Block Diagram

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Parameters

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 5
Data Rate (kbps) (min) 500
ICC (mA) (typ) 4.5
ESD Protect. (±kV) 15
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 10
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
UDFN/8
Budgetary
Price (See Notes)
2.02

Key Features

  • +5V Operation
  • True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
  • Hot-Swappable for Telecom Applications
  • Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX13485E)
  • High-Speed Version (MAX13486E) Allows for Transmission Speeds Up to 16Mbps
  • Extended ESD Protection for RS-485/RS-422 I/O Pins ±15kV Using Human Body Model
  • 1/4 Unit Load, Allowing Up to 128 Transceivers on the Bus
  • Available in Space-Saving 8-Pin μDFN or Industry Standard 8-Pin SO Packages

Applications/Uses

  • Automated HVAC Systems
  • Industrial Controls
  • Industrial Motor Drives
  • Utility Meters

Description

The MAX13485E/MAX13486E +5V, half-duplex, ±15kV ESD-protected RS-485 transceivers feature one driver and one receiver. These devices include 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 MAX13485E/MAX13486E include a hot-swap capability to eliminate false transitions on the bus during power-up or live-insertion.

The MAX13485E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free transmission up to 500kbps. The MAX13486E driver slew rate is not limited, allowing transmit speeds up to 16Mbps.

The MAX13485E/MAX13486E 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 MAX13485E/MAX13486E are available in 8-pin SO and space-saving 8-pin µDFN packages. The devices operate over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX13485E, MAX13486E: Pin Configurations MAX13485E, MAX13486E: Pin Configurations 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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.