MAX13451E
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MAX13451E

RS-485 Transceivers with Integrated 100Ω/120Ω Termination Resistors

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Software/Pin-Selectable Termination Eliminates the Need for External Resistors and DIP Switches

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.49
Features
  • Easy Configuration of RS-422 and RS-485 Networks Up to 20Mbps (max) Data Rate
    • Software/Pin-Selectable 100Ω/120Ω Termination
    • Integrated, Switchable Resistors Eliminate the Need for External Resistors or DIP Switches
    • Driver Drives 100Ω Double Termination and Supports Cat-5/Cat-6 and 24-AWG Cables
    • Pin-Selectable Slew-Rate Limiting Reduces EMI for Data Rates Up to 500kbps
    • 1/8 Unit Load Allows Up to 256 Transceivers On the Bus
  • Designed to Perform in Harsh Environments
    • Extended ESD Protection
      • ±30kV Human Body Model
      • ±15kV Air Gap Discharge per IEC 61000-4-2
      • ±7kV Contact Discharge per IEC 61000-4-2
    • Inverting of A, B Line Polarity (MAX13451E) Allows Phase Reversal if Misconnected
    • Thermal and Overcurrent Protection
    • Driver Fault Indication (MAX13451E)
    • Fail-Safe Receivers
    • -40°C to +125°C Temperature Range
    • +4.5V to +5.5V Supply Voltage Range
  • Integrated Low-Voltage Logic Interface (Down to 1.8V) Interfaces with Small-Geometry ASICs and FPGA
Additional Details
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The MAX13450E/MAX13451E are half-duplex and full-duplex RS-485/RS-422 transceivers. These devices feature internal 100Ω and 120Ω termination resistors. The resistor values are pin selectable. A logic supply input allows interfacing to logic levels down to +1.8V.

The MAX13450E/MAX13451E feature strong drivers specified to drive low-impedance lines found when a fully loaded bus, based on today's 100Ω characteristic impedance cable, is doubly terminated. Both devices allow slew-rate limiting of the driver output to reduce EMI and reflections for data rates up to 500kbps.

The MAX13451E has a FAULT alarm indication output to signal to the system that an error condition exists in the driver. The MAX13451E also features a logic inversion function. The logic inversion allows phase reversal of the A-B signals in case these are inadvertently connected wrongly.

The MAX13450E/MAX13451E have 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus. All driver outputs are protected to ±30kV ESD using the Human Body Model (HBM).

The MAX13450E/MAX13451E are available in a 14-pin TSSOP package and operate over the automotive -40°C to +125°C temperature range.

Applications

  • Industrial Control Systems
  • Medical Networks
  • Motor Control
  • Portable Industrial Equipment
  • Security Networks
Part Models 2
1ku List Price Starting From $2.49

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May 11, 2022

- 2236N

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