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Home >> Products >> I/O Connectivity ICs >> RS-232/RS-485 Transceivers >> 3V RS485 Transceiver >> ZT3485E

 ZT3485E -- Low Power 3V 16Mbps RS485 Transceivers (Features 8-pin, Half Duplex)

The ZT3485E series devices are 3V differential data line transceivers for RS485/RS422 communication that consist of one driver and one receiver with high level of ESD protection. They are designed for balanced transmission lines interface that meet ANSI standard TIA/EIA-485-A and ISO 8482:1987(E) specifications.

The ZT3485E series devices span out with half or full duplex, data rate guaranteed at 250Kbps or 16Mbps, and allow one unit load that fan out 32 devices sharing a common bus. The I/Os are enhanced-electrostatic discharge (ESD) protected, exceeding ±15kV Human Body Model (HBM).


  • Meets or exceeds the requirements of ANSI Standard TIA/EIA-485-A and ISO 8482:1987(E) specifications for Vcc at +3.3V ±10%
  • Low quiescent current – 0.5mA typ., 1.5mA max
  • Low shutdown current (where applicable) - 0.05μA typical, 10μA max
  • Guaranteed standard data rate 250Kbps or 16Mbps
  • True Fail-Safe (Open and Short) Receiver
  • -7V to +12V common-mode input voltage range
  • Half-Duplex or Full-Duplex configuration
  • Allows up to 1 unit load (32 devices) on the same common bus
  • Controlled driver output slew rate and receiver input filtering
  • Active-high driver enable and active-low receiver enable
  • ESD Protection on bus terminals
    • ±15kV Human Body Model (HBM)
  • Drop-in Replacements for MAX3483E, MAX3485E, MAX3488E, MAX3490E, MAX3491E
  • High fanout driving 1/8 unit load (256 devices) available on ZT3070E Series
Target Applications:
  • RS-422/RS-485 communications
  • Utility meters
  • Industrial process control
  • Building automation
  • Level translators
  • Transceivers for EMI-sensitive applications
  • Routers and HUBs
  • Industrial-controlled Local Area Networks
  • Industrial PCs, embedded PCs and peripherals

 Pin Configuration and Application Diagram


 Selection Guide


Technical Documentation

 Product Brief, Product Introduction and Datasheet

ZT3485E Brief348.9 KB2015-04-30
ZT3485E Datasheet 1.7 MB2015-04-08

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