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Home >> Products >> I/O Connectivity ICs >> RS-232/RS-485 Transceivers >> 5V RS485 Transceiver >> ZT3087E

 ZT3087E -- Low Power 5V 20Mbps 256-Fanout RS485 Transceivers with True Fail Safe (Features 8-pin, Full Duplex)

The ZT308xE series devices are 5V 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 ZT308xE series devices spans out with half or full duplex, data rate guaranteed at 250Kbps, 1Mbps, or 20Mbps and allow one-eighth of an unit load that fan out 256 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 V cc at +5V ±10%
  • Low quiescent current: 0.4mA typ., 0.9mA max
  • Low shutdown current (where applicable): 1nA typical, 10μA max
  • Guaranteed standard data rate 250Kbps, 1Mbps, or 20Mbps
  • True Fail-Safe (Open, Short, Bus Idle) Receiver
  • -7V to +12V common-mode input voltage range
  • Half-Duplex or Full-Duplex mode configuration
  • Allows up to 1/8 unit load (256 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)
  • Alternative replacement for MAX308xE series, SN75HVD3082E, and SN65HVD3082E series
Target Applications:
  • RS422/RS485 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
  • Industrial, security CATV and camera applications

 Pin Configuration and Application Diagram


 Selection Guide


Technical Documentation

 Product Brief, Product Introduction and Datasheet

ZT3087E Brief341.7 KB2015-04-30
ZT3087E Datasheet 2.2 MB2017-09-05

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