Low Power 3V 250Kbps RS485 Transceivers (Features 8-pin, Half Duplex)

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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



Technical Documentation

Product Brief, Product Introduction and Datasheet

ZT3483E Product Brief

Release Date

File Size
348.9 KB

ZT3483E Datasheet


Release Date

File Size
1.7 MB