Low Power 5V 2.5Mbps 256-Fanout RS485 Transceivers

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The ZT13085E device is a 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 ZT13085E series devices spans out with half duplex, data rate guaranteed at 2.5M bit per second 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 Vcc at +5V ±10%
● Low quiescent current – 0.5mA typ., 1mA max
● Low shutdown current (where applicable) - 1μA typical, 10μA max
● Guaranteed standard data rate 2.5Mbps
● True Fail-Safe (Open, Short, Bus Idle) Receiver
● -7V to +12V common-mode input voltage range
● Half-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 MAX3085E, MAX13082E, MAX13085E, SN75HVD3085, SN-65HVD3085
● Standard fanout driving 1 unit load (32 devices) on the ZT485E Series are available options

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



Technical Documentation

Product Brief, Product Introduction and Datasheet

ZT13085E Product Brief

Release Date

File Size
316.9 KB

ZT13085E Datasheet


Release Date

File Size
1.9 MB