ST485AB

Active
Design Win

Very high speed low power RS-485/RS-422 transceiver

Download datasheet Order Direct
Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

Product overview

Description

The ST485A is a low power, high speed transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in half duplex configuration. The ST485A draws 3 mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5 V supply.

Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that place the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic high output if both inputs are open circuit.

The ST485A is designed for bi-directional data communications or multipoint bus transmission lines.

  • All features

    • Latch-up free up to 500 mA
    • Current limiting and thermal shutdown for driver overload protection
    • Operate from single 5 supply
    • 70mV typical input hysteresis
    • Low supply current: 5 mA max
    • Designed for RS 485 interface applications
    • High data rate > 30 Mbps
    • Driver maintains high impedance in 3-state or with the power off
    • ±4 kV ESD protection
    • -7 to 12 common mode input voltage range

EDA Symbols, Footprints and 3D Models

STMicroelectronics - ST485AB

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST485ABDR
Active
SO-8 Industrial Ecopack3

ST485ABDR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Swipe or click the button to explore more details Don't show this again
Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Autoshutdown
Budgetary Price (US$)*/Qty
Unit Price (US$)
Country of Origin
min
max
ST485ABDR Available at distributors

Distributor availability of ST485ABDR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel SO-8 -40 85 -

1.1618

MOROCCO

ST485ABDR Active

Package:
SO-8
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

ST485ABDR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Autoshutdown:

-

Country of Origin:

MOROCCO

Distributor Name

Distributor reported inventory date:

Swipe or click the button to explore more details Don't show this again

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors