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  • 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.

    Key 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

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STMicroelectronics - ST485AB

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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

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Autoshutdown
Budgetary Price (US$)*/Qty
More info
min
max
ST485ABDR Available at 6 distributors

Distributor availability ofST485ABDR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4971 1 Order Now
RS COMPONENTS EUROPE 2450 1 Order Now
AVNET AMERICA 2500 0 Order Now
MOUSER WORLDWIDE 829 1 Order Now
Farnell Element14 EUROPE 2110 1 Order Now
ANGLIA Live EUROPE 2234 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

4971

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2450

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

829

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2110

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2234

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

Buy Direct
Active
EAR99 NEC Tape And Reel SO-8 -40 85 - 0.82 / 1k
MORE INFO

Unit Price (US$):

0.82

Country of Origin:

MOROCCO

ST485ABDR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.82 / 1k

Distributor availability ofST485ABDR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4971 1 Order Now
RS COMPONENTS EUROPE 2450 1 Order Now
AVNET AMERICA 2500 0 Order Now
MOUSER WORLDWIDE 829 1 Order Now
Farnell Element14 EUROPE 2110 1 Order Now
ANGLIA Live EUROPE 2234 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

4971

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2450

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

829

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2110

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2234

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

85

Autoshutdown

-

Budgetary Price (US$)* / Qty

0.82 / 1k

Country of Origin

MOROCCO

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