ST485B

Active

low power RS-485/RS-422 transceiver, [-40oC, 85oC] temperature range

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  • The ST485 is al low power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

    This transceiver draw 300 μA (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 placed the driver outputs into a high-impedance state.
    The ST485 is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applications).
    The ST485 is available in three temperature range: commercial (0 °C to 70 °C), industrial (- 40 °C to 85 °C) and automotive (- 55 °C to 125 °C).

    Key Features

    • Operate from a single 5 V supply
    • 30 ns propagation delay, 5 ns skew
    • Allows up to 64 transceivers on the bus
    • Low quiescent current: 300 μA
    • - 7 V to 12 V common mode input voltage range
    • Designed for RS-485 interface application
    • 70 mV typical input hysteresis
    • Current limiting and thermal shutdown for driver overload protection
    • Driver maintains high impedance in 3-state or with the power OFF

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Technical Documentation

    • Description Version Size Action
      DS2037
      Low power RS-485/RS-422 transceiver
      16.2
      719.87 KB
      PDF
      DS2037

      Low power RS-485/RS-422 transceiver

    • Description Version Size Action
      AN1348
      ST485: an RS-485 based interface with lower data bit errors
      3.2
      112.81 KB
      PDF
      AN1348

      ST485: an RS-485 based interface with lower data bit errors

Publications and Collaterals

    • Description Version Size Action
      Products and solutions for Smart industry 3.0
      2.99 MB
      PDF

      Products and solutions for Smart industry

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST485BDR
Active
SO-8 Industrial Ecopack3

ST485BDR

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
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Autoshutdown
Budgetary Price (US$)*/Qty
More info
min
max
ST485BDR Available at 9 distributors

Distributor availability ofST485BDR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9507 1 Order Now
COMPEL EUROPE 32173 1 Order Now
RS COMPONENTS EUROPE 8128 2 Order Now
ARROW EUROPE 340844 0 Order Now
Newark Element14 AMERICA 5000 0 Order Now
ARROW AMERICA 25000 2500 Order Now
MOUSER WORLDWIDE 22615 1 Order Now
Farnell Element14 EUROPE 47344 1 Order Now
ANGLIA Live EUROPE 76670 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

9507

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

32173

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

8128

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

340844

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

25000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

22615

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

47344

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

76670

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Buy now
Active
EAR99 NEC Tape And Reel SO-8 -40 85 - 0.62 / 1k
MORE INFO

Unit Price (US$):

0.62

Country of Origin:

CHINA

ST485BDR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.62 / 1k

Distributor availability ofST485BDR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9507 1 Order Now
COMPEL EUROPE 32173 1 Order Now
RS COMPONENTS EUROPE 8128 2 Order Now
ARROW EUROPE 340844 0 Order Now
Newark Element14 AMERICA 5000 0 Order Now
ARROW AMERICA 25000 2500 Order Now
MOUSER WORLDWIDE 22615 1 Order Now
Farnell Element14 EUROPE 47344 1 Order Now
ANGLIA Live EUROPE 76670 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

9507

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

32173

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

8128

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

340844

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

25000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

22615

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

47344

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

76670

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

85

Autoshutdown

-

Budgetary Price (US$)* / Qty

0.62 / 1k

Country of Origin

CHINA

(*) 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