STR485

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3.3V RS485 compatible with 1.8V I/Os and selectable speed 20Mbps or 250kbps

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  • The STR485 is a low power differential line transceiver for data transmission standard RS485 applications in half-duplex mode. Data and enable signals are compatible with 1.8 V or 3.3 V supplies.

    Two speeds are selectable through SLR pin: fast data rate up to 20 Mbps or slow data rate for extended cable running to 250 kbps.
    Excessive power dissipation caused by bus contention or faults is prevented by thermal shutdown circuit that forces the driver outputs into a high impedance state. The receiver has a fail-safe feature, which guarantees a high output state when the inputs are left open, shorted or idle.

    Key Features

    • Half-duplex RS485 transceiver
    • 1.65 V to 3.6 V supply for data and enable signals
    • 3 V to 3.6 V supply for bus supply
    • High speed: up to 20 Mbps data rate
    • Low speed selected by SLR pin : 250 kbps
    • Up to 256 transceivers on the bus
    • Fail safe receiver (bus open, idle and shorted)
    • Thermal shutdown protection
    • Low quiescent current in shutdown mode
    • Extended temperature range : -40 °C to +105 °C
    • Available in industry standard DFN10
    • Bus-pin protection more than:
      • ±4 kV HBM protection
      • ±8 kV IEC61000-4-2 contact discharge
      • ±16 kV IEC61000-4-2 air discharge
      • Compliant IEC61000-4-4 fast transient burst Class B

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Technical Documentation

    • Description Version Size Action
      DS12713
      3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250 kbps
      5.0
      1.26 MB
      PDF
      DS12713

      3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250 kbps

    • Description Version Size Action
      AN5245
      3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250 kbps
      1.1
      271.16 KB
      PDF
      AN1348
      ST485: an RS-485 based interface with lower data bit errors
      3.2
      112.81 KB
      PDF
      AN5245

      3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250 kbps

      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**
STR485LVQT
Active
VDFPN 10 3x3x1.0 Industrial Ecopack3

STR485LVQT

Package:

VDFPN 10 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VDFPN 10 3x3x1.0

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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Package
Packing Type
Temperature (°C) Autoshutdown
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
min
max
STR485LVQT Available at 5 distributors

Distributor availability ofSTR485LVQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2988 1 Order Now
AVNET AMERICA 3000 0 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 1267 1 Order Now
Farnell Element14 EUROPE 2922 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

2988

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1267

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2922

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Get sample VDFPN 10 3x3x1.0 Tape And Reel -40 105 -
Active
EAR99 MALAYSIA 1.456 / 1k

STR485LVQT

Package

VDFPN 10 3x3x1.0

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.456 / 1k

Distributor availability ofSTR485LVQT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2988 1 Order Now
AVNET AMERICA 3000 0 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 1267 1 Order Now
Farnell Element14 EUROPE 2922 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

2988

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1267

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2922

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Operating Temperature (°C)

(min)

-40

(max)

105

Autoshutdown

-

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.456 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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