Product overview
Description
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.
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All 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
All resources
| Resource title | Version | Latest update |
|---|
Product Specifications (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 5.0 | 03 Jul 2020 | 03 Jul 2020 |
Application Notes (2)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.1 | 16 Apr 2019 | 16 Apr 2019 | ||
| 3.2 | 13 Sep 2018 | 13 Sep 2018 |
Brochures (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 04.21 | 08 Apr 2021 | 08 Apr 2021 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - STR485
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
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STR485LVQT | Active | VDFPN 10 3x3x1.0 | Industrial | 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 | Country of Origin | Budgetary Price (US$)*/Qty | Unit Price (US$) | Country of Origin | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||||||
| STR485LVQT | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | VDFPN 10 3x3x1.0 | -40 | 105 | - | MALAYSIA | | 1.8686 | MALAYSIA | ||
(*) 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