4 layers80 × 72 mm
Overview
The ST485ECDR is a RS 485 , RS 422 IC made by STMicroelectronics in a SO-8 package with 8 pins. 0℃~+70℃ 1 1 300uA 4.75V~5.25V 5Mbps Transceiver ±15kV SO-8 RS-485 / RS-422 ICs ROHS.
PCBKit's library has its KiCad symbol (Interface_UART:ST485E, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C283405). 5 open-source boards in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
11- Communication Mode
- Half-Duplex
- Data Rate
- 5Mbps
- ESD Protect
- ±15kV
- Features
- Enable shutdown, Overcurrent Protection, Thermal shutdown protection, Tx/Rx enable
- Number of Drivers
- 1
- Number of Nodes
- 256
- Number of Receivers
- 1
- Operating Temperature
- 0℃~+70℃
- Quiescent Supply Current
- 300uA
- Type
- Transceiver
- Voltage - Supply
- 4.75V~5.25V
Order codes
1- ST485ECDRLCSC C283405
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | RO | Output |
| 2 | RE | Input |
| 3 | DE | Input |
| 4 | DI | Input |
| 5 | GND | Power in |
| 6 | A | Input/output |
| 7 | B | Input/output |
| 8 | VCC | Power in |
Open-source boards using it
All 5- 2 layers80 × 72 mm
- 2 layers80 × 72 mm
- 2 layers80 × 72 mm
- 4 layers100 × 100 mm
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<iframe src="https://pcbkit.io/embed/parts/st/ST485ECDR" title="ST485ECDR in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/ST485ECDR.jpg" alt="ST485ECDR" width="1200" height="900">[](https://pcbkit.io/parts/st/ST485ECDR)Questions
Is there a KiCad symbol and footprint for the ST485ECDR?
Yes. The symbol is Interface_UART:ST485E and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the ST485ECDR?
SO-8, with 8 pins. Its footprint is drawn on this page.
Where is the ST485ECDR datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the ST485ECDR?
JLCPCB lists it as part C283405, with 0 in stock; the sellers' links on this page open their listings.
What can replace the ST485ECDR?
Parts like it in the library: the SP3485EN-L/TR by MaxLinear, the SP485EEN-L/TR by MaxLinear, the SN75176BD by Texas Instruments and the MAX485ESA+T by Maxim Integrated (Analog Devices). Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the ST485ECDR?
5 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
SP3485EN-L/TR
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