2 layers200 × 155 mm
DE10nano interface
ShadeTechnik/socfpga-developement-OSHW
hardware and software development for socfpga, open source
139 parts1
DS89C21TM
Texas InstrumentsExtended
-40℃~+85℃ 1 1 20Mbps 4.5V~5.5V Fail-safe Transceiver SOIC-8 RS-485 / RS-422 ICs ROHS
- Part id
- ti/DS89C21TM
- Category
- RS 485, RS 422 ICs
- Package
- SOIC-8
- Pins
- 8
- In stock
- 10 at JLCPCB (C2872922)
- Used on
- 1 open-source board
Overview
The DS89C21TM is a RS 485, RS 422 IC made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+85℃ 1 1 20Mbps 4.5V~5.5V Fail-safe Transceiver SOIC-8 RS-485 / RS-422 ICs ROHS.
PCBKit's library has its KiCad symbol (Interface_LineDriver:DS89C21, 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. 10 are in stock at JLCPCB (part C2872922). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | VCC | Power in |
| 2 | RO | Output |
| 3 | DI | Input |
| 4 | GND | Power in |
| 5 | DO | Output |
| 6 | DO | Output |
| 7 | RI | Input |
| 8 | RI | Input |
Open-source boards using it
1Parts like it
8
SP3485EN-L/TR
SOIC-8-40℃~+85℃ 1 1 10Mbps 2mA 3.3V 32 Half-Duplex Transceiver SOIC-8 RS-485 / RS-422 ICs ROHSMaxLinearRS-485 / RS-422 ICsSP485EEN-L/TR
SOIC-8-40℃~+85℃ 1 1 10Mbps 4.75V~5.25V 900uA Half-Duplex Transceiver ±15kV SOIC-8 RS-485 / RS-422 ICs ROHSMaxLinearRS-485 / RS-422 ICsSN75176BD
SOIC-80℃~+70℃ 1 1 4.75V~5.25V Transceiver SOIC-8 RS-485 / RS-422 ICs ROHSTexas InstrumentsRS-485 / RS-422 ICsMAX485ESA+T
SOIC-8-40℃~+85℃ 1 1 2.5Mbps 4.75V~5.25V Transceiver SOIC-8 RS-485 / RS-422 ICs ROHSMaxim Integrated (Analog Devices)RS-485 / RS-422 ICsMAX13487EESA+T
SOIC-8-40℃~+85℃ 1 1 128 4.5mA 4.75V~5.25V 500Kbps Half-Duplex Transceiver ±15kV SOIC-8 RS-485 / RS-422 ICs ROHSMaxim Integrated (Analog Devices)RS-485 / RS-422 ICsTHVD2450D
SOIC-8-40℃~+125℃ 1 1 256 3V~5.5V 50Mbps Half-Duplex Transceiver ±16kV SOIC-8 RS-485 / RS-422 ICs ROHSTexas InstrumentsRS-485 / RS-422 ICsTP8485E-SR
SOIC-8-40℃~+125℃ 1 1 1.4mA 250Kbps 256 3V~5.5V Transceiver ±18kV SOIC-8 RS-485 / RS-422 ICs ROHS3PEAKRS-485 / RS-422 ICsSP3078EEN-L/TR
SOIC-8-40℃~+85℃ 1 1 1.5mA 16Mbps 256 3.3V Half-Duplex Transceiver ±15kV SOIC-8 RS-485 / RS-422 ICs ROHSMaxLinearRS-485 / RS-422 ICs
Questions
Is there a KiCad symbol and footprint for the DS89C21TM?
Yes. The symbol is Interface_LineDriver:DS89C21 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 DS89C21TM?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the DS89C21TM datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the DS89C21TM?
JLCPCB lists it as part C2872922, with 10 in stock; the sellers' links on this page open their listings.
What can replace the DS89C21TM?
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 DS89C21TM?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.