Adafruit RS232 Full Breakout with DE9-M
RS-232 level-shifter breakout with a soldered DE-9 male connector and MAX3243 transceiver, exposing all data and hardware flow-control lines plus Valid and Off signals. Compatible with 3 V to 5 V microcontrollers.
Pinout
- VinType · Power
- GNDType · Ground
- TXType · UART
- RXType · UART
- RIType · Control
- CTSType · UART
- RTSType · UART
- DSRType · Control
- DTRType · Control
- DCDType · Control
- OFFType · Control
- VLDType · Unknown
- DE-9 connectorType · Unknown
| Pin | Type |
|---|---|
| Vin | Power |
| GND | Ground |
| TX | UART |
| RX | UART |
| RI | Control |
| CTS | UART |
| RTS | UART |
| DSR | Control |
| DTR | Control |
| DCD | Control |
| OFF | Control |
| VLD | Unknown |
| DE-9 connector | Unknown |
Pin details
13 connections- VinPower
- GNDGround
- TXUART
- RXUART
- RIControl
- CTSUART
- RTSUART
- DSRControl
- DTRControl
- DCDControl
- OFFControl
- VLDUnknown
- DE-9 connectorUnknown
Start wiring
Ethernet · UART · SPI · Shield
Verify supply voltage and logic levels before powering up.
Module pins: Vin, GND, TX, RX. Schematik maps them to your board in the app.
Wired comms
118 other optionsW5100/W5500 Ethernet shields, LAN8720 RMII PHY boards, MAX3243 RS-232 level shifters, isolated USB-to-RS485 converters, CAN FD bridges, and passive or active PoE injectors and splitters.
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