
BOB-11189 · SparkFunActive


Easily connect your 3.3V or 5V microcontrollers to RS232 serial devices with this MAX3232 transceiver breakout board. (SparkFun BOB-11189)
| Part number | BOB-11189 |
|---|---|
| Manufacturer | SparkFun |
| Category | Communication & Wireless › CAN, RS-485 & RS-232 |
| Pins | 10 |
| Voltage (max) | 5 V |
SparkFun Transceiver Breakout - MAX3232 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | R2OUT | bidirectional | |
| 2 | R1OUT | bidirectional | |
| 3 | T2IN | bidirectional | |
| 4 | T1IN | bidirectional | |
| 5 | GND | ground | |
| 6 | VCC | power | |
| 7 | R2IN | bidirectional | |
| 8 | R1IN | bidirectional | |
| 9 | T2OUT | bidirectional | |
| 10 | T1OUT | bidirectional |
Schematic symbol and footprint
Footprint: SparkFun Transceiver Breakout - MAX3232
(header pads) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Datasheet
Where to buy
Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.
Related parts

Adafruit CAN Bus FeatherWing - MCP2515ADA5709

Adafruit CAN Pal - CAN Bus TransceiverADA5708

Adafruit RS-232 Full Pinout Level-Shifter BreakoutADA5988

Isolated RS485 UnitU094

Adafruit CAN Bus BFF Add-On for QT PyADA5877

Adafruit PiCowbell CAN Bus for Pico - MCP2515 CAN ControllerADA5728

Adafruit RS232 Pal - Two Channel UART to RS-232 Level ShiftersADA5987

CANBus Unit(CA-IS3050G)U085