{"title":"Adafruit RS232 Pal - Two Channel UART to RS-232 Level Shifters","handle":"adafruit-rs232-pal-two-channel-uart-to-rs-232-level-shifters-ada5987","url":"/products/adafruit-rs232-pal-two-channel-uart-to-rs-232-level-shifters-ada5987","description":"The Adafruit RS232 Pal provides two duplex channels of UART-to-RS-232 level shifting in a compact breakout board. Built around the trusted TI MAX3232E, it handles the positive and negative voltage generation internally and supports communication at up to 250 Kbps on 3.3 V power and logic.\n\nWith two full-duplex channels, you get both RX/TX plus two additional flow control signals like RTS and CTS. The board breaks out the RS-232 voltage rails as well, in case you need to reference them directly.\n\nKey Features\n\n\nMAX3232E Level Shifter – 2 duplex channels for TX, RX, and flow control (e.g. RTS/CTS)\n\n3.3 V Power & Logic – Runs on 3.3 V, compatible with modern microcontrollers\n\nUp to 250 Kbps – Suitable for most RS-232 communication needs\n\nInternal Voltage Generation – Generates the required ±6 to ±10 V RS-232 signal levels from 3.3 V\n\nVoltage Rail Breakout – Doubled and negative voltage rails accessible for external use\n\nFully Assembled – UART side for low-voltage logic, RS-232 side for high-voltage signals; header included\n\n\nAlso Consider\n\n\nRS-232 Full Pinout Level-Shifter Breakout (DE9-F) – 8-channel version with full flow control and DE-9 connector\n\nRS-232 Full Breakout with DE9-M – 8-channel version with male DE-9 connector\n\n\nIdeal For\n\nSimple TX/RX plus flow control RS-232 connections\nInterfacing with industrial, telco, or retro equipment\nModem, barcode scanner, and serial terminal communication\nProjects that only need 2 channels and don't require a full DE-9 connector\n\n\nPackage Contents\n\n1× Adafruit RS232 Pal breakout (fully assembled)\n1× Header strip (soldering required for breadboard use)\n\n\n\nTip: If you need all 8 RS-232 signals (including DTR, DSR, DCD, and RI), use the full-pinout version with a DE-9 connector instead.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":979,"title":"Default Title","sku":"AF-5987","mpn":"ADA5987","price":7.64,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":10,"option1":"Default Title"}]}