SC16IS750

{
  "schema_version": 1,
  "type": "component",
  "slug": "sc16is750",
  "title": "SC16IS750",
  "brief": "NXP I2C/SPI-to-UART bridge, TSSOP-24. Single UART with 64-byte FIFO, 8 GPIO, up to 5 Mbps. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "uart-bridge",
    "i2c",
    "spi",
    "fifo",
    "tssop-24",
    "nxp"
  ],
  "component": {
    "mpn": "SC16IS750",
    "manufacturer": "NXP",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Interface",
    "subcategory": "UART bridge",
    "datasheet": "https://www.nxp.com/docs/en/data-sheet/SC16IS740_750_760.pdf",
    "parts": {
      "symbol": "sc16is750.kicad_sym",
      "footprint": "sc16is750.kicad_mod",
      "model_3d": "sc16is750-etched.glb",
      "model_3d_plain": "sc16is750.glb",
      "model_3d_step": "sc16is750-etched.step",
      "model_3d_step_plain": "sc16is750.step",
      "lbr": "sc16is750.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "CTS",
        "type": "input",
        "description": "UART clear-to-send input (active LOW). A logic 0 indicates the modem/DTE is ready to accept transmit data. Status is readable via MSR[4]; only affects transmit when auto-CTS is enabled in EFR[7]."
      },
      {
        "number": "2",
        "name": "TX",
        "type": "output",
        "description": "UART transmitter serial output. Disabled and internally looped back to RX during local Loopback mode."
      },
      {
        "number": "3",
        "name": "RX",
        "type": "input",
        "description": "UART receiver serial input. Disabled in local Loopback mode where TX is internally routed to RX."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Device hardware reset, active LOW. See Section 7.4.1 for reset behavior."
      },
      {
        "number": "5",
        "name": "XTAL1",
        "type": "input",
        "description": "Crystal input or external clock input. A crystal can be tied between XTAL1 and XTAL2 to form the internal oscillator, or an external clock can drive this pin directly."
      },
      {
        "number": "6",
        "name": "XTAL2",
        "type": "output",
        "description": "Crystal oscillator output; used together with XTAL1 when a crystal is fitted."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, 2.5 V or 3.3 V nominal."
      },
      {
        "number": "8",
        "name": "I2C/SPI",
        "type": "input",
        "description": "Interface select. Tie HIGH for I2C-bus target mode, LOW for SPI target mode. Determines the function of pins 9-13."
      },
      {
        "number": "9",
        "name": "CS/A0",
        "type": "input",
        "description": "In SPI mode: SPI chip-select input (Schmitt-trigger, active LOW). In I2C mode: device-address select bit A0 (combines with A1 to program the 7-bit target address; see Table 32)."
      },
      {
        "number": "10",
        "name": "SI/A1",
        "type": "input",
        "description": "In SPI mode: SPI serial data input (MOSI). In I2C mode: device-address select bit A1 (combines with A0 to program the target address)."
      },
      {
        "number": "11",
        "name": "SO",
        "type": "tri_state",
        "description": "SPI serial data output (MISO), 3-stateable. In I2C mode this pin is undefined and must be left unconnected."
      },
      {
        "number": "12",
        "name": "SCL/SCLK",
        "type": "input",
        "description": "Serial clock input. Acts as I2C-bus SCL when I2C is selected, or SPI SCLK when SPI is selected (SPI Mode 0, up to 4 Mbit/s on SC16IS750)."
      },
      {
        "number": "13",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C-bus data line, open-drain, when I2C interface is selected. If SPI is selected this pin is undefined and must be tied to VSS."
      },
      {
        "number": "14",
        "name": "IRQ",
        "type": "output",
        "description": "Interrupt output, open-drain, active LOW. Requires an external pull-up to VDD (~1 kΩ at 3.3 V, ~1.5 kΩ at 2.5 V). Asserts on enabled sources in the IER (line status, RX data available, TX empty, modem status, GPIO change)."
      },
      {
        "number": "15",
        "name": "GPIO0",
        "type": "bidirectional",
        "description": "Programmable I/O pin with active pull-up (see Table 36). Direction, level, and interrupt behavior are set via the IODir/IOState/IOIntEna registers."
      },
      {
        "number": "16",
        "name": "GPIO1",
        "type": "bidirectional",
        "description": "Programmable I/O pin with active pull-up (see Table 36)."
      },
      {
        "number": "17",
        "name": "GPIO2",
        "type": "bidirectional",
        "description": "Programmable I/O pin with active pull-up (see Table 36)."
      },
      {
        "number": "18",
        "name": "GPIO3",
        "type": "bidirectional",
        "description": "Programmable I/O pin with active pull-up (see Table 36)."
      },
      {
        "number": "19",
        "name": "VSS",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "20",
        "name": "GPIO4/DSR",
        "type": "bidirectional",
        "description": "Programmable I/O pin, or modem DSR (Data Set Ready) input. Function is selected by IOControl register bit 1; active pull-up on input."
      },
      {
        "number": "21",
        "name": "GPIO5/DTR",
        "type": "bidirectional",
        "description": "Programmable I/O pin, or modem DTR (Data Terminal Ready) output. Selected via IOControl bit 1."
      },
      {
        "number": "22",
        "name": "GPIO6/CD",
        "type": "bidirectional",
        "description": "Programmable I/O pin, or modem CD (Carrier Detect) input. Selected via IOControl bit 1."
      },
      {
        "number": "23",
        "name": "GPIO7/RI",
        "type": "bidirectional",
        "description": "Programmable I/O pin, or modem RI (Ring Indicator) input. Selected via IOControl bit 1."
      },
      {
        "number": "24",
        "name": "RTS",
        "type": "output",
        "description": "UART request-to-send output, active LOW. Set by MCR[1] (or automatically driven when auto-RTS is enabled via EFR[6]); can also serve as the RS-485 driver direction-control signal."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.nxp.com/docs/en/data-sheet/SC16IS740_750_760.pdf",
        "pages": 61,
        "sha256": "805796f4b2fd33e6",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sc16is750.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sc16is750-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "06543bb8db931da6014200c65d1633892631863b02318f1ec43c083515bb6b06",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "I2C/SPI-to-UART bridge",
      "Channels": "1 UART",
      "FIFO": "64 bytes (TX and RX)",
      "Max baud": "5 Mbps",
      "GPIO": "8 (shared)",
      "Host interface": "I2C or SPI (pin-selected)",
      "Supply": "2.5-3.6 V",
      "Package": "TSSOP-24"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sc16is750",
    "i2c to uart",
    "spi to uart bridge",
    "add uart over i2c"
  ],
  "discovery_pitch": "NXP SC16IS750 I2C/SPI-to-UART bridge (TSSOP-24) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sc16is750.kicad_sym",
    "sc16is750.kicad_mod",
    "sc16is750.glb",
    "sc16is750.step",
    "sc16is750.lbr",
    "docs/hero.png",
    "docs/sc16is750-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sc16is750-etched.step"
  ],
  "variants": [
    {
      "mpn": "SC16IS750IPW (TSSOP-24)",
      "kind": "packaging"
    },
    {
      "mpn": "SC16IS750IBS (HVQFN-24)",
      "kind": "packaging"
    }
  ]
}