component
TLC3548CDWR
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADC), SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "TLC3548CDWR",
"brief": "Texas Instruments Analog To Digital Converters (ADC), SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"mpn": "TLC3548CDWR",
"manufacturer": "Texas Instruments",
"package": "SOIC-24-300mil",
"pin_count": 24,
"category": "Data Acquisition",
"subcategory": "Analog To Digital Converters (ADC)",
"datasheet": "https://www.ti.com/cn/lit/gpn/tlc3544",
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"lcsc": "C2670972",
"digikey": "TLC3548CDWR-ND",
"mouser": "595-TLC3548CDWR"
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"pins": [
{
"number": "1",
"name": "SCLK",
"type": "input",
"description": "Serial clock input that clocks SDI in and SDO out, and can serve as the conversion clock when the external clock is selected; it is enabled for data transfer only while CS is low."
},
{
"number": "2",
"name": "FS",
"type": "input",
"description": "Frame sync input from the DSP that marks the start of a serial data frame; it must be tied to DVDD if not used."
},
{
"number": "3",
"name": "SDI",
"type": "input",
"description": "Serial data input that carries the 4-bit command and, for WRITE CFR, 12 bits of configuration data latched on SCLK falling edges; it must be tied to DVDD for hardware default mode."
},
{
"number": "4",
"name": "EOC/INT",
"type": "output",
"description": "End-of-conversion output (EOC, one-shot mode 00 only) or interrupt output to the host (INT), where a falling edge indicates data is ready and INT is cleared by CS↓, FS↑, or CSTART↓."
},
{
"number": "5",
"name": "SDO",
"type": "tri_state",
"description": "3-state serial data output that shifts out the conversion result MSB first and is in high-impedance state when CS is high."
},
{
"number": "6",
"name": "DGND",
"type": "power_in",
"description": "Digital ground return for the internal digital circuitry."
},
{
"number": "7",
"name": "DVDD",
"type": "power_in",
"description": "Digital supply voltage, operating from a 3-V to 5-V digital supply."
},
{
"number": "8",
"name": "CS",
"type": "input",
"description": "Chip select: when high, SDO is high-impedance, SDI is ignored, and SCLK is disabled for data transfer; its falling edge resets the 4-bit counter and enables SDI, SCLK, and SDO."
},
{
"number": "9",
"name": "A0",
"type": "input",
"description": "Analog signal input channel 0, internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "10",
"name": "A1",
"type": "input",
"description": "Analog signal input channel 1, internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "11",
"name": "A2",
"type": "input",
"description": "Analog signal input channel 2, internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "12",
"name": "A3",
"type": "input",
"description": "Analog signal input channel 3, internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "13",
"name": "A4",
"type": "input",
"description": "Analog signal input channel 4 (TLC3548 only), internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "14",
"name": "A5",
"type": "input",
"description": "Analog signal input channel 5 (TLC3548 only), internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "15",
"name": "A6",
"type": "input",
"description": "Analog signal input channel 6 (TLC3548 only), internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "16",
"name": "A7",
"type": "input",
"description": "Analog signal input channel 7 (TLC3548 only), internally multiplexed, with a driving source impedance of 1 kΩ or less recommended for normal sampling."
},
{
"number": "17",
"name": "AVDD",
"type": "power_in",
"description": "Analog supply voltage; the device operates from a single 5-V analog supply."
},
{
"number": "18",
"name": "AGND",
"type": "power_in",
"description": "Analog ground return for the internal circuitry, with all analog voltage measurements referenced to AGND."
},
{
"number": "19",
"name": "REFP",
"type": "input",
"description": "External positive reference input, which can be 3 V to 5 V and must be decoupled with 10 µF in parallel with 0.1 µF to REFM."
},
{
"number": "20",
"name": "REFM",
"type": "input",
"description": "External low reference input that must be connected to AGND."
},
{
"number": "21",
"name": "BGAP",
"type": "passive",
"description": "Internal bandgap compensation pin, with 0.1 µF to AGND for an external reference or 10 µF in parallel with 0.1 µF to AGND for the internal reference."
},
{
"number": "22",
"name": "AGND",
"type": "power_in",
"description": "Analog ground return for the internal circuitry, with all analog voltage measurements referenced to AGND."
},
{
"number": "23",
"name": "AVDD",
"type": "power_in",
"description": "Analog supply voltage; the device operates from a single 5-V analog supply."
},
{
"number": "24",
"name": "CSTART",
"type": "input",
"description": "External sampling trigger in extended sampling mode, where a high-to-low edge starts sampling and a low-to-high edge starts conversion; the first CSTART cannot occur before the rising edge of the 11th SCLK, and it must be tied to DVDD if not used."
}
],
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet's terminal table classifies BGAP as 'I' (input), but it is a compensation-capacitor no; The page-1 drawing is a single top-view figure labelled 'DW OR PW PACKAGE' and covers both TLC3544 a; SDO is described as a 3-state output, so it is typed tri_state rather than output."
],
"pages_sent": 15,
"cost_usd": 0.1124,
"at": "2026-10-08T22:58:43"
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"pages": 50,
"sha256": "8b7afcf5259b323c",
"source_tier": "lcsc"
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"described": 24,
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-24-300mil",
"Category": "Data Acquisition",
"Pins": "24"
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