component
SSP721A
Public Made by Adomby adom
Shanghai Siproin Microelectronics RF Transceiver ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"description": "Shanghai Siproin Microelectronics RF Transceiver ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
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"radio frequency chip-antenna",
"ssp721a",
"factory-2.0.0",
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"component": {
"mpn": "SSP721A",
"manufacturer": "Shanghai Siproin Microelectronics",
"package": "SOP-16",
"pin_count": 16,
"category": "Radio Frequency Chip/Antenna",
"subcategory": "RF Transceiver ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/78d6c908716c0195966245982c6a86a8.pdf",
"parts": {
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"lbr": "ssp721a.lbr"
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"distributor_links": {
"lcsc": "C330937"
},
"distributor_check": {
"checked_at": "2026-11-05T05:26:22Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "BUSL2",
"type": "passive",
"description": "Connects to the meter bus; the BUSL2-BUSL1 bus voltage is rated ±50 V absolute maximum, with 10.8-42 V recommended for receive and 12-42 V for transmit."
},
{
"number": "2",
"name": "VB",
"type": "power_in",
"description": "Rectified bus signal node after the bridge rectifier, for which the datasheet lists a 9.3 V receive-mode input voltage condition."
},
{
"number": "3",
"name": "STC",
"type": "passive",
"description": "External power-holding capacitor node, where the basic application requires CSTC above 50 µF and STC reads 5.6-6.4 V with VDD on."
},
{
"number": "4",
"name": "RIDD",
"type": "passive",
"description": "Connects the external resistor that sets the CS1 current, with 13-80 kΩ recommended and bus current of 3 mA at 13 kΩ or 1.5 mA at 30 kΩ."
},
{
"number": "5",
"name": "PF",
"type": "output",
"description": "Undervoltage indication output, specified at 0-0.6 V low (IPF=−1 µA) and VBAT−0.6 V high (IPF=−100 µA)."
},
{
"number": "6",
"name": "SC",
"type": "passive",
"description": "External sampling capacitor node, with SC charge current specified at −15 µA minimum and −40 µA typical."
},
{
"number": "7",
"name": "TXI",
"type": "output",
"description": "Inverted data signal output, with VOL at most 0.5 V and VOH at least VBAT−0.6 V under 100 µA load."
},
{
"number": "8",
"name": "TX",
"type": "output",
"description": "Data signal output, with VOL at most 0.5 V and VOH at least VBAT−0.6 V under 100 µA load."
},
{
"number": "9",
"name": "BAT",
"type": "input",
"description": "Logic-level adjustment input, recommended at 2.5-3.8 V, must not exceed VSTC−1 V, and is absolute-rated to −0.3 to 5.5 V."
},
{
"number": "10",
"name": "VS",
"type": "power_in",
"description": "Output that switches between bus-powered and battery-powered supply modes, with output resistance of 0.3-1 MΩ when VDD is off."
},
{
"number": "11",
"name": "VDD",
"type": "power_out",
"description": "Regulated supply output of 3.1-3.4 V at 1 mA with STC at 6.5 V, and output resistance of 5 Ω for 2-8 mA."
},
{
"number": "12",
"name": "RX",
"type": "input",
"description": "Data signal input, with absolute range −0.3 to 5.5 V, high level of VBAT−0.8 V minimum (up to 5.5 V when VSTC≥6.5 V), and low level of 0.8 V maximum."
},
{
"number": "13",
"name": "RXI",
"type": "input",
"description": "Inverted data signal input, with absolute range −0.3 to 5.5 V and input current of 10-40 µA when VRXI=VBAT=3 V."
},
{
"number": "14",
"name": "RIS",
"type": "passive",
"description": "Connects the external modulation-current setting resistor, with a minimum of 100 Ω, giving 11.5-19.5 mA modulation current at 100 Ω."
},
{
"number": "15",
"name": "GND",
"type": "power_in",
"description": "Ground reference; all voltages in the datasheet are referenced to the GND pin."
},
{
"number": "16",
"name": "BUSL1",
"type": "passive",
"description": "Connects to the meter bus as the other end of the BUSL2-BUSL1 pair, which is rated ±50 V absolute maximum."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet does not classify pin electrical types; bus, rectifier, capacitor and resistor nodes w; Output types (PF, TXI, TX, VS, VDD) were inferred from the Chinese pin description and the test cond; The datasheet lists VB(receive) 9.3 V in a table whose min/max column is ambiguous in the text, so t"
],
"pages_sent": 7,
"cost_usd": 0.0357,
"at": "2026-11-05T05:26:09"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/78d6c908716c0195966245982c6a86a8.pdf",
"pages": 7,
"sha256": "f1f4ce622db7684a",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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{
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