component
HD3SS3212RKSR
Public Made by Adomby adom
Texas Instruments Analog Switches - Special Purpose, TQFN-20-EP(2.5x4.5). KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet.
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README.md+58−1@@ -1,3 +1,60 @@ # HD3SS3212RKSR -Texas Instruments Analog Switches - Special Purpose, TQFN-20-EP(2.5x4.5). KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet.+::adom-verified{src="/adom/hd3ss3212rksr/render/verification.json"}++**Texas Instruments** · Analog Switches - Special Purpose · TQFN-20-EP(2.5x4.5)++HD3SS3212RKSR from Texas Instruments, in a TQFN-20-EP(2.5x4.5). Symbol, footprint and 3D model are the ones used on Adom board designs (3D model extracted from the board STEP export, seated in the footprint frame). Pin functions are extracted from the manufacturer datasheet with page references. **Staged for validation: see the open items in the verification log above.**++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | RSVD1 | output | _not yet described_ |+| 2 | OEN | input | Active-low chip enable. L: Normal operation. H: Shutdown. Input high voltage 2 V to VCC; input low voltage -0.1 V to 0.8 V. [datasheet p.3] |+| 3 | A0P | bidirectional | Port A, channel 0, high-speed positive signal. Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 4 | A0N | bidirectional | Port A, channel 0, high-speed negative signal. Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 5 | GND | power_in | Ground reference. [datasheet p.3] |+| 6 | VCC | power_in | 3.3-V power supply. Recommended operating range 3.0 to 3.6 V. Active current typ 0.6 mA, shutdown current typ 5 µA. [datasheet p.3] |+| 7 | A1P | bidirectional | Port A, channel 1, high-speed positive signal. Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 8 | A1N | bidirectional | Port A, channel 1, high-speed negative signal. Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 9 | SEL | input | Port select pin. Internally tied to GND via a 100-kΩ resistor. L: Port A to Port B. H: Port A to Port C. [datasheet p.3] |+| 10 | RSVD2 | output | _not yet described_ |+| 11 | GND | power_in | Ground reference. [datasheet p.3] |+| 12 | C1N | bidirectional | Port C, channel 1, high-speed negative signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 13 | C1P | bidirectional | Port C, channel 1, high-speed positive signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 14 | C0N | bidirectional | Port C, channel 0, high-speed negative signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 15 | C0P | bidirectional | Port C, channel 0, high-speed positive signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 16 | B1N | bidirectional | Port B, channel 1, high-speed negative signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 17 | B1P | bidirectional | Port B, channel 1, high-speed positive signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 18 | B0N | bidirectional | Port B, channel 0, high-speed negative signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 19 | B0P | bidirectional | Port B, channel 0, high-speed positive signal (connector side). Differential signaling up to 1.8 Vpp, common-mode 0-2 V. 20 kΩ internal pulldown switched in when port is not selected. [datasheet p.3] |+| 20 | GND | power_in | Ground reference. [datasheet p.3] |+| 21 | PAD | power_in | _not yet described_ |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TQFN-20-EP(2.5x4.5) |+| Category | Interface |+| Pins | 21 |+| LCSC | C129320 |+| Distributor summary (LCSC listing, not datasheet) | 0.6pF 0℃~+70℃ 2 2.7V~3.6V 2:1 500ns 500ns 5Ω 80ps 8GHz TQFN-20-EP(2.5x4.5) Analog Switches, Multiplexers ROHS |++## CAD++- Symbol: `hd3ss3212rksr` (source library `SSMUX_HD3SS3212IRKSR:HD3SS3212IRKSR`)+- Footprint: `mux_CDT:HD3SS3212IRKSR_QFN50P450X250X100-21N`+- 3D model path in footprint: `${KIPRJMOD}/hd3ss3212rksr.step`+- 3D files: `hd3ss3212rksr-etched.step` / `hd3ss3212rksr-etched.glb` carry the MPN etch as a separate `Adom.LaserEtch` part; `hd3ss3212rksr.step` / `hd3ss3212rksr.glb` are the bare model.+- EAGLE/Fusion library: `hd3ss3212rksr.lbr` (adom-lbr)++## Provenance++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/hd3ss3212) (sha256 `8705f74edcc5c08b`, retrieved 2026-10-08, tier: lcsc)+- **CAD:** Footprint, symbol and 3D model as used on Adom board designs; the 3D model was extracted from the board STEP export.+- **Pins:** KiCad symbol from the source board + adom-ds2sf datasheet extraction (claude-opus-4-7).++[Datasheet PDF](docs/hd3ss3212rksr-datasheet.pdf)
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pad="1"/>+ <connect gate="G$1" pin="OEN" pad="2"/>+ <connect gate="G$1" pin="A0P" pad="3"/>+ <connect gate="G$1" pin="A0N" pad="4"/>+ <connect gate="G$1" pin="GND" pad="5"/>+ <connect gate="G$1" pin="VCC" pad="6"/>+ <connect gate="G$1" pin="A1P" pad="7"/>+ <connect gate="G$1" pin="A1N" pad="8"/>+ <connect gate="G$1" pin="SEL" pad="9"/>+ <connect gate="G$1" pin="RSVD2" pad="10"/>+ <connect gate="G$1" pin="C1N" pad="12"/>+ <connect gate="G$1" pin="C1P" pad="13"/>+ <connect gate="G$1" pin="C0N" pad="14"/>+ <connect gate="G$1" pin="C0P" pad="15"/>+ <connect gate="G$1" pin="B1N" pad="16"/>+ <connect gate="G$1" pin="B1P" pad="17"/>+ <connect gate="G$1" pin="B0N" pad="18"/>+ <connect gate="G$1" pin="B0P" pad="19"/>+ <connect gate="G$1" pin="GND@2" pad="11"/>+ <connect gate="G$1" pin="GND@3" pad="20"/>+ <connect gate="G$1" pin="PAD" pad="21"/>+ </connects>+ <technologies>+ <technology name="">+ <attribute name="MPN" value="HD3SS3212RKSR" constant="no"/>+ <attribute name="MANUFACTURER" value="Texas Instruments" constant="no"/>+ <attribute name="DATASHEET" value="https://www.ti.com/cn/lit/gpn/hd3ss3212" constant="no"/>+ <attribute name="ADOM_WIKI" value="https://wiki.adom.inc/adom/hd3ss3212rksr" constant="no"/>+ <attribute name="MOUSER_PN" value="595-HD3SS3212RKSR" constant="no"/>+ <attribute name="DIGIKEY_PN" value="296-42174-2-ND" constant="no"/>+ <attribute name="LCSC_PN" value="C129320" constant="no"/>+ </technology>+ </technologies>+ </device>+ </devices>+</deviceset>+</devicesets>+</library>+</drawing>+</eagle>
verification.jsonadded+150@@ -0,0 +1,150 @@+{+ "schema": "adom/verification@1",+ "part": "HD3SS3212RKSR",+ "variants": [],+ "entries": [+ {+ "date": "2026-10-08",+ "by": {+ "name": "Claude (AI build)",+ "handle": "claude"+ },+ "status": "open",+ "title": "Automated build checks (awaiting human validation)",+ "scope": [+ "symbol",+ "footprint",+ "3d",+ "pins"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "Footprint extracted pad-for-pad from the source board and normalized to the footprint frame (back-side parts un-mirrored)",+ "result": "pass"+ },+ {+ "text": "3D model seated z=0 at footprint origin (placement inverse; method centroid-matched to KiCad library models on 59 cases)",+ "result": "pass"+ },+ {+ "text": "adom-lbr generate + lint passed",+ "result": "pass"+ },+ {+ "text": "18 of 21 pins described from the datasheet (adom-ds2sf, page-cited)",+ "result": "note"+ },+ {+ "text": "Not yet checked by a person: land pattern vs datasheet, pin-1/orientation, 3D body vs drawing",+ "result": "note"+ }+ ],+ "evidence": [+ {+ "label": "datasheet",+ "href": "docs/hd3ss3212rksr-datasheet.pdf"+ }+ ],+ "files": {+ "hd3ss3212rksr.kicad_sym": "50546f4632bb363ab76cf31b3419dec89d8387e53519e8735d922ecc11830727",+ "hd3ss3212rksr.kicad_mod": "946b1a376c8f77b917585cba3be9283611883dc885d79ddf3aa4977007894d72",+ "hd3ss3212rksr.step": "06e9b308ad8d3fed4f7a36fa36fb661dfd9feed1ccfac283eeabad9ece45095f"+ }+ },+ {+ "date": "2026-10-08",+ "by": {+ "name": "Claude (AI build)",+ "handle": "claude"+ },+ "status": "open",+ "title": "The source 3D model is TI's generic RKS package model (named LSF0108RKSR); body dimensions...",+ "scope": [+ "review"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "The source 3D model is TI's generic RKS package model (named LSF0108RKSR); body dimensions match the RKS package but it is not part-specific.",+ "result": "note"+ }+ ],+ "evidence": [],+ "files": {}+ },+ {+ "date": "2026-10-08",+ "by": {+ "name": "Claude (AI build)",+ "handle": "claude"+ },+ "status": "open",+ "title": "3 of 21 pins have no datasheet description yet (pins 1, 10, 21).",+ "scope": [+ "review"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "3 of 21 pins have no datasheet description yet (pins 1, 10, 21).",+ "result": "note"+ }+ ],+ "evidence": [],+ "files": {}+ },+ {+ "date": "2026-10-08",+ "by": {+ "name": "Claude (AI build)",+ "handle": "claude"+ },+ "status": "open",+ "title": "Pin names differ between the board symbol and the datasheet (often equivalent naming; chec...",+ "scope": [+ "review"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "Pin names differ between the board symbol and the datasheet (often equivalent naming; check): 1: symbol \"RSVD1\" vs datasheet \"NC\"; 10: symbol \"RSVD2\" vs datasheet \"NC\"",+ "result": "note"+ }+ ],+ "evidence": [],+ "files": {}+ },+ {+ "date": "2026-10-08",+ "by": {+ "name": "Claude (AI build)",+ "handle": "claude"+ },+ "status": "open",+ "title": "Datasheet pins not matched to a symbol pin: NC",+ "scope": [+ "review"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "Datasheet pins not matched to a symbol pin: NC",+ "result": "note"+ }+ ],+ "evidence": [],+ "files": {}+ }+ ]+}