component
TRS3237EIDBR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+64@@ -0,0 +1,64 @@+# TRS3237EIDBR++**Texas Instruments** · RS232 ICs · SSOP-28-208mil++TRS3237EIDBR from Texas Instruments, in a SSOP-28-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | C2+ | passive | Positive terminal of the charge-pump flying capacitor C2, which connects between C2+ and C2−. |+| 2 | GND | power_in | Network ground; the datasheet states all voltages are referenced to network GND. |+| 3 | C2− | passive | Negative terminal of the charge-pump flying capacitor C2, which connects between C2+ and C2−. |+| 4 | V− | power_out | Negative charge-pump output supply for the RS-232 drivers; the absolute maximum rating is −7 V, and it is raised toward GND in shutdown. |+| 5 | DOUT1 | output | RS-232 driver 1 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V. |+| 6 | DOUT2 | output | RS-232 driver 2 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V. |+| 7 | DOUT3 | output | RS-232 driver 3 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V. |+| 8 | RIN1 | input | RS-232 receiver 1 input with ±25 V input range and ±15 kV HBM ESD protection. |+| 9 | RIN2 | input | RS-232 receiver 2 input with ±25 V input range and ±15 kV HBM ESD protection. |+| 10 | DOUT4 | output | RS-232 driver 4 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V. |+| 11 | RIN3 | input | RS-232 receiver 3 input with ±25 V input range and ±15 kV HBM ESD protection. |+| 12 | DOUT5 | output | RS-232 driver 5 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V. |+| 13 | EN | input | Receiver enable: driving EN high puts the ROUT outputs in high impedance (ROUT1B stays active); VIH is 2 V min at VCC = 3.3 V and VIL is 0.8 V max. |+| 14 | SHDN | input | Shutdown control: SHDN = GND disables the transmitters, forces DOUT to high impedance, and reduces supply current below 1 mA; VIL is 0.8 V max. |+| 15 | MBAUD | input | Data-rate select: MBAUD = GND sets 250 kbit/s operation and MBAUD = VCC sets up to 1 Mbit/s operation; logic input limits are VIH 2 V min and VIL 0.8 V max. |+| 16 | ROUT1B | output | Receiver 1 logic output that remains active at all times, regardless of the EN and SHDN states. |+| 17 | DIN5 | input | Driver 5 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max. |+| 18 | ROUT3 | output | Receiver 3 logic output, forced to high impedance when EN is high. |+| 19 | DIN4 | input | Driver 4 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max. |+| 20 | ROUT2 | output | Receiver 2 logic output, forced to high impedance when EN is high. |+| 21 | ROUT1 | output | Receiver 1 logic output, forced to high impedance when EN is high. |+| 22 | DIN3 | input | Driver 3 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max. |+| 23 | DIN2 | input | Driver 2 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max. |+| 24 | DIN1 | input | Driver 1 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max. |+| 25 | C1− | passive | Negative terminal of the charge-pump flying capacitor C1, which connects between C1+ and C1−. |+| 26 | VCC | power_in | Logic and device supply, 3 V to 5.5 V; absolute maximum rating is −0.3 V to 6 V. |+| 27 | V+ | power_out | Positive charge-pump output supply for the RS-232 drivers; absolute maximum rating is 7 V, and it is lowered to VCC in shutdown. |+| 28 | C1+ | passive | Positive terminal of the charge-pump flying capacitor C1, which connects between C1+ and C1−. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-28-208mil |+| Category | Interface |+| Pins | 28 |++## CAD (KiCad official)++- Symbol: `TRS3237EIDBR`+- Footprint: `Package_SO:SSOP-28_5.3x10.2mm_P0.65mm`+- 3D model: SSOP-28-208mil (KiCad packages3D, STEP)+- 3D model files: `trs3237eidbr-etched.step` / `trs3237eidbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `trs3237eidbr.step` / `trs3237eidbr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/trs3237e) (18 pp, sha256 `b972aab2d1469ca9`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/trs3237eidbr-datasheet.pdf)
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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "trs3237eidbr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "trs3237eidbr.kicad_sym",+ "trs3237eidbr.kicad_mod",+ "trs3237eidbr.glb",+ "trs3237eidbr.step",+ "trs3237eidbr.lbr",+ "docs/hero.png",+ "docs/trs3237eidbr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "trs3237eidbr-hero.glb",+ "trs3237eidbr-hero.overlay.json"+ ],+ "component": {+ "mpn": "TRS3237EIDBR",+ "manufacturer": "Texas Instruments",+ "package": "SSOP-28-208mil",+ "pin_count": 28,+ "category": "Interface",+ "subcategory": "RS232 ICs",+ "datasheet": "https://www.ti.com/cn/lit/gpn/trs3237e",+ "parts": {+ "symbol": "trs3237eidbr.kicad_sym",+ "footprint": "trs3237eidbr.kicad_mod",+ "model_3d": "trs3237eidbr-hero.glb",+ "model_3d_plain": "trs3237eidbr.glb",+ "model_3d_step": "trs3237eidbr-etched.step",+ "model_3d_step_plain": "trs3237eidbr.step",+ "lbr": "trs3237eidbr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2671801",+ "digikey": "296-22599-2-ND",+ "mouser": "595-TRS3237EIDBR"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T16:02:32Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-22599-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-TRS3237EIDBR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "C2+",+ "type": "passive",+ "description": "Positive terminal of the charge-pump flying capacitor C2, which connects between C2+ and C2−."+ },+ {+ "number": "2",+ "name": "GND",+ "type": "power_in",+ "description": "Network ground; the datasheet states all voltages are referenced to network GND."+ },+ {+ "number": "3",+ "name": "C2−",+ "type": "passive",+ "description": "Negative terminal of the charge-pump flying capacitor C2, which connects between C2+ and C2−."+ },+ {+ "number": "4",+ "name": "V−",+ "type": "power_out",+ "description": "Negative charge-pump output supply for the RS-232 drivers; the absolute maximum rating is −7 V, and it is raised toward GND in shutdown."+ },+ {+ "number": "5",+ "name": "DOUT1",+ "type": "output",+ "description": "RS-232 driver 1 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."+ },+ {+ "number": "6",+ "name": "DOUT2",+ "type": "output",+ "description": "RS-232 driver 2 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."+ },+ {+ "number": "7",+ "name": "DOUT3",+ "type": "output",+ "description": "RS-232 driver 3 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."+ },+ {+ "number": "8",+ "name": "RIN1",+ "type": "input",+ "description": "RS-232 receiver 1 input with ±25 V input range and ±15 kV HBM ESD protection."+ },+ {+ "number": "9",+ "name": "RIN2",+ "type": "input",+ "description": "RS-232 receiver 2 input with ±25 V input range and ±15 kV HBM ESD protection."+ },+ {+ "number": "10",+ "name": "DOUT4",+ "type": "output",+ "description": "RS-232 driver 4 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."+ },+ {+ "number": "11",+ "name": "RIN3",+ "type": "input",+ "description": "RS-232 receiver 3 input with ±25 V input range and ±15 kV HBM ESD protection."+ },+ {+ "number": "12",+ "name": "DOUT5",+ "type": "output",+ "description": "RS-232 driver 5 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."+ },+ {+ "number": "13",+ "name": "EN",+ "type": "input",+ "description": "Receiver enable: driving EN high puts the ROUT outputs in high impedance (ROUT1B stays active); VIH is 2 V min at VCC = 3.3 V and VIL is 0.8 V max."+ },+ {+ "number": "14",+ "name": "SHDN",+ "type": "input",+ "description": "Shutdown control: SHDN = GND disables the transmitters, forces DOUT to high impedance, and reduces supply current below 1 mA; VIL is 0.8 V max."+ },+ {+ "number": "15",+ "name": "MBAUD",+ "type": "input",+ "description": "Data-rate select: MBAUD = GND sets 250 kbit/s operation and MBAUD = VCC sets up to 1 Mbit/s operation; logic input limits are VIH 2 V min and VIL 0.8 V max."+ },+ {+ "number": "16",+ "name": "ROUT1B",+ "type": "output",+ "description": "Receiver 1 logic output that remains active at all times, regardless of the EN and SHDN states."+ },+ {+ "number": "17",+ "name": "DIN5",+ "type": "input",+ "description": "Driver 5 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."+ },+ {+ "number": "18",+ "name": "ROUT3",+ "type": "output",+ "description": "Receiver 3 logic output, forced to high impedance when EN is high."+ },+ {+ "number": "19",+ "name": "DIN4",+ "type": "input",+ "description": "Driver 4 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."+ },+ {+ "number": "20",+ "name": "ROUT2",+ "type": "output",+ "description": "Receiver 2 logic output, forced to high impedance when EN is high."+ },+ {+ "number": "21",+ "name": "ROUT1",+ "type": "output",+ "description": "Receiver 1 logic output, forced to high impedance when EN is high."+ },+ {+ "number": "22",+ "name": "DIN3",+ "type": "input",+ "description": "Driver 3 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."+ },+ {+ "number": "23",+ "name": "DIN2",+ "type": "input",+ "description": "Driver 2 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."+ },+ {+ "number": "24",+ "name": "DIN1",+ "type": "input",+ "description": "Driver 1 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."+ },+ {+ "number": "25",+ "name": "C1−",+ "type": "passive",+ "description": "Negative terminal of the charge-pump flying capacitor C1, which connects between C1+ and C1−."+ },+ {+ "number": "26",+ "name": "VCC",+ "type": "power_in",+ "description": "Logic and device supply, 3 V to 5.5 V; absolute maximum rating is −0.3 V to 6 V."+ },+ {+ "number": "27",+ "name": "V+",+ "type": "power_out",+ "description": "Positive charge-pump output supply for the RS-232 drivers; absolute maximum rating is 7 V, and it is lowered to VCC in shutdown."+ },+ {+ "number": "28",+ "name": "C1+",+ "type": "passive",+ "description": "Positive terminal of the charge-pump flying capacitor C1, which connects between C1+ and C1−."+ }+ ],+ "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 gives the DB (SSOP-28) pinout only as a shared top-view figure. Pin numbers were assig; The datasheet's Table 1 lists the TRS3237EIDBR as SSOP-DB, and the package addendum lists it as 28-p; No pins were marked N.C. or unconnected in the DB package. The N.C. pins apply only to the RHB (QFN)"+ ],+ "pages_sent": 18,+ "cost_usd": 0.101,+ "at": "2026-10-08T16:02:10"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/trs3237e",+ "pages": 18,+ "sha256": "b972aab2d1469ca9",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 28,+ "described": 28,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "trs3237eidbr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.8,+ 10.2,+ 2.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "7aa76979ae41da44bded1ed74115012868f2f3f5a757faf32bb9df4f92c1e313",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "trs3237eidbr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.8,+ 10.2,+ 2.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "25b0dd2930a0df740e78337c744463bb98f7191e52c863cb950faa36ab1c2008",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}