component
TRS3237ECDBR
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 @@+# TRS3237ECDBR++**Texas Instruments** · RS232 ICs · SSOP-28-208mil++TRS3237ECDBR 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 charge-pump capacitor C2 of the dual charge pump; the device uses four external capacitors (C1-C4) for operation from 3 V to 5.5 V. |+| 2 | GND | power_in | Network ground; all device voltages are referenced to network GND. |+| 3 | C2− | passive | Negative terminal of charge-pump capacitor C2 of the dual charge pump. |+| 4 | V− | power_out | Charge-pump generated negative supply for the RS-232 drivers; rated to −7 V absolute maximum, with V+ − V− not exceeding 13 V. |+| 5 | DOUT1 | output | RS-232 driver output 1, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND. |+| 6 | DOUT2 | output | RS-232 driver output 2, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND. |+| 7 | DOUT3 | output | RS-232 driver output 3, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND. |+| 8 | RIN1 | input | RS-232 receiver input 1, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance. |+| 9 | RIN2 | input | RS-232 receiver input 2, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance. |+| 10 | DOUT4 | output | RS-232 driver output 4, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND. |+| 11 | RIN3 | input | RS-232 receiver input 3, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance. |+| 12 | DOUT5 | output | RS-232 driver output 5, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND. |+| 13 | EN | input | Receiver enable input; setting EN high places the receiver outputs (except ROUT1B) in high impedance. |+| 14 | SHDN | input | Shutdown input; driving SHDN to GND disables the transmitters, forces DOUT high impedance, disables the charge pump and limits supply current to less than 1 mA. |+| 15 | MBAUD | input | Data-rate select input; GND selects 250 kbit/s operation and VCC selects up to 1 Mbit/s operation. |+| 16 | ROUT1B | output | Receiver output 1B, remains active regardless of the EN and SHDN states. |+| 17 | DIN5 | input | Driver input 5 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum. |+| 18 | ROUT3 | output | Receiver logic output 3, with VOH of at least VCC − 0.6 V at IOH = −1 mA. |+| 19 | DIN4 | input | Driver input 4 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum. |+| 20 | ROUT2 | output | Receiver logic output 2, with VOH of at least VCC − 0.6 V at IOH = −1 mA. |+| 21 | ROUT1 | output | Receiver logic output 1, with VOH of at least VCC − 0.6 V at IOH = −1 mA. |+| 22 | DIN3 | input | Driver input 3 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum. |+| 23 | DIN2 | input | Driver input 2 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum. |+| 24 | DIN1 | input | Driver input 1 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum. |+| 25 | C1− | passive | Negative terminal of charge-pump capacitor C1 of the dual charge pump. |+| 26 | VCC | power_in | Supply voltage input, 3 V to 5.5 V (3.3 V ±0.3 V or 5 V ±0.5 V), with −0.3 V to 6 V absolute maximum. |+| 27 | V+ | power_out | Charge-pump generated positive supply for the RS-232 drivers; rated to 7 V absolute maximum. |+| 28 | C1+ | passive | Positive terminal of charge-pump capacitor C1 of the dual charge pump. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-28-208mil |+| Category | Interface |+| Pins | 28 |++## CAD (KiCad official)++- Symbol: `TRS3237ECDBR`+- Footprint: `Package_SO:SSOP-28_5.3x10.2mm_P0.65mm`+- 3D model: SSOP-28-208mil (KiCad packages3D, STEP)+- 3D model files: `trs3237ecdbr-etched.step` / `trs3237ecdbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `trs3237ecdbr.step` / `trs3237ecdbr.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/trs3237ecdbr-datasheet.pdf)
page.jsonadded+321@@ -0,0 +1,321 @@+{+ "slug": "trs3237ecdbr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments RS232 ICs, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "trs3237ecdbr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "trs3237ecdbr.kicad_sym",+ "trs3237ecdbr.kicad_mod",+ "trs3237ecdbr.glb",+ "trs3237ecdbr.step",+ "trs3237ecdbr.lbr",+ "docs/hero.png",+ "docs/trs3237ecdbr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "trs3237ecdbr-hero.glb",+ "trs3237ecdbr-hero.overlay.json"+ ],+ "component": {+ "mpn": "TRS3237ECDBR",+ "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": "trs3237ecdbr.kicad_sym",+ "footprint": "trs3237ecdbr.kicad_mod",+ "model_3d": "trs3237ecdbr-hero.glb",+ "model_3d_plain": "trs3237ecdbr.glb",+ "model_3d_step": "trs3237ecdbr-etched.step",+ "model_3d_step_plain": "trs3237ecdbr.step",+ "lbr": "trs3237ecdbr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2672586",+ "digikey": "296-25042-2-ND",+ "mouser": "595-TRS3237ECDBR"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T16:02:52Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-25042-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-TRS3237ECDBR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "C2+",+ "type": "passive",+ "description": "Positive terminal of charge-pump capacitor C2 of the dual charge pump; the device uses four external capacitors (C1-C4) for operation from 3 V to 5.5 V."+ },+ {+ "number": "2",+ "name": "GND",+ "type": "power_in",+ "description": "Network ground; all device voltages are referenced to network GND."+ },+ {+ "number": "3",+ "name": "C2−",+ "type": "passive",+ "description": "Negative terminal of charge-pump capacitor C2 of the dual charge pump."+ },+ {+ "number": "4",+ "name": "V−",+ "type": "power_out",+ "description": "Charge-pump generated negative supply for the RS-232 drivers; rated to −7 V absolute maximum, with V+ − V− not exceeding 13 V."+ },+ {+ "number": "5",+ "name": "DOUT1",+ "type": "output",+ "description": "RS-232 driver output 1, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."+ },+ {+ "number": "6",+ "name": "DOUT2",+ "type": "output",+ "description": "RS-232 driver output 2, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."+ },+ {+ "number": "7",+ "name": "DOUT3",+ "type": "output",+ "description": "RS-232 driver output 3, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."+ },+ {+ "number": "8",+ "name": "RIN1",+ "type": "input",+ "description": "RS-232 receiver input 1, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance."+ },+ {+ "number": "9",+ "name": "RIN2",+ "type": "input",+ "description": "RS-232 receiver input 2, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance."+ },+ {+ "number": "10",+ "name": "DOUT4",+ "type": "output",+ "description": "RS-232 driver output 4, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."+ },+ {+ "number": "11",+ "name": "RIN3",+ "type": "input",+ "description": "RS-232 receiver input 3, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance."+ },+ {+ "number": "12",+ "name": "DOUT5",+ "type": "output",+ "description": "RS-232 driver output 5, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."+ },+ {+ "number": "13",+ "name": "EN",+ "type": "input",+ "description": "Receiver enable input; setting EN high places the receiver outputs (except ROUT1B) in high impedance."+ },+ {+ "number": "14",+ "name": "SHDN",+ "type": "input",+ "description": "Shutdown input; driving SHDN to GND disables the transmitters, forces DOUT high impedance, disables the charge pump and limits supply current to less than 1 mA."+ },+ {+ "number": "15",+ "name": "MBAUD",+ "type": "input",+ "description": "Data-rate select input; GND selects 250 kbit/s operation and VCC selects up to 1 Mbit/s operation."+ },+ {+ "number": "16",+ "name": "ROUT1B",+ "type": "output",+ "description": "Receiver output 1B, remains active regardless of the EN and SHDN states."+ },+ {+ "number": "17",+ "name": "DIN5",+ "type": "input",+ "description": "Driver input 5 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."+ },+ {+ "number": "18",+ "name": "ROUT3",+ "type": "output",+ "description": "Receiver logic output 3, with VOH of at least VCC − 0.6 V at IOH = −1 mA."+ },+ {+ "number": "19",+ "name": "DIN4",+ "type": "input",+ "description": "Driver input 4 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."+ },+ {+ "number": "20",+ "name": "ROUT2",+ "type": "output",+ "description": "Receiver logic output 2, with VOH of at least VCC − 0.6 V at IOH = −1 mA."+ },+ {+ "number": "21",+ "name": "ROUT1",+ "type": "output",+ "description": "Receiver logic output 1, with VOH of at least VCC − 0.6 V at IOH = −1 mA."+ },+ {+ "number": "22",+ "name": "DIN3",+ "type": "input",+ "description": "Driver input 3 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."+ },+ {+ "number": "23",+ "name": "DIN2",+ "type": "input",+ "description": "Driver input 2 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."+ },+ {+ "number": "24",+ "name": "DIN1",+ "type": "input",+ "description": "Driver input 1 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."+ },+ {+ "number": "25",+ "name": "C1−",+ "type": "passive",+ "description": "Negative terminal of charge-pump capacitor C1 of the dual charge pump."+ },+ {+ "number": "26",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage input, 3 V to 5.5 V (3.3 V ±0.3 V or 5 V ±0.5 V), with −0.3 V to 6 V absolute maximum."+ },+ {+ "number": "27",+ "name": "V+",+ "type": "power_out",+ "description": "Charge-pump generated positive supply for the RS-232 drivers; rated to 7 V absolute maximum."+ },+ {+ "number": "28",+ "name": "C1+",+ "type": "passive",+ "description": "Positive terminal of charge-pump capacitor C1 of the dual charge pump."+ }+ ],+ "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: Pin-number mapping was inferred from the text-extracted DB/DW/PW top-view diagram on page 1 (labels ; Pin descriptions are summarized from absolute-maximum, recommended-operating and electrical-characte; The DB (SSOP-28) variant is the one matching TRS3237ECDBR. The same pin list applies to the DW and P",+ "8/28 pins cited to the wrong page (name found elsewhere): ['8:RIN1@p6', '9:RIN2@p6', '11:RIN3@p6', '18:ROUT3@p6']"+ ],+ "pages_sent": 18,+ "cost_usd": 0.1028,+ "at": "2026-10-08T16:02:28"+ },+ "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": "trs3237ecdbr.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": "trs3237ecdbr-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": "6b9198863bfe924d2132debea3c6bad4a7a98c31236e5c6e071966f735f7dcae",+ "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]"+ }+}