component
TRS3243IDBR
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+65@@ -0,0 +1,65 @@+# TRS3243IDBR++**Texas Instruments** · RS232 ICs · SSOP-28-208mil++TRS3243IDBR 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 voltage-doubler charge-pump capacitor, with the capacitor value set per the VCC versus capacitor table (Table 9-1). |+| 2 | C2- | passive | Negative terminal of the voltage-doubler charge-pump capacitor, with the capacitor value set per the VCC versus capacitor table (Table 9-1). |+| 3 | V- | power_out | Negative charge-pump output voltage; the V- supply is rated to -7 V absolute maximum and the V+ - V- difference to 13 V. |+| 4 | RIN1 | input | RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ. |+| 5 | RIN2 | input | RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ; it also feeds the always-active ROUT2B output. |+| 6 | RIN3 | input | RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ. |+| 7 | RIN4 | input | RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ. |+| 8 | RIN5 | input | RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ. |+| 9 | DOUT1 | output | RS-232 driver output with an absolute output range of -13.2 V to 13.2 V; it is high impedance when the device is powered off. |+| 10 | DOUT2 | output | RS-232 driver output with an absolute output range of -13.2 V to 13.2 V; it is high impedance when the device is powered off. |+| 11 | DOUT3 | output | RS-232 driver output with an absolute output range of -13.2 V to 13.2 V; it is high impedance when the device is powered off. |+| 12 | DIN3 | input | Driver logic input with a 0 V to 5.5 V input range, VIL maximum of 0.8 V, and VIH minimum of 2 V at VCC = 3.3 V or 2.4 V at VCC = 5 V. |+| 13 | DIN2 | input | Driver logic input with a 0 V to 5.5 V input range, VIL maximum of 0.8 V, and VIH minimum of 2 V at VCC = 3.3 V or 2.4 V at VCC = 5 V. |+| 14 | DIN1 | input | Driver logic input with a 0 V to 5.5 V input range, VIL maximum of 0.8 V, and VIH minimum of 2 V at VCC = 3.3 V or 2.4 V at VCC = 5 V. |+| 15 | ROUT5 | output | Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off. |+| 16 | ROUT4 | output | Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off. |+| 17 | ROUT3 | output | Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off. |+| 18 | ROUT2 | output | Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off. |+| 19 | ROUT1 | output | Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off. |+| 20 | ROUT2B | output | Always-active noninverting output of the RIN2 input that stays enabled while the device is powered down, allowing ring-indicator data transmission. |+| 21 | INVALID | output | Invalid-signal output that is high when any RIN input is a valid RS-232 level (above 2.7 V or below -2.7 V, or within ±0.3 V for less than 30 µs) and low when all RIN inputs are invalid. |+| 22 | FORCEOFF | input | Auto power-down control input with a 0 V to 5.5 V range; driving it low powers off all drivers and receivers except ROUT2B and reduces supply current to 1 µA. |+| 23 | FORCEON | input | Auto power-down control input with a 0 V to 5.5 V range; driving it high overrides automatic power down and keeps the drivers active. |+| 24 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor, with the capacitor value set per the VCC versus capacitor table (Table 9-1). |+| 25 | GND | power_in | Ground reference for the device and the RS-232 serial-port connection. |+| 26 | VCC | power_in | Supply voltage of 3 V to 5.5 V (6 V absolute maximum). |+| 27 | V+ | power_out | Positive charge-pump output voltage; absolute maximum rating of 7 V. |+| 28 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor, with the capacitor value set per the VCC versus capacitor table (Table 9-1). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-28-208mil |+| Category | Interface |+| Pins | 28 |++## CAD (KiCad official)++- Symbol: `TRS3243IDBR`+- Footprint: `Package_SO:SSOP-28_5.3x10.2mm_P0.65mm`+- 3D model: SSOP-28-208mil (KiCad packages3D, STEP)+- 3D model files: `trs3243idbr-etched.step` / `trs3243idbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `trs3243idbr.step` / `trs3243idbr.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/trs3243) (26 pp, sha256 `fe9a6533b614250b`, retrieved 2026-10-08, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/trs3243idbr-datasheet.pdf)
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the V- supply is rated to -7 V absolute maximum and the V+ - V- difference to 13 V."+ },+ {+ "number": "4",+ "name": "RIN1",+ "type": "input",+ "description": "RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ."+ },+ {+ "number": "5",+ "name": "RIN2",+ "type": "input",+ "description": "RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ; it also feeds the always-active ROUT2B output."+ },+ {+ "number": "6",+ "name": "RIN3",+ "type": "input",+ "description": "RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ."+ },+ {+ "number": "7",+ "name": "RIN4",+ "type": "input",+ "description": "RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ."+ },+ {+ "number": "8",+ "name": "RIN5",+ "type": "input",+ "description": "RS-232 receiver input with a recommended input range of -25 V to 25 V and an input resistance of 3 kΩ to 7 kΩ."+ },+ {+ "number": "9",+ "name": "DOUT1",+ "type": "output",+ "description": "RS-232 driver output with an absolute output range of -13.2 V to 13.2 V; it is high impedance when the device is powered off."+ },+ {+ "number": "10",+ "name": "DOUT2",+ "type": "output",+ "description": "RS-232 driver output with an absolute output range of -13.2 V to 13.2 V; it is high impedance when the device is powered off."+ },+ {+ "number": "11",+ "name": "DOUT3",+ "type": "output",+ "description": "RS-232 driver output with an absolute output range of -13.2 V to 13.2 V; it is high impedance when the device is powered off."+ },+ {+ "number": "12",+ "name": "DIN3",+ "type": "input",+ "description": "Driver logic input with a 0 V to 5.5 V input range, VIL maximum of 0.8 V, and VIH minimum of 2 V at VCC = 3.3 V or 2.4 V at VCC = 5 V."+ },+ {+ "number": "13",+ "name": "DIN2",+ "type": "input",+ "description": "Driver logic input with a 0 V to 5.5 V input range, VIL maximum of 0.8 V, and VIH minimum of 2 V at VCC = 3.3 V or 2.4 V at VCC = 5 V."+ },+ {+ "number": "14",+ "name": "DIN1",+ "type": "input",+ "description": "Driver logic input with a 0 V to 5.5 V input range, VIL maximum of 0.8 V, and VIH minimum of 2 V at VCC = 3.3 V or 2.4 V at VCC = 5 V."+ },+ {+ "number": "15",+ "name": "ROUT5",+ "type": "output",+ "description": "Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off."+ },+ {+ "number": "16",+ "name": "ROUT4",+ "type": "output",+ "description": "Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off."+ },+ {+ "number": "17",+ "name": "ROUT3",+ "type": "output",+ "description": "Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off."+ },+ {+ "number": "18",+ "name": "ROUT2",+ "type": "output",+ "description": "Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off."+ },+ {+ "number": "19",+ "name": "ROUT1",+ "type": "output",+ "description": "Receiver logic output that goes high for an open receiver input and is high impedance when the device is powered off."+ },+ {+ "number": "20",+ "name": "ROUT2B",+ "type": "output",+ "description": "Always-active noninverting output of the RIN2 input that stays enabled while the device is powered down, allowing ring-indicator data transmission."+ },+ {+ "number": "21",+ "name": "INVALID",+ "type": "output",+ "description": "Invalid-signal output that is high when any RIN input is a valid RS-232 level (above 2.7 V or below -2.7 V, or within ±0.3 V for less than 30 µs) and low when all RIN inputs are invalid."+ },+ {+ "number": "22",+ "name": "FORCEOFF",+ "type": "input",+ "description": "Auto power-down control input with a 0 V to 5.5 V range; driving it low powers off all drivers and receivers except ROUT2B and reduces supply current to 1 µA."+ },+ {+ "number": "23",+ "name": "FORCEON",+ "type": "input",+ "description": "Auto power-down control input with a 0 V to 5.5 V range; driving it high overrides automatic power down and keeps the drivers active."+ },+ {+ "number": "24",+ "name": "C1-",+ "type": "passive",+ "description": "Negative terminal of the voltage-doubler charge-pump capacitor, with the capacitor value set per the VCC versus capacitor table (Table 9-1)."+ },+ {+ "number": "25",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference for the device and the RS-232 serial-port connection."+ },+ {+ "number": "26",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage of 3 V to 5.5 V (6 V absolute maximum)."+ },+ {+ "number": "27",+ "name": "V+",+ "type": "power_out",+ "description": "Positive charge-pump output voltage; absolute maximum rating of 7 V."+ },+ {+ "number": "28",+ "name": "C1+",+ "type": "passive",+ "description": "Positive terminal of the voltage-doubler charge-pump capacitor, with the capacitor value set per the VCC versus capacitor table (Table 9-1)."+ }+ ],+ "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 1 to 28 assignments and names come from the Pin Configuration figure and Table 5-1, which agree ; The datasheet does not give an electrical type for the charge-pump capacitor terminals (C1+, C1-, C2; The datasheet's pin table for ROUT2B (pin 20) is truncated at 'Always-active noninverting receiver o"+ ],+ "pages_sent": 26,+ "cost_usd": 0.114,+ "at": "2026-10-08T17:06:13"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/trs3243",+ "pages": 26,+ "sha256": "fe9a6533b614250b",+ "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": "trs3243idbr.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": "trs3243idbr-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": "2777aa548ef1e415d4534e2dbadbd983b4ef4920968fa682fe9e731b2005ad24",+ "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]"+ }+}