TRS3227EIDBR

Texas Instruments · RS232 ICs · SSOP-16-208mil

TRS3227EIDBR from Texas Instruments, in a SSOP-16-208mil. 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	READY	output	Output active high when V- ≤ -3.5 V indicating device ready to transmit.
2	C1+	passive	Positive terminal of voltage-doubler charge-pump capacitor, 0.1 μF recommended.
3	V+	power_out	Charge pump positive output (+2 × VCC, -0.3 to 7 V), powers RS-232 drivers.
4	C1−	passive	Negative terminal of voltage-doubler charge-pump capacitor, 0.1 μF recommended.
5	C2+	passive	Positive terminal of inverting charge-pump capacitor, 0.1 μF recommended.
6	C2−	passive	Negative terminal of inverting charge-pump capacitor, 0.1 μF recommended.
7	V−	power_out	Charge pump negative output (-2 × VCC, -7 to 0.3 V), powers RS-232 drivers.
8	RIN	input	RS-232 receiver input (-25 to 25 V) with ±15 kV IEC ESD protection.
9	ROUT	output	CMOS receiver output (VOH = VCC - 0.6 V, VOL = 0.4 V, 150 ns propagation delay).
10	INVALID	output	Valid signal detector output, active low for indeterminate input (±0.3 V threshold, 0.5 V hysteresis).
11	DIN	input	CMOS driver input (VIH ≥ 2 V, VIL ≤ 0.8 V at 3.3 V), tri-state when FORCEOFF low.
12	FORCEON	input	Force-on input, active high to override powerdown (requires FORCEOFF high).
13	DOUT	output	RS-232 driver output (±5.4 V, 1 Mbit/s) with ±15 kV ESD protection, tri-state when FORCEOFF low.
14	GND	power_in	Ground reference with ±15 kV IEC ESD protection to all I/O pins.
15	VCC	power_in	Supply input (3-5.5 V, 2 mA max quiescent, 1 μA with auto-powerdown enabled).
16	FORCEOFF	input	Force-off input, active low to disable drivers, receivers, and charge pump.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SSOP-16-208mil
Category	Interface
Pins	16

CAD (KiCad official)

Symbol: TRS3227EIDBR
Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
3D model: SSOP-16-208mil (KiCad packages3D, STEP)
3D model files: trs3227eidbr-etched.step / trs3227eidbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); trs3227eidbr.step / trs3227eidbr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (18 pp, sha256 7db13a083d90c1a4, retrieved 2026-10-01, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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

# TRS3227EIDBR

**Texas Instruments** · RS232 ICs · SSOP-16-208mil

TRS3227EIDBR from Texas Instruments, in a SSOP-16-208mil. 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 | READY | output | Output active high when V- ≤ -3.5 V indicating device ready to transmit. |
| 2 | C1+ | passive | Positive terminal of voltage-doubler charge-pump capacitor, 0.1 μF recommended. |
| 3 | V+ | power_out | Charge pump positive output (+2 × VCC, -0.3 to 7 V), powers RS-232 drivers. |
| 4 | C1− | passive | Negative terminal of voltage-doubler charge-pump capacitor, 0.1 μF recommended. |
| 5 | C2+ | passive | Positive terminal of inverting charge-pump capacitor, 0.1 μF recommended. |
| 6 | C2− | passive | Negative terminal of inverting charge-pump capacitor, 0.1 μF recommended. |
| 7 | V− | power_out | Charge pump negative output (-2 × VCC, -7 to 0.3 V), powers RS-232 drivers. |
| 8 | RIN | input | RS-232 receiver input (-25 to 25 V) with ±15 kV IEC ESD protection. |
| 9 | ROUT | output | CMOS receiver output (VOH = VCC - 0.6 V, VOL = 0.4 V, 150 ns propagation delay). |
| 10 | INVALID | output | Valid signal detector output, active low for indeterminate input (±0.3 V threshold, 0.5 V hysteresis). |
| 11 | DIN | input | CMOS driver input (VIH ≥ 2 V, VIL ≤ 0.8 V at 3.3 V), tri-state when FORCEOFF low. |
| 12 | FORCEON | input | Force-on input, active high to override powerdown (requires FORCEOFF high). |
| 13 | DOUT | output | RS-232 driver output (±5.4 V, 1 Mbit/s) with ±15 kV ESD protection, tri-state when FORCEOFF low. |
| 14 | GND | power_in | Ground reference with ±15 kV IEC ESD protection to all I/O pins. |
| 15 | VCC | power_in | Supply input (3-5.5 V, 2 mA max quiescent, 1 μA with auto-powerdown enabled). |
| 16 | FORCEOFF | input | Force-off input, active low to disable drivers, receivers, and charge pump. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Interface |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `TRS3227EIDBR`
- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`
- 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files: `trs3227eidbr-etched.step` / `trs3227eidbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `trs3227eidbr.step` / `trs3227eidbr.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/trs3227e) (18 pp, sha256 `7db13a083d90c1a4`, retrieved 2026-10-01, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/trs3227eidbr-datasheet.pdf)