WS3232ECY from GEC, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	C1+	passive	Positive terminal of the boost charge-pump flying capacitor C1 (0.1 uF typ). Connect C1 between C1+ (pin 1) and C1- (pin 3).
2	V+	power_out	Regulated +5.4V output from the internal boost charge pump. Bypass to GND with a 0.1 uF capacitor.
3	C1-	passive	Negative terminal of the boost charge-pump flying capacitor C1. Pair with C1+ (pin 1).
4	C2+	passive	Positive terminal of the inverting charge-pump flying capacitor C2 (0.1 uF typ). Connect C2 between C2+ (pin 4) and C2- (pin 5).
5	C2-	passive	Negative terminal of the inverting charge-pump flying capacitor C2. Pair with C2+ (pin 4).
6	V-	power_out	Regulated -5.4V output from the internal inverting charge pump. Bypass to GND with a 0.1 uF capacitor.
7	T2OUT	output	RS-232 driver output of channel 2. Swings to approximately ±5V into a 3 kΩ / 1000 pF load; short-circuit current limited to ±60 mA.
8	R2IN	input	RS-232 receiver input of channel 2. Accepts ±20V input swing with 3-7 kΩ (5 kΩ typ) input resistance; thresholds VIL 0.8V / VIH 2.4V with 0.5V hysteresis.
9	R2OUT	output	TTL/CMOS receiver output of channel 2. VOL ≤ 0.4V at 1.6 mA sink; VOH ≥ VCC-0.6V at 1.0 mA source.
10	T2IN	input	TTL/CMOS driver input of channel 2. Thresholds VIL 0.8V / VIH 2.4V with 0.5V hysteresis; input leakage ±1 uA max.
11	T1IN	input	TTL/CMOS driver input of channel 1. Thresholds VIL 0.8V / VIH 2.4V with 0.5V hysteresis; input leakage ±1 uA max.
12	R1OUT	output	TTL/CMOS receiver output of channel 1. VOL ≤ 0.4V at 1.6 mA sink; VOH ≥ VCC-0.6V at 1.0 mA source.
13	R1IN	input	RS-232 receiver input of channel 1. Accepts ±20V input swing with 3-7 kΩ (5 kΩ typ) input resistance; thresholds VIL 0.8V / VIH 2.4V with 0.5V hysteresis.
14	T1OUT	output	RS-232 driver output of channel 1. Swings to approximately ±5V into a 3 kΩ / 1000 pF load; short-circuit current limited to ±60 mA.
15	GND	power_in	Ground reference for the device.
16	VCC	power_in	Positive supply input, +3.0V to +5.25V (recommended). Bypass with a 0.1 uF capacitor to GND close to the pin.

Key specifications

Parameter	Value
Manufacturer	GEC
Package	TSSOP-16
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

WS3232ECY
WS3232ECN
WS3232ECA

CAD (KiCad official)

Symbol: WS3232ECY
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ws3232ecy.step`	205 KB	You want the bare part, or you mark your own boards.
`ws3232ecy-etched.step`	2.5 MB	You want the part with `WS3232ECY` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 610 faces against 255 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: GEC datasheet (10 pp, sha256 f9cb4940c038f66c, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF