SP3232EEA-L from MaxLinear, in a SSOP-16-208mil. 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 voltage doubler charge-pump capacitor (typ 0.1µF at Vcc=3.3V).
2	V+	power_out	+5.5V generated by the internal charge pump. Bypass with a 0.1µF capacitor to GND (or Vcc).
3	C1-	passive	Negative terminal of the voltage doubler charge-pump capacitor (typ 0.1µF at Vcc=3.3V).
4	C2+	passive	Positive terminal of the inverting charge-pump capacitor (typ 0.1µF at Vcc=3.3V).
5	C2-	passive	Negative terminal of the inverting charge-pump capacitor (typ 0.1µF at Vcc=3.3V).
6	V-	power_out	-5.5V generated by the internal charge pump. Bypass with a 0.1µF capacitor to GND. V+ and V- absolute difference must not exceed 13V.
7	T2OUT	output	RS-232 driver #2 output. ±5V typical swing into a 3kΩ load; short-circuit current limited to ±60mA typ.
8	R2IN	input	RS-232 receiver #2 input. ±15V input range, ~5kΩ input resistance, 0.3V typical hysteresis.
9	R2OUT	output	TTL/CMOS receiver #2 output. VOL ≤ 0.4V at 1.6mA, VOH ≥ Vcc-0.6V at -1.0mA.
10	T2IN	input	TTL/CMOS driver #2 input. Logic-LOW threshold 0.8V; logic-HIGH threshold 2.0V @Vcc=3.3V (2.4V @Vcc=5V). Absolute max -0.3V to +6.0V.
11	T1IN	input	TTL/CMOS driver #1 input. Logic-LOW threshold 0.8V; logic-HIGH threshold 2.0V @Vcc=3.3V (2.4V @Vcc=5V). Absolute max -0.3V to +6.0V.
12	R1OUT	output	TTL/CMOS receiver #1 output. VOL ≤ 0.4V at 1.6mA, VOH ≥ Vcc-0.6V at -1.0mA.
13	R1IN	input	RS-232 receiver #1 input. ±15V input range, ~5kΩ input resistance, 0.3V typical hysteresis.
14	T1OUT	output	RS-232 driver #1 output. ±5V typical swing into a 3kΩ load; short-circuit current limited to ±60mA typ.
15	GND	power_in	Device ground reference.
16	VCC	power_in	+3.0V to +5.5V supply voltage. Absolute max -0.3V to +6.0V. Bypass with a 0.1µF capacitor to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SP3232ECA
SP3232ECA/TR
SP3232EEA-L
SP3232EEA/TR
SP3232EEA-L/TR
SP3232ECP
SP3232EEP
SP3232ECT
SP3232ECT/TR
SP3232EET
SP3232EET/TR
SP3232ECN
SP3232ECN/TR
SP3232EEN
SP3232EEN/TR
SP3232ECY
SP3232ECY/TR
SP3232EEY
SP3232EEY/TR

CAD (KiCad official)

Symbol: SP3232EEA-L
Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
3D model: SSOP-16-208mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sp3232eea-l.step`	217 KB	You want the bare part, or you mark your own boards.
`sp3232eea-l-etched.step`	2.6 MB	You want the part with `SP3232EEA-L` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 648 faces against 267 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: MaxLinear datasheet (20 pp, sha256 7d235e413bb3e6e8, 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