XL232Z from XINLUDA, in a SOP-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 lead of the C1 flying capacitor for the +5V-to-+10V charge-pump voltage doubler. Connect a 1µF/16V capacitor between C1+ and C1-.
2	V+	power_out	Positive charge-pump output (~+10V) for the storage capacitor only. Bypass to GND with a 1µF/16V capacitor (C3). Do not use to power external circuitry beyond mA-level loads.
3	C1-	passive	Negative lead of the C1 flying capacitor for the +5V-to-+10V charge-pump voltage doubler.
4	C2+	passive	Positive lead of the C2 flying capacitor for the +10V-to-−10V charge-pump voltage inverter. Connect a 1µF/16V capacitor between C2+ and C2-.
5	C2-	passive	Negative lead of the C2 flying capacitor for the +10V-to-−10V charge-pump voltage inverter.
6	V-	power_out	Negative charge-pump output (~−10V) for the storage capacitor only. Bypass to GND with a 1µF/16V capacitor (C4). Not regulated; do not load beyond mA-level.
7	T2OUT	output	RS-232 line data output of driver 2, sent to the remote RS-232 system. Typical swing ±8V into a 5kΩ receiver, guaranteed ±5V minimum into 3kΩ at VCC=+4.5V.
8	R2IN	input	RS-232 line data input of receiver 2, driven by the remote RS-232 system. Withstands ±25V input; internal 5kΩ (typ) input termination resistor to GND.
9	R2OUT	output	TTL/CMOS logic data output of receiver 2, driven to the local UART. VOH ≥ 3.5V at IOUT=−1mA; VOL ≤ 0.4V at IOUT=1.6mA.
10	T2IN	input	TTL/CMOS logic data input of driver 2 from the local UART. Internal 400kΩ pull-up to VCC; may be left unconnected on unused drivers.
11	T1IN	input	TTL/CMOS logic data input of driver 1 from the local UART. Internal 400kΩ pull-up to VCC; may be left unconnected on unused drivers.
12	R1OUT	output	TTL/CMOS logic data output of receiver 1, driven to the local UART. VOH ≥ 3.5V at IOUT=−1mA; VOL ≤ 0.4V at IOUT=1.6mA.
13	R1IN	input	RS-232 line data input of receiver 1, driven by the remote RS-232 system. Withstands ±25V input; internal 5kΩ (typ) input termination resistor to GND.
14	T1OUT	output	RS-232 line data output of driver 1, sent to the remote RS-232 system. Typical swing ±8V into a 5kΩ receiver, guaranteed ±5V minimum into 3kΩ at VCC=+4.5V.
15	GND	power_in	Device ground / 0V reference.
16	VCC	power_in	Supply voltage input; connect to external +5V (+5V ±5% operating; absolute maximum +6V). Decouple to GND with a capacitor equal to C1/C2 (1µF) placed as close to the device as possible.

Key specifications

Parameter	Value
Manufacturer	XINLUDA
Package	SOP-16
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

XL232Z
XL232-TS
XL232K
XL232ZXD232

CAD (KiCad official)

Symbol: XL232Z
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOP-16 (KiCad packages3D, STEP)

Provenance

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

Datasheet: XINLUDA datasheet (11 pp, sha256 3bd61626045185e9, 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