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3D Model

Contents

Pinout
Key specifications
Ordering variants
CAD (KiCad official)
Provenance

README

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HT3232EARZ

HTCSEMI · RS232 ICs · SOP-16

HT3232EARZ from HTCSEMI, 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 terminal for the first charge-pump flying capacitor (C1). Connect a 0.1µF (up to 1.0µF) ceramic capacitor between C1+ (pin 1) and C1- (pin 3) to enable the voltage-doubling charge pump.
2	V+	power_out	Doubled (positive) charge-pump output voltage, roughly +2·VCC. Bypass to GND with a 0.1µF (up to 1.0µF) reservoir capacitor (C3). Absolute maximum (VCC-0.3)V to +7V;
3	C1-	passive	Negative terminal for the first charge-pump flying capacitor (C1). Pairs with C1+ (pin 1) via a 0.1µF (up to 1.0µF) ceramic capacitor.
4	C2+	passive	Positive terminal for the second charge-pump flying capacitor (C2). Connect a 0.1µF (up to 1.0µF) ceramic capacitor between C2+ (pin 4) and C2- (pin 5) for the inverting charge pump that generates V-.
5	C2-	passive	Negative terminal for the second charge-pump flying capacitor (C2). Pairs with C2+ (pin 4) via a 0.1µF (up to 1.0µF) ceramic capacitor.
6	V-	power_out	Inverted (negative) charge-pump output voltage, roughly -2·VCC. Bypass to GND with a 0.1µF (up to 1.0µF) reservoir capacitor (C4). Absolute maximum +0.3V to -7V;
7	T2OUT	output	Second RS-232 transmitter output. Drives ±5V (typ ±5.4V at VCC=5V, ±4.0V at VCC=3.3V) into a 3kΩ load. Short-circuit current limited to ±60mA; withstands ±15kV IEC61000-4-2 air discharge.
8	R2IN	input	Second RS-232 receiver input. Operating range ±25V, input resistance 3-7kΩ (typ 5kΩ), thresholds VRIL 0.6-1.5V / VRIH up to 2.4V with ~0.3V hysteresis. Withstands ±15kV IEC61000-4-2 air discharge.
9	R2OUT	output	Second receiver TTL/CMOS output. VROL ≤ 0.4V at IOUT=1.6mA (VCC=3.3V); VROH ≥ VCC-0.6V at IOUT=-0.5mA (VCC=3.3V). Logic inversion of R2IN.
10	T2IN	input	Second transmitter TTL/CMOS logic input. VTIL ≤ 0.8V, VTIH ≥ 2V (VCC=3.3V) / 2.4V (VCC=5V), ~250mV hysteresis, ±1µA leakage. Drives T2OUT with logic inversion.
11	T1IN	input	First transmitter TTL/CMOS logic input. VTIL ≤ 0.8V, VTIH ≥ 2V (VCC=3.3V) / 2.4V (VCC=5V), ~250mV hysteresis, ±1µA leakage. Drives T1OUT with logic inversion.
12	R1OUT	output	First receiver TTL/CMOS output. VROL ≤ 0.4V at IOUT=1.6mA (VCC=3.3V); VROH ≥ VCC-0.6V at IOUT=-0.5mA (VCC=3.3V). Logic inversion of R1IN.
13	R1IN	input	First RS-232 receiver input. Operating range ±25V, input resistance 3-7kΩ (typ 5kΩ), thresholds VRIL 0.6-1.5V / VRIH up to 2.4V with ~0.3V hysteresis. Withstands ±15kV IEC61000-4-2 air discharge.
14	T1OUT	output	First RS-232 transmitter output. Drives ±5V (typ ±5.4V at VCC=5V, ±4.0V at VCC=3.3V) into a 3kΩ load. Short-circuit current limited to ±60mA; withstands ±15kV IEC61000-4-2 air discharge.
15	GND	power_in	Ground / 0V reference for both logic and RS-232 sides.
16	VCC	power_in	Positive supply voltage, 3.0V to 5.5V operating (absolute max -0.3V to +6V). Bypass to GND with 0.1µF (up to 1.0µF). Quiescent supply current ~2.5mA typ at 3.3V, ~6mA typ at 5V (no load).

Key specifications

Parameter	Value
Manufacturer	HTCSEMI
Package	SOP-16
Category	Comm/UART
Pins	16

Ordering variants

HT3232EARZ
HT3232EARZHT3232EANZ
HT3232EARZHT3232EARWZ
HT3232EARZHT3232EARTZ
HT3232EARZHT3232EARSZ
HT3232EARZHT3232EARQZ

CAD (KiCad official)

Symbol: HT3232EARZ
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: HTCSEMI datasheet (None pp, sha256 04c6f3bbd3f4c678, 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

Symbol & Footprint

Schematic Symbol

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