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Pinout
Key specifications
Ordering variants
CAD (KiCad official)
Provenance

README

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HD3232ECN

Broadic · RS232 ICs · SOP-16

HD3232ECN from Broadic, 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 of the voltage-doubler charge-pump flying capacitor C1 (typ. 0.1 µF). Connects to C1- through the external capacitor to double VCC to VP (+5.4 V).
2	V+	power_out	Charge-pump output; nominally +5.4 V regulated positive supply generated by the internal doubler. Bypass to GND with a 0.1 µF capacitor.
3	C1-	passive	Negative terminal of the voltage-doubler charge-pump flying capacitor C1 (typ. 0.1 µF).
4	C2+	passive	Positive terminal of the inverting charge-pump flying capacitor C2 (typ. 0.1 µF). C2 develops the negative rail VN (−5.4 V) from VP.
5	C2-	passive	Negative terminal of the inverting charge-pump flying capacitor C2 (typ. 0.1 µF).
6	V-	power_out	Charge-pump output; nominally −5.4 V regulated negative supply generated by the internal inverter. Bypass to GND with a 0.1 µF capacitor.
7	T2OUT	output	Second RS-232 driver output. Level-shifted transceiver output (±5 V typ., ±15 V abs max) with 300 Ω typical output impedance and 6-30 V/µs slew rate. Guaranteed 250 kbps into RL = 3 kΩ / CL = 1000 pF.
8	R2IN	input	Second RS-232 receiver input. Accepts ±20 V RS-232 line signals with 3-7 kΩ input resistance, 0.6-2.4 V thresholds and ~0.5 V hysteresis. ±15 kV HBM / ±8 kV IEC 61000-4-2 contact ESD-protected.
9	R2OUT	output	Second TTL/CMOS receiver output. Drives VCC−0.6 V high (IOH = −1 mA) / 0.4 V low (IOL = 1.6 mA). Always active on the HD3232E (no XEN/XSD enable).
10	T2IN	input	Second TTL/CMOS driver input. VIL ≤ 0.8 V, VIH ≥ 2.0 V (3.3 V) / ≥ 2.4 V (5 V), ~0.5 V hysteresis, input leakage ≤ ±1 µA. Drives T2OUT after RS-232 level translation.
11	T1IN	input	First TTL/CMOS driver input. VIL ≤ 0.8 V, VIH ≥ 2.0 V (3.3 V) / ≥ 2.4 V (5 V), ~0.5 V hysteresis, input leakage ≤ ±1 µA. Drives T1OUT after RS-232 level translation.
12	R1OUT	output	First TTL/CMOS receiver output. Drives VCC−0.6 V high (IOH = −1 mA) / 0.4 V low (IOL = 1.6 mA). Always active on the HD3232E (no XEN/XSD enable).
13	R1IN	input	First RS-232 receiver input. Accepts ±20 V RS-232 line signals with 3-7 kΩ input resistance, 0.6-2.4 V thresholds and ~0.5 V hysteresis. ±15 kV HBM / ±8 kV IEC 61000-4-2 contact ESD-protected.
14	T1OUT	output	First RS-232 driver output. Level-shifted transceiver output (±5 V typ., ±15 V abs max) with 300 Ω typical output impedance and 6-30 V/µs slew rate. Guaranteed 250 kbps into RL = 3 kΩ / CL = 1000 pF.
15	GND	power_in	Device ground reference for both the logic side and the charge-pump return.
16	VCC	power_in	Positive logic supply, +3.0 V to +5.5 V (abs max +6.0 V). Typical operating current 0.5 mA (max 1 mA) with RS-232 inputs floating. Bypass to GND with 0.1 µF close to the pin.

Key specifications

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

Ordering variants

HD3232ECN
HD3232ECNHD3232ECA
HD3232ECNHD3232ECT
HD3232ECNHD3232ECY

CAD (KiCad official)

Symbol: HD3232ECN
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: Broadic datasheet (None pp, sha256 76f85e28578e3f73, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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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