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sp3232eimt

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by Ray

HGSEMI RS232 ICs, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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SP3232EIMT

HGSEMI · RS232 ICs · TSSOP-16

SP3232EIMT from HGSEMI, 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 first charge-pump flying capacitor (C1). Connects to the C1- pin through a 0.1 µF ceramic capacitor used by the internal voltage doubler.
2 V+ power_out Doubled voltage output terminal (approximately +2·VCC) generated by the internal charge pump. Requires an external 0.1 µF reservoir capacitor to GND; maximum magnitude +7 V with
3 C1- passive Negative terminal of the first charge-pump flying capacitor (C1). Pairs with C1+ through a 0.1 µF capacitor for the voltage-doubler stage.
4 C2+ passive Positive terminal of the second charge-pump flying capacitor (C2). Connects to C2- through a 0.1 µF capacitor used by the inverting charge pump that generates V-.
5 C2- passive Negative terminal of the second charge-pump flying capacitor (C2). Pairs with C2+ through a 0.1 µF capacitor for the inverter stage.
6 V- power_out Inverted voltage output terminal (approximately -2·VCC) generated by the internal charge pump. Requires an external 0.1 µF reservoir capacitor to GND; magnitude limited to 7 V with
7 T2OUT output Second transmitter RS-232 output. Drives the line to ±5 V typ. (VCC = 5 V) or ±3.5 V min. (VCC = 3.3 V) into a 3 kΩ load; output short-circuit current limited to ±60 mA and voltage range ±13.2 V.
8 R2IN input Second receiver RS-232 input. Accepts ±25 V input range with 3-7 kΩ input resistance (5 kΩ typ.); thresholds VRIL 0.6-1.2 V and VRIH up to 2.4 V with ~0.3 V hysteresis.
9 R2OUT output Second receiver TTL/CMOS output. Drives logic-level output to the host UART; VOL ≤ 0.4 V at 1.6 mA (VCC = 3.3 V) and VOH ≥ VCC-0.6 V at -0.5 mA.
10 T2IN input Second transmitter TTL/CMOS input from the host UART. Logic threshold VIL ≤ 0.8 V and VIH ≥ 2.0 V (VCC = 3.3 V) / 2.4 V (VCC = 5 V) with ~250 mV hysteresis; leakage ±1 µA max.
11 T1IN input First transmitter TTL/CMOS input from the host UART. Logic threshold VIL ≤ 0.8 V and VIH ≥ 2.0 V (VCC = 3.3 V) / 2.4 V (VCC = 5 V) with ~250 mV hysteresis; leakage ±1 µA max.
12 R1OUT output First receiver TTL/CMOS output. Drives logic-level output to the host UART; VOL ≤ 0.4 V at 1.6 mA (VCC = 3.3 V) and VOH ≥ VCC-0.6 V at -0.5 mA.
13 R1IN input First receiver RS-232 input. Accepts ±25 V input range with 3-7 kΩ input resistance (5 kΩ typ.); thresholds VRIL 0.6-1.2 V and VRIH up to 2.4 V with ~0.3 V hysteresis.
14 T1OUT output First transmitter RS-232 output. Drives the line to ±5 V typ. (VCC = 5 V) or ±3.5 V min. (VCC = 3.3 V) into a 3 kΩ load; output short-circuit current limited to ±60 mA and voltage range ±13.2 V.
15 GND power_in Device ground reference for all internal circuitry and the return path for the charge-pump reservoir capacitors and bypass capacitor.
16 VCC power_in Positive supply voltage input, +3.0 V to +5.5 V operating range (absolute max -0.3 V to +6 V). Requires a 0.1 µF bypass capacitor to GND; typical supply current 2.5 mA at 3.3 V and 6 mA at 5 V.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TSSOP-16
Category Comm/UART
Pins 16

Ordering variants

  • SP3232EIMTSP3232ECMT/TR
  • SP3232EIMT/TR
  • SP3232EIMTSP3232ECM/TR
  • SP3232EIMTSP3232EIM/TR
  • SP3232EIMTSP3232ECN
  • SP3232EIMTSP3232EIN

CAD (KiCad official)

  • Symbol: SP3232EIMT
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (None pp, sha256 78c3ba6cd9f3020e, 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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