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ut3232g-p16-r
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UTC Unisonic Tech RS232 ICs, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownUT3232G-P16-R
UTC Unisonic Tech · RS232 ICs · TSSOP-16
UT3232G-P16-R from UTC Unisonic Tech, 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 voltage-doubler charge-pump capacitor C1. Connect a 0.1µF (typ.) external capacitor between C1+ (pin 1) and C1- (pin 3). |
| 2 | V+ | power_out | +5.5V rail generated internally by the voltage-doubler charge pump. Bypass to GND with a 0.1µF (typ.) capacitor; do not load externally. |
| 3 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor C1. Paired with C1+ (pin 1). |
| 4 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor C2. Connect a 0.1µF (typ.) external capacitor between C2+ (pin 4) and C2- (pin 5). |
| 5 | C2- | passive | Negative terminal of the inverting charge-pump capacitor C2. Paired with C2+ (pin 4). |
| 6 | V- | power_out | -5.5V rail generated internally by the inverting charge pump. Bypass to GND with a 0.1µF (typ.) capacitor; do not load externally. |
| 7 | DOUT2 | output | RS-232 driver 2 output. Drives the RS-232 line to nominally ±5V into a 3kΩ load; short-circuit-current limited (±35 to ±60 mA). |
| 8 | RIN2 | input | RS-232 receiver 2 input. Accepts ±25V RS-232-level signals with internal 5kΩ pull-down to GND; VIT+ ≈ 1.5-2.4V, VIT- ≈ 0.6-1.5V, typical hysteresis 0.3V. |
| 9 | ROUT2 | output | TTL/CMOS receiver 2 output. Drives VCC-referenced logic levels (VOH ≥ VCC-0.6V at -1.0mA, VOL ≤ 0.4V at 1.6mA). |
| 10 | DIN2 | input | TTL/CMOS driver 2 input. Accepts logic levels up to 5.5V even with 3.3V VCC (VIH ≥ 2.0V at VCC=3.3V, VIL ≤ 0.8V). |
| 11 | DIN1 | input | TTL/CMOS driver 1 input. Accepts logic levels up to 5.5V even with 3.3V VCC (VIH ≥ 2.0V at VCC=3.3V, VIL ≤ 0.8V). |
| 12 | ROUT1 | output | TTL/CMOS receiver 1 output. Drives VCC-referenced logic levels (VOH ≥ VCC-0.6V at -1.0mA, VOL ≤ 0.4V at 1.6mA). |
| 13 | RIN1 | input | RS-232 receiver 1 input. Accepts ±25V RS-232-level signals with internal 5kΩ pull-down to GND; VIT+ ≈ 1.5-2.4V, VIT- ≈ 0.6-1.5V, typical hysteresis 0.3V. |
| 14 | DOUT1 | output | RS-232 driver 1 output. Drives the RS-232 line to nominally ±5V into a 3kΩ load; short-circuit-current limited (±35 to ±60 mA). |
| 15 | GND | power_in | Ground reference (0V). All device voltages are referenced to this pin. |
| 16 | VCC | power_in | Primary supply, +3.0V to +5.5V (absolute max +6.0V). Bypass to GND with a CBYPASS ceramic capacitor (typ. 0.1µF). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
Ordering variants
UT3232G-P16-RUT3232G-P16-RG-S16-R
CAD (KiCad official)
- Symbol:
UT3232G-P16-R - 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: UTC Unisonic Tech datasheet (None pp, sha256
1bb2828c39cdcd7d, retrieved 2026-08-17, tier: manufacturer) - 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).