component
MAX232ACSE
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UMW RS232 ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MAX232ACSE
UMW · RS232 ICs · SOP-16
MAX232ACSE from UMW, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | C1+ | passive | Terminal for the positive side of charge-pump capacitor C1, which is 0.1 µF in the typical operating circuit. |
| 2 | V+ | power_out | Positive charge-pump output generating +2 VCC from the 4.5 V to 5.5 V supply, with a 0.1 µF capacitor in the typical circuit. |
| 3 | C1- | passive | Terminal for the negative side of charge-pump capacitor C1. |
| 4 | C2+ | passive | Terminal for the positive side of charge-pump capacitor C2. |
| 5 | C2- | passive | Terminal for the negative side of charge-pump capacitor C2. |
| 6 | V- | power_out | Negative charge-pump output generating -2 VCC for the RS-232 drivers. |
| 7 | T2OUT | output | RS-232 driver 2 output, which swings ±5 V into a 3 kΩ load per the electrical characteristics. |
| 8 | R2IN | input | RS-232 receiver 2 input, which accepts the RS-232 level signal. |
| 9 | R2OUT | output | RS-232 receiver 2 TTL/CMOS output. |
| 10 | T2IN | input | TTL/CMOS driver 2 input that controls the RS-232 driver 2 output. |
| 11 | T1IN | input | TTL/CMOS driver 1 input that controls the RS-232 driver 1 output. |
| 12 | R1OUT | output | RS-232 receiver 1 TTL/CMOS output. |
| 13 | R1IN | input | RS-232 receiver 1 input, which accepts the RS-232 level signal. |
| 14 | T1OUT | output | RS-232 driver 1 output, which swings ±5 V into a 3 kΩ load per the electrical characteristics. |
| 15 | GND | power_in | Ground reference for the device. |
| 16 | VCC | power_in | Supply input, specified from 4.5 V to 5.5 V (5 V typical). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-16 |
| Category | Interface |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage range | VCC | 4.5 | 5.5 | V | 4 | ||
| VCC supply current | ICC | 10 | mA | No load, TA= 25°C | 4 | ||
| Input leakage current | II | -10 | 10 | µA | T_IN=0V to VCC | 4 | |
| Input threshold low | VIL | 0.8 | V | T_IN | 4 | ||
| Input threshold high | VIH | 2 | V | T_IN | 4 | ||
| Output voltage low | VOL | 0.4 | V | R_OUT, IOUT=3.2mA | 4 | ||
| Output voltage high | VOH | 3.5 | V | R_OUT, IOUT=-1mA | 4 | ||
| Input voltage range | VRIN | -30 | 30 | V | 4 | ||
| Input threshold low (receiver) | Vff | 0.8 | V | 4 | |||
| Input threshold high (receiver) | Von | 2.4 | V | 4 | |||
| Input hysteresis | Vh | 0.2 | 1 | V | 4 | ||
| Input resistance | RI | 3 | 7 | kΩ | 4 | ||
| Output resistance | RO | 300 | Ω | 4 | |||
| Output short-circuit current | ISC | -60 | 60 | mA | VCC=V+=V-=0V, VOUT=+2V | 4 | |
| Maximum data rate | ST | 120 | kbps | 5 | |||
| Transition-region slew rate | SR | 3 | 30 | V/µS | 5 | ||
| Supply voltage | VCC | -0.3 | 6 | V | 3 | ||
| Supply voltage (V+) | V+ | 14 | V | Min printed as VCC-0.3 (expression, not numeric) | 3 | ||
| Supply voltage (V-) | V- | -14 | 0.3 | V | 3 | ||
| Transmitter input voltage | VTIN | -0.3 | V | Max printed as VCC+0.3 (expression, not numeric) | 3 | ||
| Receiver input voltage | VRIN | -30 | 30 | V | 3 | ||
| Receiver output voltage | VROUT | -0.3 | V | Max printed as VCC+0.3 (expression, not numeric) | 3 | ||
| Power dissipation (SO package) | PD | 762 | mW | SO package; derate 9.52 mW/°C above 70°C | 3 | ||
| Storage temperature | TSTG | -60 | 150 | °C | 3 | ||
| Operating free-air temperature (AC grade) | TA | 0 | 70 | °C | MAX2_ AC _ / C/D family row | 3 |
CAD (KiCad official)
- Symbol:
MAX232ACSE - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
max232acse-etched.step/max232acse-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max232acse.step/max232acse.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (11 pp, sha256
137c61d3d2b354b8, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# MAX232ACSE
**UMW** · RS232 ICs · SOP-16
MAX232ACSE from UMW, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | C1+ | passive | Terminal for the positive side of charge-pump capacitor C1, which is 0.1 µF in the typical operating circuit. |
| 2 | V+ | power_out | Positive charge-pump output generating +2 VCC from the 4.5 V to 5.5 V supply, with a 0.1 µF capacitor in the typical circuit. |
| 3 | C1- | passive | Terminal for the negative side of charge-pump capacitor C1. |
| 4 | C2+ | passive | Terminal for the positive side of charge-pump capacitor C2. |
| 5 | C2- | passive | Terminal for the negative side of charge-pump capacitor C2. |
| 6 | V- | power_out | Negative charge-pump output generating -2 VCC for the RS-232 drivers. |
| 7 | T2OUT | output | RS-232 driver 2 output, which swings ±5 V into a 3 kΩ load per the electrical characteristics. |
| 8 | R2IN | input | RS-232 receiver 2 input, which accepts the RS-232 level signal. |
| 9 | R2OUT | output | RS-232 receiver 2 TTL/CMOS output. |
| 10 | T2IN | input | TTL/CMOS driver 2 input that controls the RS-232 driver 2 output. |
| 11 | T1IN | input | TTL/CMOS driver 1 input that controls the RS-232 driver 1 output. |
| 12 | R1OUT | output | RS-232 receiver 1 TTL/CMOS output. |
| 13 | R1IN | input | RS-232 receiver 1 input, which accepts the RS-232 level signal. |
| 14 | T1OUT | output | RS-232 driver 1 output, which swings ±5 V into a 3 kΩ load per the electrical characteristics. |
| 15 | GND | power_in | Ground reference for the device. |
| 16 | VCC | power_in | Supply input, specified from 4.5 V to 5.5 V (5 V typical). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-16 |
| Category | Interface |
| Pins | 16 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage range | VCC | 4.5 | | 5.5 | V | | 4 |
| VCC supply current | ICC | | | 10 | mA | No load, TA= 25°C | 4 |
| Input leakage current | II | -10 | | 10 | µA | T_IN=0V to VCC | 4 |
| Input threshold low | VIL | | | 0.8 | V | T_IN | 4 |
| Input threshold high | VIH | 2 | | | V | T_IN | 4 |
| Output voltage low | VOL | | | 0.4 | V | R_OUT, IOUT=3.2mA | 4 |
| Output voltage high | VOH | 3.5 | | | V | R_OUT, IOUT=-1mA | 4 |
| Input voltage range | VRIN | -30 | | 30 | V | | 4 |
| Input threshold low (receiver) | Vff | 0.8 | | | V | | 4 |
| Input threshold high (receiver) | Von | | | 2.4 | V | | 4 |
| Input hysteresis | Vh | 0.2 | | 1 | V | | 4 |
| Input resistance | RI | 3 | | 7 | kΩ | | 4 |
| Output resistance | RO | 300 | | | Ω | | 4 |
| Output short-circuit current | ISC | -60 | | 60 | mA | VCC=V+=V-=0V, VOUT=+2V | 4 |
| Maximum data rate | ST | 120 | | | kbps | | 5 |
| Transition-region slew rate | SR | 3 | | 30 | V/µS | | 5 |
| Supply voltage | VCC | -0.3 | | 6 | V | | 3 |
| Supply voltage (V+) | V+ | | | 14 | V | Min printed as VCC-0.3 (expression, not numeric) | 3 |
| Supply voltage (V-) | V- | -14 | | 0.3 | V | | 3 |
| Transmitter input voltage | VTIN | -0.3 | | | V | Max printed as VCC+0.3 (expression, not numeric) | 3 |
| Receiver input voltage | VRIN | -30 | | 30 | V | | 3 |
| Receiver output voltage | VROUT | -0.3 | | | V | Max printed as VCC+0.3 (expression, not numeric) | 3 |
| Power dissipation (SO package) | PD | | | 762 | mW | SO package; derate 9.52 mW/°C above 70°C | 3 |
| Storage temperature | TSTG | -60 | | 150 | °C | | 3 |
| Operating free-air temperature (AC grade) | TA | 0 | | 70 | °C | MAX2_ _AC_ _ / C/D family row | 3 |
## CAD (KiCad official)
- Symbol: `MAX232ACSE`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files: `max232acse-etched.step` / `max232acse-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max232acse.step` / `max232acse.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757270749772570624) (11 pp, sha256 `137c61d3d2b354b8`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/max232acse-datasheet.pdf)