component
MAX232CSE
Public Made by Adomby adom
UMW RS232 ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMAX232CSE
UMW · RS232 ICs · SOP-16
MAX232CSE 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 | Positive terminal of the first charge-pump capacitor (C1), connected between C1+ and C1-. |
| 2 | V+ | power_out | Positive charge-pump output, generated at about +2 VCC for the RS-232 driver supply. |
| 3 | C1- | passive | Negative terminal of the first charge-pump capacitor (C1), connected between C1+ and C1-. |
| 4 | C2+ | passive | Positive terminal of the second charge-pump capacitor (C2), connected between C2+ and C2-. |
| 5 | C2- | passive | Negative terminal of the second charge-pump capacitor (C2), connected between C2+ and C2-. |
| 6 | V- | power_out | Negative charge-pump output, generated at about -2 VCC for the RS-232 driver supply. |
| 7 | T2OUT | output | RS-232 driver 2 output, which drives the RS-232 line; the absolute maximum transmitter output voltage is listed as V- to V+ in the ratings table. |
| 8 | R2IN | input | RS-232 receiver 2 input, accepting RS-232 levels with the receiver input voltage range of ±30 V in the ratings table. |
| 9 | R2OUT | output | RS-232 receiver 2 output, providing TTL/CMOS logic levels to the controller. |
| 10 | T2IN | input | TTL/CMOS input to RS-232 driver 2, which is referenced to VCC and sets the T2OUT state. |
| 11 | T1IN | input | TTL/CMOS input to RS-232 driver 1, which is referenced to VCC and sets the T1OUT state. |
| 12 | R1OUT | output | RS-232 receiver 1 output, providing TTL/CMOS logic levels to the controller. |
| 13 | R1IN | input | RS-232 receiver 1 input, accepting RS-232 levels with the receiver input voltage range of ±30 V in the ratings table. |
| 14 | T1OUT | output | RS-232 driver 1 output, which drives the RS-232 line; the absolute maximum transmitter output voltage is listed as V- to V+ in the ratings table. |
| 15 | GND | power_in | Ground reference for the device. |
| 16 | VCC | power_in | Supply voltage input, 4.5 V to 5.5 V (5 V nominal). |
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 | ||
| 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 (logic) | VIL | 0.8 | V | 4 | |||
| Input threshold high (logic) | VIH | 2 | V | 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 | ||
| Receiver input voltage range | VRIN | -30 | 30 | V | 4 | ||
| Receiver input threshold low | Vff | 0.8 | V | TA=+25°C, VCC=5V | 4 | ||
| Receiver input threshold high | Von | 2.4 | V | TA=+25°C, VCC=5V | 4 | ||
| Receiver input hysteresis | Vh | 1 | V | TA=+25°C, VCC=5V | 4 | ||
| Receiver input resistance | RI | 3 | 7 | kΩ | 4 | ||
| Transmitter output resistance | RO | 300 | Ω | VCC=V+=V-=0V, VOUT=+2V | 4 | ||
| Transmitter output short-circuit current | ISC | -60 | 60 | mA | 4 | ||
| Transmitter output voltage swing | ΔVO | -5 | 5 | V | All driver inputs loaded with 3kΩ to ground | 4 | |
| Maximum data rate | 120 | kbps | RL=3kΩ to 7kΩ, CL=50pF to 1000pF, all parts, normal operation (Fig. 1) | 5 | |||
| Transition-region slew rate | SR | 3 | 30 | V/µs | RL=3kΩ to 7kΩ, CL=50pF to 2500pF, measured from -3V to +3V or +3V to -3V (Fig.3) | 5 | |
| Supply voltage (absolute maximum) | VCC | -0.3 | 6 | V | 3 | ||
| V+ output (absolute maximum) | V+ | 14 | V | 3 | |||
| V- output (absolute maximum) | V- | -14 | 0.3 | V | 3 | ||
| Transmitter input voltage (absolute maximum) | VTIN | -0.3 | V | 3 | |||
| Receiver input voltage (absolute maximum) | VRIN | -30 | 30 | V | 3 | ||
| Receiver output voltage (absolute maximum) | VROUT | -0.3 | V | 3 | |||
| Power dissipation | PD | 762 | mW | SO package, derate 9.52 mW/°C above 70°C | 3 | ||
| Storage temperature | TSTG | -60 | 150 | °C | 3 | ||
| Operating temperature (C grade) | 0 | 70 | °C | MAX2_ AC , MAX2 _C/D | 3 |
CAD (KiCad official)
- Symbol:
MAX232CSE - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
max232cse-etched.step/max232cse-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max232cse.step/max232cse.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).