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MAX232ESE
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
markdownMAX232ESE
UMW · RS232 ICs · SOP-16
MAX232ESE 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 charge-pump capacitor C1, which is connected externally (0.1 µF in the typical operating circuit). |
| 2 | V+ | power_out | +2 VCC supply generated by the internal charge pump, which the datasheet gives a maximum of 14 V for in the absolute maximum ratings. |
| 3 | C1- | passive | Negative terminal of the charge-pump capacitor C1, which is connected externally (0.1 µF in the typical operating circuit). |
| 4 | C2+ | passive | Positive terminal of the charge-pump capacitor C2, which is connected externally (0.1 µF in the typical operating circuit). |
| 5 | C2- | passive | Negative terminal of the charge-pump capacitor C2, which is connected externally (0.1 µF in the typical operating circuit). |
| 6 | V- | power_out | -2 VCC supply generated by the internal charge pump, which the datasheet gives a minimum of -14 V for in the absolute maximum ratings. |
| 7 | T2OUT | output | RS-232 driver output channel 2, with output voltage swing of ±5 V into a 3 kΩ load to ground. |
| 8 | R2IN | input | RS-232 receiver input channel 2, with an input voltage range of ±30 V and a typical input resistance of 5 kΩ to 7 kΩ. |
| 9 | R2OUT | output | RS-232 receiver output channel 2, a TTL/CMOS output driven from the RS-232 input. |
| 10 | T2IN | input | RS-232 driver TTL/CMOS input channel 2, which accepts logic levels from 0 V to VCC. |
| 11 | T1IN | input | RS-232 driver TTL/CMOS input channel 1, which accepts logic levels from 0 V to VCC. |
| 12 | R1OUT | output | RS-232 receiver output channel 1, a TTL/CMOS output driven from the RS-232 input. |
| 13 | R1IN | input | RS-232 receiver input channel 1, with an input voltage range of ±30 V and a typical input resistance of 5 kΩ to 7 kΩ. |
| 14 | T1OUT | output | RS-232 driver output channel 1, with output voltage swing of ±5 V into a 3 kΩ load to ground. |
| 15 | GND | power_in | Ground reference for the device. |
| 16 | VCC | power_in | Supply voltage input, 4.5 V to 5.5 V. |
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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 6 | V | 3 | ||
| Transmitter high output voltage | V+ | 14 | V | 3 | |||
| Transmitter low output voltage | V- | -14 | 0.3 | V | 3 | ||
| Transmitter input voltage | VTIN | -0.3 | V | 3 | |||
| Receiver input voltage | VRIN | -30 | 30 | V | 3 | ||
| Output voltages (receivers) | VROUT | -0.3 | V | 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 voltage range (temperature, symbol TA) | TA | -40 | 105 | °C | 3 | ||
| VCC 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 (receiver) | VRIN | -30 | 30 | V | All parts, normal operation | 4 | |
| Input Threshold Low (receiver) | Vff | 0.8 | V | TA=+25°C, VCC=5V | 4 | ||
| Input Threshold High (receiver) | Von | 2.4 | V | TA=+25°C, VCC=5V | 4 | ||
| Input Hysteresis | Vh | 0.2 | 1 | V | VCC=5V | 4 | |
| Input Resistance | RI | 3 | 7 | kΩ | TA=+25°C, VCC=5V | 4 | |
| Output resistance | RO | 300 | Ω | 4 | |||
| Output Short-Circuit Current | ISC | -60 | 60 | mA | VCC=V+=V-=0V, VOUT=+2V | 4 | |
| Output Voltage Swing ±5 V | ΔVO | -5 | 5 | V | All driver inputs loaded with 3kΩ to ground | 4 | |
| Maximum Data Rate | ST | 120 | kbps | RL=3kΩ to 7 kΩ, CL=50pF to 1000pF, one transmitter switching | 5 | ||
| Transition-Region Slew Rate | SR | 3 | 30 | V/µS | CL=150pF | 5 |
CAD (KiCad official)
- Symbol:
MAX232ESE - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
max232ese-etched.step/max232ese-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max232ese.step/max232ese.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (10 pp, sha256
133db0657c3564df, retrieved 2026-10-17, 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).