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MAX232ESE

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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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MAX232ESE

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max232ese.step / max232ese.glb are 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, 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