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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.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 (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