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MAX3232CSE

Public Made by Adom

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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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MAX3232CSE

UMW · RS232 ICs · SOP-16

MAX3232CSE 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 voltage-doubler charge-pump capacitor; external capacitor value per Table 1 (0.047 µF to 0.22 µF depending on VCC).
2 V+ power_out Positive charge-pump output generating +5.5 V, with an absolute maximum of +7.0 V and a bypass capacitor CBYPASS per Table 1.
3 C1- passive Negative terminal of the voltage-doubler charge-pump capacitor, connected to the external C1 capacitor.
4 C2+ passive Positive terminal of the inverting charge-pump capacitor; C2 to C4 values per Table 1 (0.1 µF to 1 µF depending on VCC).
5 C2- passive Negative terminal of the inverting charge-pump capacitor, connected to the external C2 capacitor.
6 V- power_out Negative charge-pump output generating -5.5 V, with an absolute maximum of -7.0 V.
7 DOUT2 output RS-232 driver output 2; swings about ±5.0 V typical (±5.4 V max) into a 3 kΩ load and absolute output voltage is limited to ±13.2 V.
8 RIN2 input RS-232 receiver input 2; receiver input voltage range is ±25 V.
9 ROUT2 output TTL/CMOS receiver output 2; high level is VCC-0.6 V minimum at IOH = -1.0 mA and low level is 0.4 V maximum at IOL = 1.6 mA.
10 DIN2 input TTL/CMOS driver input 2; low-level input is 0.8 V maximum, high-level input is 2.4 V minimum at VCC=5 V, and input voltage up to 5.5 V is allowed.
11 DIN1 input TTL/CMOS driver input 1; low-level input is 0.8 V maximum, high-level input is 2.4 V minimum at VCC=5 V, and input voltage up to 5.5 V is allowed.
12 ROUT1 output TTL/CMOS receiver output 1; high level is VCC-0.6 V minimum at IOH = -1.0 mA and low level is 0.4 V maximum at IOL = 1.6 mA.
13 RIN1 input RS-232 receiver input 1; receiver input voltage range is ±25 V.
14 DOUT1 output RS-232 driver output 1; swings about ±5.0 V typical (±5.4 V max) into a 3 kΩ load and absolute output voltage is limited to ±13.2 V.
15 GND power_in Ground reference for the device; all voltages are referenced to network GND.
16 VCC power_in Supply voltage input, 3.0 V to 5.5 V, with an absolute maximum of 6.0 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 Current ICC 0.3 1 mA No load 5
Driver High-Level Output Voltage VOH 5 5.4 V DOUT at RL=3kΩ to GND, DIN=GND 5
Driver Low-Level Output Voltage VOL -5 -5.4 V DOUT at RL=3kΩ to GND, DIN=VCC 5
High-Level Input Current IIH -1 0.01 1 μA VI=VCC 5
Low-Level Input Current IIL -1 0.01 1 μA VI at GND 5
Short-Circuit Output Current IOS -60 35 60 mA VCC=3.6V, VOUT=0V 5
Output Resistance rO 300 Ω VCC, V+ and V- =0V, VOUT=±2.0V 5
Output Resistance rO 10 MΩ VCC, V+ and V- =0V, VOUT=±2.0V 5
Receiver Low-Level Output Voltage VOL 0.4 V IOL=1.6mA 5
Positive-Going Input Threshold Voltage VIT+ 2.4 V VCC=3.3V 5
Input Resistance RI 3 5 7 kΩ VI=±3.0V~±25V 5
Maximum Data Rate 120 250 Kbit/s 6
Slew Rate, Transition Region SR(tr) 35 V/μs CL=220pF~1000pF 6
Supply Voltage (VCC=3.3V) VCC 3 3.3 3.6 V VCC=3.3V 4
Supply Voltage (VCC=5V) VCC 4.5 5 5.5 V VCC=5V 4
Driver and Control High-Level Input Voltage VIH 2 V VCC=3.3V, DIN 4
Driver and Control High-Level Input Voltage VIH 2.4 V VCC=5V, DIN 4
Driver and Control Low-Level Input Voltage VIL 0.8 V DIN 4
Driver and Control Input Voltage VIN 5.5 V DIN 4
Receiver Input Voltage VRIN -25 25 V 4
Supply Voltage Range VCC -0.3 6 V 3
Positive Output Supply Voltage Range V+ -0.3 7 V Note 2 3
Negative Output Supply Voltage Range V- -7 0.3 V Note 2 3
Supply Voltage Difference V+ - V- 13 V Note 2 3
Input Voltage, Drivers VIN -0.3 6 V Drivers 3
Input Voltage, Receivers VIN -25 25 V Receivers 3
Output Voltage, Drivers VOUT -13.2 13.2 V Drivers 3
Output Voltage, Receivers VOUT -0.3 V Receivers; upper limit printed as VCC+0.3 3
Operating Virtual Junction Temperature TJ 150 °C 3
Operating Free-Air Temperature (MAX3232C) 0 70 °C MAX3232C 3
Junction to Ambient, SOP-16 θJA 105 °C/W SOP-16 3

CAD (KiCad official)

  • Symbol: MAX3232CSE
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: max3232cse-etched.step / max3232cse-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3232cse.step / max3232cse.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: UMW datasheet (12 pp, sha256 f5d14462460075a8, 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