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MAX3232CDR

Public Made by Adom

by adom

UMW RS232 ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MAX3232CDR

UMW · RS232 ICs · SOP-16

MAX3232CDR 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 C1, one of the four external charge-pump capacitors.
2 V+ power_out Charge-pump output generating +5.5 V; absolute maximum V+ is -0.3 V to +7.0 V with respect to network GND.
3 C1- passive Negative terminal of the voltage-doubler charge-pump capacitor C1.
4 C2+ passive Positive terminal of the inverting charge-pump capacitor C2.
5 C2- passive Negative terminal of the inverting charge-pump capacitor C2.
6 V- power_out Charge-pump output generating -5.5 V; absolute maximum V- is +0.3 V to -7.0 V with respect to network GND.
7 DOUT2 output RS-232 driver output 2; absolute maximum output voltage is -13.2 V to +13.2 V.
8 RIN2 input RS-232 receiver input 2; input voltage is rated from -25 V to +25 V.
9 ROUT2 output TTL/CMOS receiver output 2; absolute maximum output voltage is -0.3 V to VCC+0.3 V.
10 DIN2 input TTL/CMOS driver input 2; VIH is 2.0 V minimum at VCC=3.3 V and 2.4 V minimum at VCC=5 V, and VIL is 0.8 V maximum.
11 DIN1 input TTL/CMOS driver input 1; VIH is 2.0 V minimum at VCC=3.3 V and 2.4 V minimum at VCC=5 V, and VIL is 0.8 V maximum.
12 ROUT1 output TTL/CMOS receiver output 1; absolute maximum output voltage is -0.3 V to VCC+0.3 V.
13 RIN1 input RS-232 receiver input 1; input voltage is rated from -25 V to +25 V.
14 DOUT1 output RS-232 driver output 1; absolute maximum output voltage is -13.2 V to +13.2 V.
15 GND power_in Ground; the network GND is the reference for all device voltages.
16 VCC power_in Supply voltage of 3.0 V to 5.5 V; absolute maximum VCC is -0.3 V to +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 voltage range VCC -0.3 6 V 3
Positive output supply voltage range V+ -0.3 7 V Note 2: voltages with respect to network GND 3
Negative output supply voltage range V- -7 0.3 V Note 2: voltages with respect to network GND; printed as +0.3 ~ -7.0 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; printed upper limit is VCC+0.3 V (not a number) 3
Operating virtual junction temperature TJ 150 °C 3
Operating temperature range, MAX3232C 0 70 °C MAX3232C 3
Junction to ambient thermal resistance, SOP-16 θJA 105 °C/W SOP-16 package; single value in Ratings column 3
Supply voltage VCC 3 3.3 3.6 V VCC=3.3V 4
Supply voltage VCC 4.5 5 5.5 V VCC=5.5V 4
Driver and control high-level input voltage VIH 2 V VCC=3.3V 4
Driver and control high-level input voltage VIH 2.4 V VCC=5V 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
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 -5.4 -5 V DOUT at RL=3kΩ to GND, DIN=VCC 5
High-level input current IOH -1 1 µA VI=VCC 5
Low-level input current IOL -1 1 µA VI at GND 5
Short-circuit output current IOS -35 35 mA VCC=3.6V, VOUT=0V 5
Short-circuit output current IOS -60 60 mA VCC=5.5V, VOUT=0V 5
Output resistance rO 300 Ω VCC, V+ and V- =0V, VOUT=±2.0V 5
Receiver low-level output voltage VOL 0.4 V IOH=1.6mA (as printed) 5
Input resistance RI 3 5 7 kΩ VI=±3.0V~±25V 5
Supply current ICC 0.3 1 mA No load 5
Maximum data rate 120 250 Kbit/s 6

CAD (KiCad official)

  • Symbol: MAX3232CDR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: max3232cdr-etched.step / max3232cdr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3232cdr.step / max3232cdr.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