component
MAX3232CDR
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
markdownMAX3232CDR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3232cdr.step/max3232cdr.glbare 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, 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).