component
MAX3232ECMT
Public Made by Adomby adom
HGSEMI RS232 ICs, TSSOP-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
markdownMAX3232ECMT
HGSEMI · RS232 ICs · TSSOP-16
MAX3232ECMT from HGSEMI, in a TSSOP-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 first charge-pump capacitor, which connects externally to C1- (the datasheet specifies 0.1 µF capacitors for 3.3 V operation). |
| 2 | V+ | power_out | Doubled-voltage output of the charge pump, which must stay within 7 V magnitude with |
| 3 | C1- | passive | Negative terminal of the first charge-pump capacitor, connected to C1+ through the external capacitor. |
| 4 | C2+ | passive | Positive terminal of the second charge-pump capacitor, connected to C2- through the external capacitor. |
| 5 | C2- | passive | Negative terminal of the second charge-pump capacitor, connected to C2+ through the external capacitor. |
| 6 | V- | power_out | Inverted-voltage output of the charge pump, which must stay within 7 V magnitude with |
| 7 | T2OUT | output | RS-232 output of the second transmitter, rated ±13.2 V absolute maximum and short-circuit tolerant to GND (continuous). |
| 8 | R2IN | input | RS-232 input of the second receiver, rated ±25 V absolute maximum with a 3 kΩ to 7 kΩ input resistance range (typically 5 kΩ). |
| 9 | R2OUT | output | TTL/CMOS output of the second receiver, referenced to VCC and limited to -0.3 V to (VCC + 0.3) V. |
| 10 | T2IN | input | TTL/CMOS logic input of the second transmitter, with absolute maximum range -0.3 V to 6 V. |
| 11 | T1IN | input | TTL/CMOS logic input of the first transmitter, with absolute maximum range -0.3 V to 6 V. |
| 12 | R1OUT | output | TTL/CMOS output of the first receiver, referenced to VCC and limited to -0.3 V to (VCC + 0.3) V. |
| 13 | R1IN | input | RS-232 input of the first receiver, rated ±25 V absolute maximum. |
| 14 | T1OUT | output | RS-232 output of the first transmitter, rated ±13.2 V absolute maximum and short-circuit tolerant to GND (continuous). |
| 15 | GND | power_in | Ground reference for the device. |
| 16 | VCC | power_in | Supply voltage, specified 3.3 V to 5.5 V in operation (absolute maximum -0.3 V to 6 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TSSOP-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 | ||
| Doubled Voltage Terminal | V+ | 7 | V | Printed as (VCC - 0.3) to 7 | 3 | ||
| Inverted Voltage Terminal | V- | -7 | 0.3 | V | Printed as 0.3 to -7 | 3 | |
| V+ + /V-/ | V+ + /V-/ | 13 | V | 3 | |||
| Transmitter Input Voltage Range | TIN | -0.3 | 6 | V | 3 | ||
| Receiver Input Voltage Range | RIN | -25 | 25 | V | Printed as ±25 | 3 | |
| Transmitter Output Voltage Range | TOUT | -13.2 | 13.2 | V | Printed as ±13.2 | 3 | |
| Receiver Output Voltage Range | ROUT | -0.3 | V | Printed as -0.3 to (VCC + 0.3) | 3 | ||
| Operating Temperature (MAX3232EC) | Ta | 0 | 70 | °C | MAX3232EC | 3 | |
| Storage Temperature | Ts | -60 | 150 | °C | 3 | ||
| Lead Temperature | TL | 260 | °C | Soldering, 10 seconds | 3 | ||
| Supply Voltage Operating Range | VCC | 3.3 | 5.5 | V | Stated as test condition VCC = 3.3V to 5.5V in electrical characteristics header | 3 | |
| VCC Power Supply Current | ISUPPLY | 2.5 | 5 | mA | No Load VCC = 3.3V ±10% TA = 25°C | 3 | |
| VCC Power Supply Current | ISUPPLY | 6 | 10 | mA | No Load VCC = 5V ±10% TA = 25°C | 3 | |
| Input Logic Threshold Low | VTIL | 0.8 | V | T-IN (Note 1) | 3 | ||
| Input Logic Threshold High | VTIH | 2 | V | VCC = 3.3V | 3 | ||
| Input Logic Threshold High | VTIH | 2.4 | V | VCC = 5V | 3 | ||
| Input Leakage Current | IIL | -1 | 0.01 | 1 | µA | T-IN | 3 |
| Transmitter Output Voltage Swing | VTOUT | -5 | 5.4 | V | All Transmitter outputs are loaded with 3KΩ to GND; VCC = 5.0V | 4 | |
| Transmitter Output Voltage Swing | VTOUT | -3.5 | 4 | V | All Transmitter outputs are loaded with 3KΩ to GND; VCC = 3.3V | 4 | |
| Transmitter Output Resistance | RTOUT | 300 | Ω | VCC = V+ = V- = 0V VOUT = ±2V | 4 | ||
| Output Short Circuit Current | ITSC | -60 | 60 | mA | VCC = 3.3V to 5V VOUT = 0V | 4 | |
| Receiver Input Voltage Operating Range | VRIN | -25 | 25 | V | 4 | ||
| RS-232 Input Threshold Low | VRIL | 0.6 | 1.2 | V | TA = 25°C VCC = 3.3V | 4 | |
| RS-232 Input Threshold Low | VRIL | 0.8 | 1.5 | V | TA = 25°C VCC = 5V | 4 | |
| RS-232 Input Threshold High | VRIH | 1.5 | 2.4 | V | TA = 25°C VCC = 3.3V | 4 | |
| RS-232 Input Threshold High | VRIH | 1.8 | 2.4 | V | TA = 25°C VCC = 5V | 4 | |
| Input Hysteresis | VRIHYS | 0.3 | V | 4 | |||
| Input Resistance | RRIN | 3 | 5 | 7 | kΩ | TA = 25°C | 4 |
| TTL/CMOS Output Voltage Low | VROL | 0.4 | V | IOUT = 1.6mA VCC = 3.3V | 4 | ||
| Data Transfer Rate | DR | 120 | Kbps | RL = 3KΩ CL2= 1000pF one transmitter switching VCC=3.3V | 5 | ||
| Propagation Delay Input to Output (receiver) | tPHLR, tPLHR | 4 | 9.7 | µs | RXIN = RXOUT CL = 150pF | 5 | |
| Propagation Delay Input to Output (transmitter) | tPHLT, tPLHT | 2 | 5 | µs | RL = 3KΩ CL = 2500pF | 5 | |
| Receiver Propagation Delay Difference | /tPHLR - tPLHR/ | 300 | ns | 5 | |||
| Transmitter Propagation Delay Difference | /tPHLT - tPLHT/ | 300 | ns | 5 | |||
| Transition Slew Rate | SRT | 3 | 30 | V/µs | TA = 25°C RL = 3KΩ to 7KΩ VCC =3.3V measured from +3V to -3V or -3V to +3V CL= 150pF to 1000pF | 5 |
CAD (KiCad official)
- Symbol:
MAX3232ECMT - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
max3232ecmt-etched.step/max3232ecmt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3232ecmt.step/max3232ecmt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (12 pp, sha256
f67f171274e08184, retrieved 2026-10-18, 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).