component
MAX232ECMT
Public Made by Adomby adom
HGSEMI RS232 ICs, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MAX232ECMT
HGSEMI · RS232 ICs · TSSOP-16
MAX232ECMT 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 | Connects to the external charge-pump capacitor of the positive voltage multiplier (datasheet: output of external capacitance of positive voltage multiplier unit); no capacitor value is stated in the text. |
| 2 | V+ | power_out | Positive voltage output of the voltage multiplier, specified at 5.0 V minimum under recommended conditions and limited to VCC-0.3 V to 14 V in absolute maximum ratings. |
| 3 | C1- | passive | Connects to the external charge-pump capacitor of the positive voltage multiplier (datasheet: output of external capacitance of positive voltage multiplier unit); no capacitor value is stated in the text. |
| 4 | C2+ | passive | Connects to the external charge-pump capacitor of the negative voltage multiplier (datasheet: output of external capacitance of negative voltage multiplier unit); no capacitor value is stated in the text. |
| 5 | C2- | passive | Connects to the external charge-pump capacitor of the negative voltage multiplier (datasheet: output of external capacitance of negative voltage multiplier unit); no capacitor value is stated in the text. |
| 6 | V- | power_out | Negative voltage output of the voltage multiplier, specified at -5.0 V minimum under recommended conditions and limited to -14 V to -0.3 V in absolute maximum ratings. |
| 7 | T2OUT | output | RS-232 level transmitter 2 output, delivering at least ±5.0 V into a 3 kΩ load with short-circuit current limited to ±60 mA. |
| 8 | R2IN | input | RS-232 level receiver 2 input, rated for receiver input voltage of -30 V to +30 V. |
| 9 | R2OUT | output | TTL/CMOS level receiver 2 output, with VOH at least 3.5 V (IOH = -1.0 mA) and VOL at most 0.4 V (IOL = 3.2 mA) over the rated temperature range. |
| 10 | T2IN | input | TTL/CMOS level transmitter 2 input, with transmitter input voltage rated from 0 V to VCC. |
| 11 | T1IN | input | TTL/CMOS level transmitter 1 input, with transmitter input voltage rated from 0 V to VCC. |
| 12 | R1OUT | output | TTL/CMOS level receiver 1 output, with VOH at least 3.5 V (IOH = -1.0 mA) and VOL at most 0.4 V (IOL = 3.2 mA) over the rated temperature range. |
| 13 | R1IN | input | RS-232 level receiver 1 input, rated for receiver input voltage of -30 V to +30 V. |
| 14 | T1OUT | output | RS-232 level transmitter 1 output, delivering at least ±5.0 V into a 3 kΩ load with short-circuit current limited to ±60 mA. |
| 15 | GND | power_in | Common ground reference for the device. |
| 16 | VCC | power_in | Supply pin with recommended supply voltage of 4.5 V to 5.5 V and absolute maximum of -0.3 V to 6.0 V (datasheet pin table labels it 'Supply output of voltage source', which conflicts with its use as a supply). |
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 | 4.5 | 5.5 | V | 3 | ||
| Transmitter output high voltage | V+ | 5 | V | 3 | |||
| Transmitter output low voltage | V- | -5 | V | 3 | |||
| Transmitter input voltage | VTIN | 0 | V | 3 | |||
| Receiver input voltage | VRIN | -30 | 30 | V | 3 | ||
| Transmitter short circuit output current | ISC | -60 | 60 | mA | 3 | ||
| Ambient temperature (MAX232EC) | Ta | 0 | 70 | ℃ | 3 | ||
| Supply voltage | VCC | -0.3 | 6 | V | 3 | ||
| Transmitter high output voltage | V+ | 14 | V | 3 | |||
| Transmitter low output voltage | V- | -14 | -0.3 | V | 3 | ||
| Transmitter input voltage | VTIN | -0.3 | V | 3 | |||
| Receiver input voltage | VRIN | -30 | 30 | V | 3 | ||
| Ambient temperature | Ta | -60 | 150 | ℃ | 3 | ||
| Lead temperature (soldering, 10 s) | TL | 260 | ℃ | Soldering, 10 seconds | 3 | ||
| Static consumption current | ICC | 10 | mA | VCC=5.5 V, VIL=0 V; 25℃ | 5 | ||
| Static consumption current | ICC | 14 | mA | VCC=5.5 V, VIL=0 V; -40℃ to 85℃ | 5 | ||
| Hysteresis voltage | Vh | 0.2 | 0.9 | V | VCC=5.0 V; 25℃ | 5 | |
| Hysteresis voltage | Vh | 0.2 | 1 | V | VCC=5.0 V; -40℃ to 85℃ | 5 | |
| On (operation) voltage | VOn | 2.4 | V | VO≦0.1 V, IOL≦20 mkA; 25℃ | 5 | ||
| On (operation) voltage | VOn | 2.3 | V | VO≦0.1 V, IOL≦20 mkA; -40℃ to 85℃ | 5 | ||
| Off (dropout) voltage | Voff | 0.8 | V | VO≧VCC -0.1 V, IOH≦-20 mkA; 25℃ | 5 | ||
| Off (dropout) voltage | Voff | 0.9 | V | VO≧VCC -0.1 V, IOH≦-20 mkA; -40℃ to 85℃ | 5 | ||
| Output low voltage | VOL | 0.3 | V | IOL = 3.2 мА, VCC = 4.5 V, VIH = 2.4 V; 25℃ | 5 | ||
| Output low voltage | VOL | 0.4 | V | IOL = 3.2 мА, VCC = 4.5 V, VIH = 2.4 V; -40℃ to 85℃ | 5 | ||
| Output high voltage | VOH | 3.6 | V | IOH = -1.0 мА, VCC = 4.5 V, VIL = 0.8 V; 25℃ | 5 | ||
| Output high voltage | VOH | 3.5 | V | IOH = -1.0 мА, VCC = 4.5 V, VIL = 0.8 V; -40℃ to 85℃ | 5 | ||
| Input resistance | RI | 3 | 7 | kOhm | VCC=5.0 V; 25℃ | 5 | |
| Transmitter output low voltage | VOL | -5.2 | V | VCC=4.5 V, VIH=2.0 V, RL=3.0 kOhm; 25℃ | 5 | ||
| Transmitter output low voltage | VOL | -5 | V | VCC=4.5 V, VIH=2.0 V, RL=3.0 kOhm; -40℃ to 85℃ | 5 | ||
| Transmitter output high voltage | VOH | 5.2 | V | VCC=4.5 V, VIL=0.8 V, RL=3.0 kOhm; 25℃ | 5 | ||
| Transmitter output high voltage | VOH | 5 | V | VCC=4.5 V, VIL=0.8 V, RL=3.0 kOhm; -40℃ to 85℃ | 5 | ||
| Input low current | IIL | -1 | mkA | VCC=5.5 V, VIL=0 V; 25℃ | 5 | ||
| Input low current | IIL | -10 | mkA | VCC=5.5 V, VIL=0 V; -40℃ to 85℃ | 5 | ||
| Input high current | IIH | 1 | 10 | mkA | VCC=5.5 V, VIH=VCC | 5 | |
| Speed of output front change | SR | 3 | 30 | V/mks | VCC=5.0 V, CL=50-1000 pF, RL=3.0-7.0 kOhm; 25℃ | 5 | |
| Speed of output front change | SR | 2.7 | 27 | V/mks | VCC=5.0 V, CL=50-1000 pF, RL=3.0-7.0 kOhm; -40℃ to 85℃ | 5 | |
| Output resistance | RO | 350 | Ohm | VCC = V+ = V- = 0V, VO = 2 V; 25℃ | 5 | ||
| Output resistance | RO | 300 | Ohm | VCC = V+ = V- = 0V, VO = 2 V; -40℃ to 85℃ | 5 | ||
| Short circuit output current | ISC | -50 | 50 | mA | VCC=5.5 V, VO=0V, VI=VCC, VI=0V; 25℃ | 5 | |
| Short circuit output current | ISC | -60 | 60 | mA | VCC=5.5 V, VO=0V, VI=VCC, VI=0V; -40℃ to 85℃ | 5 | |
| Speed of information transmission | ST | 140 | kbit/с | VCC=4.5 V, CL=1000pF, RL=3.0 kOhm, tW=7 mks (extreme tW=8 mks); 25℃ | 5 | ||
| Speed of information transmission | ST | 120 | kbit/с | VCC=4.5 V, CL=1000pF, RL=3.0 kOhm, tW=7 mks (extreme tW=8 mks); -40℃ to 85℃ | 5 | ||
| Signal propagation delay time when switching on (off), receiver | tPHLR (tPLHR) | 9.7 | mks | VCC = 4.5 V, CL = 150 pF, VIL = 0 V, VIH = 3.0 V, tLH = tHL≦10 ns; 25℃ | 6 | ||
| Signal propagation delay time when switching on (off), receiver | tPHLR (tPLHR) | 10 | mks | VCC = 4.5 V, CL = 150 pF, VIL = 0 V, VIH = 3.0 V, tLH = tHL≦10 ns; -40℃ to 85℃ | 6 | ||
| Signal propagation delay time when switching on (off), transmitter | tPHLT (tPLHT) | 5 | mks | VCC = 4.5 V, CL = 2500 pF, VIL = 0 V, VIH = 3.0 V, RL = 3 kOhm, tLH = tHL≦10 ns; 25℃ | 6 | ||
| Signal propagation delay time when switching on (off), transmitter | tPHLT (tPLHT) | 6 | mks | VCC = 4.5 V, CL = 2500 pF, VIL = 0 V, VIH = 3.0 V, RL = 3 kOhm, tLH = tHL≦10 ns; -40℃ to 85℃ | 6 |
CAD (KiCad official)
- Symbol:
MAX232ECMT - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
max232ecmt-etched.step/max232ecmt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max232ecmt.step/max232ecmt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (11 pp, sha256
9a012bf2ba7d349e, retrieved 2026-10-19, 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).
# MAX232ECMT
**HGSEMI** · RS232 ICs · TSSOP-16
MAX232ECMT 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 | Connects to the external charge-pump capacitor of the positive voltage multiplier (datasheet: output of external capacitance of positive voltage multiplier unit); no capacitor value is stated in the text. |
| 2 | V+ | power_out | Positive voltage output of the voltage multiplier, specified at 5.0 V minimum under recommended conditions and limited to VCC-0.3 V to 14 V in absolute maximum ratings. |
| 3 | C1- | passive | Connects to the external charge-pump capacitor of the positive voltage multiplier (datasheet: output of external capacitance of positive voltage multiplier unit); no capacitor value is stated in the text. |
| 4 | C2+ | passive | Connects to the external charge-pump capacitor of the negative voltage multiplier (datasheet: output of external capacitance of negative voltage multiplier unit); no capacitor value is stated in the text. |
| 5 | C2- | passive | Connects to the external charge-pump capacitor of the negative voltage multiplier (datasheet: output of external capacitance of negative voltage multiplier unit); no capacitor value is stated in the text. |
| 6 | V- | power_out | Negative voltage output of the voltage multiplier, specified at -5.0 V minimum under recommended conditions and limited to -14 V to -0.3 V in absolute maximum ratings. |
| 7 | T2OUT | output | RS-232 level transmitter 2 output, delivering at least ±5.0 V into a 3 kΩ load with short-circuit current limited to ±60 mA. |
| 8 | R2IN | input | RS-232 level receiver 2 input, rated for receiver input voltage of -30 V to +30 V. |
| 9 | R2OUT | output | TTL/CMOS level receiver 2 output, with VOH at least 3.5 V (IOH = -1.0 mA) and VOL at most 0.4 V (IOL = 3.2 mA) over the rated temperature range. |
| 10 | T2IN | input | TTL/CMOS level transmitter 2 input, with transmitter input voltage rated from 0 V to VCC. |
| 11 | T1IN | input | TTL/CMOS level transmitter 1 input, with transmitter input voltage rated from 0 V to VCC. |
| 12 | R1OUT | output | TTL/CMOS level receiver 1 output, with VOH at least 3.5 V (IOH = -1.0 mA) and VOL at most 0.4 V (IOL = 3.2 mA) over the rated temperature range. |
| 13 | R1IN | input | RS-232 level receiver 1 input, rated for receiver input voltage of -30 V to +30 V. |
| 14 | T1OUT | output | RS-232 level transmitter 1 output, delivering at least ±5.0 V into a 3 kΩ load with short-circuit current limited to ±60 mA. |
| 15 | GND | power_in | Common ground reference for the device. |
| 16 | VCC | power_in | Supply pin with recommended supply voltage of 4.5 V to 5.5 V and absolute maximum of -0.3 V to 6.0 V (datasheet pin table labels it 'Supply output of voltage source', which conflicts with its use as a supply). |
## 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 | 4.5 | | 5.5 | V | | 3 |
| Transmitter output high voltage | V+ | 5 | | | V | | 3 |
| Transmitter output low voltage | V- | -5 | | | V | | 3 |
| Transmitter input voltage | VTIN | 0 | | | V | | 3 |
| Receiver input voltage | VRIN | -30 | | 30 | V | | 3 |
| Transmitter short circuit output current | ISC | -60 | | 60 | mA | | 3 |
| Ambient temperature (MAX232EC) | Ta | 0 | | 70 | ℃ | | 3 |
| Supply voltage | VCC | -0.3 | | 6 | V | | 3 |
| Transmitter high output voltage | V+ | | | 14 | V | | 3 |
| Transmitter low output voltage | V- | -14 | | -0.3 | V | | 3 |
| Transmitter input voltage | VTIN | -0.3 | | | V | | 3 |
| Receiver input voltage | VRIN | -30 | | 30 | V | | 3 |
| Ambient temperature | Ta | -60 | | 150 | ℃ | | 3 |
| Lead temperature (soldering, 10 s) | TL | | | 260 | ℃ | Soldering, 10 seconds | 3 |
| Static consumption current | ICC | | | 10 | mA | VCC=5.5 V, VIL=0 V; 25℃ | 5 |
| Static consumption current | ICC | | | 14 | mA | VCC=5.5 V, VIL=0 V; -40℃ to 85℃ | 5 |
| Hysteresis voltage | Vh | 0.2 | | 0.9 | V | VCC=5.0 V; 25℃ | 5 |
| Hysteresis voltage | Vh | 0.2 | | 1 | V | VCC=5.0 V; -40℃ to 85℃ | 5 |
| On (operation) voltage | VOn | | | 2.4 | V | VO≦0.1 V, IOL≦20 mkA; 25℃ | 5 |
| On (operation) voltage | VOn | | | 2.3 | V | VO≦0.1 V, IOL≦20 mkA; -40℃ to 85℃ | 5 |
| Off (dropout) voltage | Voff | 0.8 | | | V | VO≧VCC -0.1 V, IOH≦-20 mkA; 25℃ | 5 |
| Off (dropout) voltage | Voff | 0.9 | | | V | VO≧VCC -0.1 V, IOH≦-20 mkA; -40℃ to 85℃ | 5 |
| Output low voltage | VOL | | | 0.3 | V | IOL = 3.2 мА, VCC = 4.5 V, VIH = 2.4 V; 25℃ | 5 |
| Output low voltage | VOL | | | 0.4 | V | IOL = 3.2 мА, VCC = 4.5 V, VIH = 2.4 V; -40℃ to 85℃ | 5 |
| Output high voltage | VOH | 3.6 | | | V | IOH = -1.0 мА, VCC = 4.5 V, VIL = 0.8 V; 25℃ | 5 |
| Output high voltage | VOH | 3.5 | | | V | IOH = -1.0 мА, VCC = 4.5 V, VIL = 0.8 V; -40℃ to 85℃ | 5 |
| Input resistance | RI | 3 | | 7 | kOhm | VCC=5.0 V; 25℃ | 5 |
| Transmitter output low voltage | VOL | | | -5.2 | V | VCC=4.5 V, VIH=2.0 V, RL=3.0 kOhm; 25℃ | 5 |
| Transmitter output low voltage | VOL | | | -5 | V | VCC=4.5 V, VIH=2.0 V, RL=3.0 kOhm; -40℃ to 85℃ | 5 |
| Transmitter output high voltage | VOH | 5.2 | | | V | VCC=4.5 V, VIL=0.8 V, RL=3.0 kOhm; 25℃ | 5 |
| Transmitter output high voltage | VOH | 5 | | | V | VCC=4.5 V, VIL=0.8 V, RL=3.0 kOhm; -40℃ to 85℃ | 5 |
| Input low current | IIL | | | -1 | mkA | VCC=5.5 V, VIL=0 V; 25℃ | 5 |
| Input low current | IIL | | | -10 | mkA | VCC=5.5 V, VIL=0 V; -40℃ to 85℃ | 5 |
| Input high current | IIH | 1 | | 10 | mkA | VCC=5.5 V, VIH=VCC | 5 |
| Speed of output front change | SR | 3 | | 30 | V/mks | VCC=5.0 V, CL=50-1000 pF, RL=3.0-7.0 kOhm; 25℃ | 5 |
| Speed of output front change | SR | 2.7 | | 27 | V/mks | VCC=5.0 V, CL=50-1000 pF, RL=3.0-7.0 kOhm; -40℃ to 85℃ | 5 |
| Output resistance | RO | 350 | | | Ohm | VCC = V+ = V- = 0V, VO = 2 V; 25℃ | 5 |
| Output resistance | RO | 300 | | | Ohm | VCC = V+ = V- = 0V, VO = 2 V; -40℃ to 85℃ | 5 |
| Short circuit output current | ISC | -50 | | 50 | mA | VCC=5.5 V, VO=0V, VI=VCC, VI=0V; 25℃ | 5 |
| Short circuit output current | ISC | -60 | | 60 | mA | VCC=5.5 V, VO=0V, VI=VCC, VI=0V; -40℃ to 85℃ | 5 |
| Speed of information transmission | ST | 140 | | | kbit/с | VCC=4.5 V, CL=1000pF, RL=3.0 kOhm, tW=7 mks (extreme tW=8 mks); 25℃ | 5 |
| Speed of information transmission | ST | 120 | | | kbit/с | VCC=4.5 V, CL=1000pF, RL=3.0 kOhm, tW=7 mks (extreme tW=8 mks); -40℃ to 85℃ | 5 |
| Signal propagation delay time when switching on (off), receiver | tPHLR (tPLHR) | | | 9.7 | mks | VCC = 4.5 V, CL = 150 pF, VIL = 0 V, VIH = 3.0 V, tLH = tHL≦10 ns; 25℃ | 6 |
| Signal propagation delay time when switching on (off), receiver | tPHLR (tPLHR) | | | 10 | mks | VCC = 4.5 V, CL = 150 pF, VIL = 0 V, VIH = 3.0 V, tLH = tHL≦10 ns; -40℃ to 85℃ | 6 |
| Signal propagation delay time when switching on (off), transmitter | tPHLT (tPLHT) | | | 5 | mks | VCC = 4.5 V, CL = 2500 pF, VIL = 0 V, VIH = 3.0 V, RL = 3 kOhm, tLH = tHL≦10 ns; 25℃ | 6 |
| Signal propagation delay time when switching on (off), transmitter | tPHLT (tPLHT) | | | 6 | mks | VCC = 4.5 V, CL = 2500 pF, VIL = 0 V, VIH = 3.0 V, RL = 3 kOhm, tLH = tHL≦10 ns; -40℃ to 85℃ | 6 |
## CAD (KiCad official)
- Symbol: `MAX232ECMT`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `max232ecmt-etched.step` / `max232ecmt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max232ecmt.step` / `max232ecmt.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707275579711488) (11 pp, sha256 `9a012bf2ba7d349e`, retrieved 2026-10-19, 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](docs/max232ecmt-datasheet.pdf)