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MAX3232EIMT

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by adom

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

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MAX3232EIMT

HGSEMI · RS232 ICs · TSSOP-16

MAX3232EIMT 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 for the first charge pump capacitor, used with a 0.1 µF (or 1.0 µF in the application table) external capacitor.
2 V+ power_out Doubled voltage terminal; absolute maximum is (VCC - 0.3) to 7 V, and V+ and
3 C1- passive Negative terminal for the first charge pump capacitor.
4 C2+ passive Positive terminal for the second charge pump capacitor.
5 C2- passive Negative terminal for the second charge pump capacitor.
6 V- power_out Inverted voltage terminal; absolute range is 0.3 to -7 V, and V+ and
7 T2OUT output Second RS-232 transmitter output; absolute range is ±13.2 V and it tolerates continuous short to GND.
8 R2IN input Second RS-232 receiver input; operating range is ±25 V with input resistance of 3 to 7 kΩ.
9 R2OUT output Second receiver TTL/CMOS output; absolute range is -0.3 V to (VCC + 0.3) V and VOL is at most 0.4 V.
10 T2IN input Second transmitter TTL/CMOS logic input; VIL is at most 0.8 V and VIH is 2 V at 3.3 V or 2.4 V at 5 V, with absolute range -0.3 to 6 V.
11 T1IN input First transmitter TTL/CMOS logic input; VIL is at most 0.8 V and VIH is 2 V at 3.3 V or 2.4 V at 5 V, with absolute range -0.3 to 6 V.
12 R1OUT output First receiver TTL/CMOS output; absolute range is -0.3 V to (VCC + 0.3) V and VOL is at most 0.4 V.
13 R1IN input First RS-232 receiver input; operating range is ±25 V with input resistance of 3 to 7 kΩ.
14 T1OUT output First RS-232 transmitter output; absolute range is ±13.2 V and it tolerates continuous short to GND.
15 GND power_in Ground reference for the device.
16 VCC power_in Supply voltage, 3.3 V to 5.5 V operating; absolute maximum range is -0.3 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
VCC Supply Voltage VCC -0.3 6 V 3
Doubled Voltage Terminal V+ 7 V 3
Inverted Voltage Terminal V- -7 0.3 V 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 3
Transmitter Output Voltage Range TOUT -13.2 13.2 V 3
Receiver Output Voltage Range ROUT -0.3 V 3
Operating Temperature (MAX3232EI) Ta -40 85 °C MAX3232EI 3
Storage Temperature Ts -60 150 °C 3
Lead Temperature TL 260 °C Soldering, 10 seconds 3
VCC Power Supply Current (3.3V) ISUPPLY 2.5 5 mA No Load VCC = 3.3V ±10% TA = 25°C 3
VCC Power Supply Current (5V) ISUPPLY 6 10 mA No Load VCC = 5V ±10% TA = 25°C 3
Input Logic Threshold High (VCC=3.3V) VTIH 2 V VCC = 3.3V 3
Input Logic Threshold High (VCC=5V) VTIH 2.4 V VCC = 5V 3
Input Logic Threshold Low VTIL 0.8 V T-IN (Note 1) 3
Input Leakage Current IIL -1 0.01 1 µA T-IN 3
Output Voltage Swing (VCC=5.0V) VTOUT -5 5.4 V All transmitter outputs loaded with 3KΩ to GND; VCC = 5.0V 4
Output Voltage Swing (VCC=3.3V) VTOUT -3.5 4 V All transmitter outputs loaded with 3KΩ to GND; VCC = 3.3V 4
Transmitter Output Resistance (minimum) RTOUT 300 Ω VCC = V+ = V- = 0V VOUT = ±2V 4
Transmitter Output Resistance (maximum) RTOUT 10 MΩ 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 (VCC=3.3V) VRIL 0.6 1.2 V TA = 25°C VCC = 3.3V 4
RS-232 Input Threshold Low (VCC=5V) VRIL 0.8 1.5 V TA = 25°C VCC = 5V 4
RS-232 Input Threshold High (VCC=3.3V) VRIH 1.5 2.4 V TA = 25°C VCC = 3.3V 4
RS-232 Input Threshold High (VCC=5V) 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: MAX3232EIMT
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: max3232eimt-etched.step / max3232eimt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3232eimt.step / max3232eimt.glb are 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, 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