component

MAX3222EIPWR

Public Made by Adom

by adom

Texas Instruments RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterface icsmax3222eipwrfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Download PDF
Contents

README

markdown

MAX3222EIPWR

Texas Instruments · RS232 ICs · TSSOP-20

MAX3222EIPWR from Texas Instruments, in a TSSOP-20. 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 EN input Receiver enable input; set low to enable receiver outputs, high places ROUT outputs in high-impedance state (VIH 2 V min at 3.3 V, 2.4 V at 5 V; accepts up to 5.5 V).
2 C1+ passive Positive terminal of charge-pump capacitor C1 (0.1 µF at 3.3 V, 0.047 µF at 5 V).
3 V+ power_out Positive charge-pump output supply (absolute maximum 7 V), decoupled with capacitor C3 to VCC or GND; lowered to VCC in power down.
4 C1− passive Negative terminal of charge-pump capacitor C1.
5 C2+ passive Positive terminal of charge-pump capacitor C2 (0.1 µF at 3.3 V, 0.33 µF at 5 V).
6 C2− passive Negative terminal of charge-pump capacitor C2.
7 V− power_out Negative charge-pump output supply (absolute maximum −7 V), decoupled with capacitor C4 to GND; raised toward GND in power down.
8 DOUT2 output RS-232 driver 2 output with ±15 kV HBM ESD protection, swing ±5 V min into 3 kΩ, high-impedance in power down.
9 RIN2 input RS-232 receiver 2 input with 5 kΩ typical input resistance, ±25 V input range and ±15 kV HBM ESD protection.
10 ROUT2 output Logic-level receiver 2 output, high-impedance when EN is high.
11 NC unconnected No internal connection.
12 DIN2 input Logic input for driver 2 (VIL 0.8 V max, accepts up to 5.5 V).
13 DIN1 input Logic input for driver 1 (VIL 0.8 V max, accepts up to 5.5 V).
14 NC unconnected No internal connection.
15 ROUT1 output Logic-level receiver 1 output, high-impedance when EN is high.
16 RIN1 input RS-232 receiver 1 input with 5 kΩ typical input resistance, ±25 V input range and ±15 kV HBM ESD protection.
17 DOUT1 output RS-232 driver 1 output with ±15 kV HBM ESD protection, swing ±5 V min into 3 kΩ, high-impedance in power down.
18 GND power_in Ground.
19 VCC power_in Supply voltage, 3 V to 5.5 V (absolute maximum 6 V), bypassed with 0.1 µF.
20 PWRDOWN input Power-down control input; low disables the charge pump and puts drivers in high impedance with 1 µA typical supply current while receivers stay active.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Interface ICs
Pins 20

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 3
Supply voltage difference V+ - V- 13 V 3
Input voltage range, driver (EN, PWRDOWN) VI -0.3 6 V Driver (EN, PWRDOWN) 3
Input voltage range, receiver VI -25 25 V Receiver 3
Output voltage range, driver VO -13.2 13.2 V Driver 3
Package thermal impedance, PW package θJA 83 °C/W PW package 3
Operating virtual junction temperature TJ 150 °C 3
Storage temperature range Tstg -65 150 °C 3
Supply voltage VCC 3 3.3 3.6 V VCC = 3.3 V 4
Supply voltage VCC 4.5 5 5.5 V VCC = 5 V 4
High-level input voltage DIN, EN, PWRDOWN VIH 2 V VCC = 3.3 V 4
High-level input voltage DIN, EN, PWRDOWN VIH 2.4 V VCC = 5 V 4
Low-level input voltage DIN, EN, PWRDOWN VIL 0.8 V 4
Driver and control input voltage VI 0 5.5 V DIN, EN, PWRDOWN 4
Receiver input voltage VI -25 25 V 4
Operating free-air temperature TA -40 85 °C MAX3222EI 4
Input leakage current (EN, PWRDOWN) II -1 0.01 1 μA 4
Supply current ICC 0.3 1 mA No load, PWRDOWN at VCC 4
Supply current (powered off) ICC 1 10 μA No load, PWRDOWN at GND 4
Driver high-level output voltage VOH 5 5.4 V DOUT at RL = 3 kΩ to GND, DIN = GND 5
Driver low-level output voltage VOL -5.4 -5 V DOUT at RL = 3 kΩ to GND, DIN = VCC 5
Driver high-level input current IIH -1 0.01 1 μA VI = VCC 5
Driver low-level input current IIL -1 0.01 1 μA VI at GND 5
Driver short-circuit output current IOS 35 60 mA VO = 0 V, VCC = 3.6 V to 5.5 V 5
Driver output resistance ro 300 Ω VCC, V+, and V- = 0 V, VO = ±2 V 5
Driver output leakage current IOZ -25 25 μA PWRDOWN = GND, VCC = 3 V to 3.6 V, VO = ±12 V 5
Maximum data rate 250 500 kbit/s CL = 1000 pF, RL = 3 kΩ, One DOUT switching 5
Driver pulse skew tsk(p) 300 ns CL = 150 pF to 2500 pF, RL = 3 kΩ to 7 kΩ 5
Driver slew rate, transition region SR(tr) 6 30 V/μs RL = 3 kΩ to 7 kΩ, VCC = 3.3 V, CL = 150 pF to 1000 pF 5
Driver slew rate, transition region SR(tr) 4 30 V/μs RL = 3 kΩ to 7 kΩ, VCC = 3.3 V, CL = 150 pF to 2500 pF 5
Receiver low-level output voltage VOL 0.4 V IOL = 1.6 mA 6
Positive-going input threshold voltage VIT+ 1.5 2.4 V VCC = 3.3 V 6
Positive-going input threshold voltage VIT+ 1.8 2.4 V VCC = 5 V 6
Negative-going input threshold voltage VIT- 0.6 1.2 V VCC = 3.3 V 6
Negative-going input threshold voltage VIT- 0.8 1.5 V VCC = 5 V 6
Input hysteresis (VIT+ - VIT-) Vhys 0.3 V 6
Receiver output leakage current IOZ -10 0.05 10 μA EN = 1 6
Receiver input resistance ri 3 5 7 kΩ VI = ±3 V to ±25 V 6
Receiver propagation delay, low- to high-level output tPLH 300 ns CL = 150 pF, See Figure 3 6
Receiver propagation delay, high- to low-level output tPHL 300 ns CL = 150 pF, See Figure 3 6
Receiver output enable time ten 200 ns CL = 150 pF, RL = 3 kΩ, See Figure 4 6
Receiver output disable time tdis 200 ns CL = 150 pF, RL = 3 kΩ, See Figure 4 6
Receiver pulse skew tsk(p) 300 ns See Figure 3 6
ESD protection, driver outputs, HBM 15 kV Human-Body Model, DOUTx 5
ESD protection, receiver inputs, HBM 15 kV Human-Body Model, RINx 6

CAD (KiCad official)

  • Symbol: MAX3222EIPWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: max3222eipwr-etched.step / max3222eipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3222eipwr.step / max3222eipwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (22 pp, sha256 d7588c1b5a6ac26a, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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