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MAX3223EIPWR

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

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Verified MAX3223EIPWR

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 20 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MAX3223EIPWR · TSSOP-20 · 20 pins
  • ✓copper: 20 copper pads, none touching another net
  • ✓datasheet: all 20 pin names found in the 25-page datasheet
  • ✓distributor: lcsc C485526, digikey 296-19843-2-ND, mouser 595-MAX3223EIPWR
  • ✓family: TSSOP-20_4.4x6.5mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-3n0dk6vg/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): the datasheet dimensions give no height or body size to compare
  • ✓pads: 20 pins = 20 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 20 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ max3223eipwr.kicad_sym✓ max3223eipwr.kicad_mod✓ max3223eipwr.step
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MAX3223EIPWR

Texas Instruments · RS232 ICs · TSSOP-20

MAX3223EIPWR 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: when EN is high the receiver outputs ROUT are forced high-impedance, and logic inputs accept 0 V to 5.5 V with VIL max 0.8 V and VIH min 2.4 V at VCC = 5 V.
2 C1+ passive Positive terminal of charge-pump flying capacitor C1, which is 0.1 µF at VCC = 3.3 V or 0.047 µF at VCC = 5 V with nonpolarized ceramic capacitors acceptable.
3 V+ power_out Positive charge-pump output that supplies the RS-232 driver, with an absolute maximum of −0.3 V to 7 V and a V+ to V− difference of 13 V maximum.
4 C1− passive Negative terminal of charge-pump flying capacitor C1, connected across C1+ with the same 0.1 µF or 0.047 µF value depending on VCC.
5 C2+ passive Positive terminal of charge-pump flying capacitor C2, which is 0.1 µF at VCC = 3.3 V or 0.33 µF at VCC = 5 V.
6 C2− passive Negative terminal of charge-pump flying capacitor C2, connected across C2+ with the same value as C2.
7 V− power_out Negative charge-pump output that supplies the RS-232 driver, with an absolute maximum magnitude of 7 V and a V+ to V− difference of 13 V maximum.
8 DOUT2 output RS-232 driver 2 output, rated to ±13.2 V absolute maximum and protected to ±15 kV HBM ESD.
9 RIN2 input RS-232 receiver 2 input, rated to ±25 V with a 3 kΩ to 5 kΩ input resistance and ±15 kV HBM ESD protection.
10 ROUT2 output Receiver 2 CMOS output that swings to VCC − 0.1 V minimum high at IOH = −1 mA and goes high-impedance when EN is high.
11 INVALID output Output that is high when any receiver input exceeds ±2.7 V or has been between −0.3 V and 0.3 V for less than 30 µs, and low when the input stays within that band for more than 30 µs.
12 DIN2 input Driver 2 logic input that accepts 5 V logic levels with a 3.3 V supply, with the input range 0 V to 5.5 V.
13 DIN1 input Driver 1 logic input that accepts 5 V logic levels with a 3.3 V supply, with the input range 0 V to 5.5 V.
14 FORCEON input Auto-powerdown control input: with FORCEON low and FORCEOFF high auto-powerdown is enabled, and with FORCEON and FORCEOFF both high it is disabled.
15 ROUT1 output Receiver 1 CMOS output that swings to VCC − 0.1 V minimum high at IOH = −1 mA and goes high-impedance when EN is high.
16 RIN1 input RS-232 receiver 1 input, rated to ±25 V with a 3 kΩ to 5 kΩ input resistance and ±15 kV HBM ESD protection.
17 DOUT1 output RS-232 driver 1 output, rated to ±13.2 V absolute maximum and protected to ±15 kV HBM ESD.
18 GND power_in Network ground, to which all voltages are referenced.
19 VCC power_in Supply voltage input, which operates from 3 V to 3.6 V (3.3 V nominal) or 4.5 V to 5.5 V (5 V nominal) with an absolute maximum of 6 V.
20 FORCEOFF input Active-low shutdown input: when low, both drivers and receivers are shut off and the supply current drops to 1 µA typical, with a 0 V to 5.5 V input range.

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 (VCC = 3.3 V) VCC 3 3.3 3.6 V VCC = 3.3 V 5
Supply voltage (VCC = 5 V) VCC 4.5 5 5.5 V VCC = 5 V 5
Driver and control high-level input voltage (VCC = 3.3 V) VIH 2 V DIN, EN, FORCEOFF, FORCEON; VCC = 3.3 V 5
Driver and control high-level input voltage (VCC = 5 V) VIH 2.4 V DIN, EN, FORCEOFF, FORCEON; VCC = 5 V 5
Driver and control low-level input voltage VIL 0.8 V DIN, EN, FORCEOFF, FORCEON 5
Driver and control input voltage VI 0 5.5 V DIN, EN, FORCEOFF, FORCEON 5
Receiver input voltage VI -25 25 V 5
Operating free-air temperature (MAX3223EI) TA -40 85 °C MAX3223EI 5
Supply voltage range VCC VCC -0.3 6 V 4
Positive-output supply voltage range V+ V+ -0.3 7 V Referenced to network GND 4
Negative-output supply voltage range V- V- 0.3 -7 V Referenced to network GND; values as printed 4
Supply voltage difference V+, V- V+, V- 13 V 4
Driver input voltage range VI -0.3 6 V Driver (FORCEOFF, FORCEON, EN) 4
Receiver input voltage range VI -25 25 V Receiver 4
Driver output voltage range VO -13.2 13.2 V Driver 4
Operating virtual junction temperature TJ 150 °C 4
Storage temperature range Tstg -65 150 °C 4
Package thermal impedance (PW package) θJA 83 °C/W PW package 4
Input leakage current II -1 0.01 1 μA EN, FORCEOFF, FORCEON 5
Supply current, auto-powerdown disabled ICC 0.3 1 mA VCC = 3.3 V or 5 V, TA = 25°C, auto-powerdown disabled; no load, FORCEOFF and FORCEON at VCC 5
Supply current, powered off ICC 1 10 μA No load, FORCEOFF at GND 5
Supply current, auto-powerdown enabled ICC 1 10 μA No load, FORCEOFF at VCC, FORCEON at GND, all RIN open or grounded 5
Driver high-level output voltage VOH 5 5.4 V DOUT at RL = 3 kΩ to GND 6
Driver low-level output voltage VOL -5 -5.4 V DOUT at RL = 3 kΩ to GND 6
Driver high-level input current IIH -1 0.01 1 μA VI = VCC 6
Driver low-level input current IIL -1 0.01 1 μA VI at GND 6
Short-circuit output current IOS 35 60 mA VCC = 3.6 V, VO = 0 V 6
Output resistance ro 300 Ω VCC, V+, and V- = 0 V, VO = ±2 V 6
Output leakage current (VCC = 3 V to 3.6 V) IOZ -25 25 μA FORCEOFF = GND, VCC = 3 V to 3.6 V, VO = ±12 V 6
Output leakage current (VCC = 4.5 V to 5.5 V) IOZ -25 25 μA FORCEOFF = GND, VCC = 4.5 V to 5.5 V, VO = ±12 V 6
Maximum data rate 250 500 kbit/s CL = 1000 pF, RL = 3 kΩ, one DOUT switching, See Figure 1 6
Pulse skew (driver) tsk(p) 100 ns CL = 150 pF to 2500 pF, RL = 3 kΩ to 7 kΩ, See Figure 2 6
Driver slew rate, transition region SR(tr) 6 30 V/μs RL = 3 kΩ to 7 kΩ, CL = 150 pF to 1000 pF, See Figure 1 6
Driver slew rate, transition region (VCC = 3.3 V) SR(tr) 4 30 V/μs VCC = 3.3 V, RL = 3 kΩ to 7 kΩ, CL = 150 pF to 2500 pF 6
Receiver low-level output voltage VOL 0.4 V IOL = 1.6 mA 7
Positive-going input threshold voltage (VCC = 3.3 V) VIT+ 1.6 2.4 V VCC = 3.3 V 7
Negative-going input threshold voltage (VCC = 3.3 V) VIT- 0.6 1.1 V VCC = 3.3 V 7
Positive-going input threshold voltage (VCC = 5 V) VIT+ 1.9 2.4 V VCC = 5 V 7
Negative-going input threshold voltage (VCC = 5 V) VIT- 0.6 1.4 V VCC = 5 V 7
Receiver output leakage current IOZ -0.05 0.05 μA EN = VCC 7
Receiver input resistance ri 3 5 kΩ VI = ±3 V to ±25 V 7
Receiver input threshold for INVALID high (valid positive) VT+(valid) 2.7 V FORCEON = GND, FORCEOFF = VCC 8
Receiver input threshold for INVALID high (valid negative) VT-(valid) -2.7 V FORCEON = GND, FORCEOFF = VCC 8
Receiver input threshold for INVALID low (invalid band) VT(invalid) -0.3 0.3 V FORCEON = GND, FORCEOFF = VCC 8
INVALID low-level output voltage VOL 0.4 V IOL = 1.6 mA, FORCEON = GND, FORCEOFF = VCC 8

CAD (KiCad official)

  • Symbol: MAX3223EIPWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: max3223eipwr-etched.step / max3223eipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3223eipwr.step / max3223eipwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (25 pp, sha256 8cb0e762a464f597, retrieved 2026-10-30, tier: manufacturer)
  • 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