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MAX3223ECUP+

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Maxim Integrated Pre-ordered Chips, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterface icsmax3223ecup+factory-2.0.0extractor-text

Verified MAX3223ECUP+

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: MAX3223ECUP+ · TSSOP-20 · 20 pins
  • ✓copper: 20 copper pads, none touching another net
  • ✓datasheet: all 20 pin names found in the 16-page datasheet
  • ✓distributor: lcsc C1544420, digikey MAX3223ECUP+-ND, mouser 700-MAX3223ECUP
  • ✓family: TSSOP-20_4.4x6.5mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-qy6924hp/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 20 pins = 20 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 20 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ max3223ecup.kicad_sym✓ max3223ecup.kicad_mod✓ max3223ecup.step
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MAX3223ECUP+

Maxim Integrated · Pre-ordered Chips · TSSOP-20

MAX3223ECUP+ from Maxim Integrated, 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 control: drive low for normal receiver operation and drive high to force the receiver outputs into a high-Z state.
2 C1+ passive Positive terminal of the voltage doubler charge-pump capacitor (C1, 0.1µF for 3.3V operation).
3 V+ power_out +5.5V generated by the charge pump; V+ decays to VCC when the device is shut down.
4 C1- passive Negative terminal of the voltage doubler charge-pump capacitor.
5 C2+ passive Positive terminal of the inverting charge-pump capacitor (C2).
6 C2- passive Negative terminal of the inverting charge-pump capacitor (C2).
7 V- power_out -5.5V generated by the charge pump; V- decays to ground when the device is shut down.
8 T2OUT output RS-232 transmitter 2 output, forced to high impedance when FORCEOFF is low or AutoShutdown disables the transmitters.
9 R2IN input RS-232 receiver 2 input, tolerant of ±25V per the input voltage range and with approximately 5kΩ input resistance.
10 R2OUT output TTL/CMOS receiver 2 output (inverting, three-state controlled by EN).
11 INVALID output Output of the valid signal detector: logic high indicates a valid RS-232 level is present on the receiver inputs, low indicates shutdown.
12 T2IN input TTL/CMOS transmitter 2 input, with logic thresholds of 0.8V (low) and 2.0V to 2.4V (high) depending on VCC.
13 T1IN input TTL/CMOS transmitter 1 input, with logic thresholds of 0.8V (low) and 2.0V to 2.4V (high) depending on VCC.
14 FORCEON input Drive high to override the automatic circuitry and keep the transmitters on (FORCEOFF must be high).
15 R1OUT output TTL/CMOS receiver 1 output (inverting, three-state controlled by EN).
16 R1IN input RS-232 receiver 1 input, tolerant of ±25V per the input voltage range and with approximately 5kΩ input resistance.
17 T1OUT output RS-232 transmitter 1 output, forced to high impedance when FORCEOFF is low or AutoShutdown disables the transmitters.
18 GND power_in Ground reference for the device.
19 VCC power_in +3.0V to +5.5V supply voltage.
20 FORCEOFF input Drive low to shut down the transmitters and on-board power supply, overriding all automatic circuitry and FORCEON.

Key specifications

Parameter Value
Manufacturer Maxim Integrated
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 VCC -0.3 6 V 2
V+ generated supply V+ -0.3 7 V Note 1: /V+/ and /V-/ max 7V, V+ + /V-/ max 13V 2
V- generated supply V- -7 0.3 V Note 1: /V+/ and /V-/ max 7V, V+ + /V-/ max 13V 2
V+ + /V-/ difference V+ + /V-/ 13 V Note 1 2
Input voltage T_IN, FORCEOFF, FORCEON, EN (MAX3223) -0.3 6 V 2
Input voltage R_IN R_IN -25 25 V 2
Output voltage T_OUT T_OUT -13.2 13.2 V 2
Operating temperature range, MAX3223E (E grade) TA -40 85 °C MAX32_ E _ 2
Supply voltage range VCC 3 5.5 V Test range; C1-C4 = 0.1µF 2
Storage temperature range TSTG -65 150 °C 2
Lead temperature (soldering) 300 °C 10s soldering 2
Supply current, AutoShutdown 1 10 µA VCC = 3.3V or 5.0V, TA = +25°C; All R_IN open, FORCEON = GND, FORCEOFF = VCC 2
Supply current, Shutdown 1 10 µA FORCEOFF = GND 2
Supply current, AutoShutdown Disabled 0.3 1 mA FORCEON = FORCEOFF = VCC, no load 2
Input Logic Threshold Low 0.8 V T_IN, FORCEON, FORCEOFF, EN (MAX3223) 2
Input Logic Threshold High 2 V T_IN, EN, FORCEON, FORCEOFF; VCC = 3.3V 2
Input Logic Threshold High 2.4 V T_IN, EN, FORCEON, FORCEOFF; VCC = 5.0V 2
Input Leakage Current -1 0.01 1 µA T_IN, EN, FORCEON, FORCEOFF 2
Output Leakage Current -10 0.05 10 µA Receivers disabled 2
Output Voltage Low 0.4 V IOUT = 1.6mA 2
Receiver Input Thresholds to Transmitters Disabled -0.3 0.3 V 1μA supply current, Figure 5 2
INVALID Output Voltage Low 0.4 V IOUT = 1.6mA 2
Input Voltage Range -25 25 V 3
Maximum Data Rate 120 235 kbps RL = 3kΩ, CL = 1000pF, one transmitter switching 3
Input Resistance 3 5 7 kΩ TA = +25°C 3
Output Voltage Swing -5 5.4 V All transmitter outputs loaded with 3kΩ to ground 3
Output Leakage Current (transmitters disabled) VOUT -25 25 µA VOUT = ±12V, VCC = 0V or 3.0V to 5.5V, transmitters disabled 3
Transition-Region Slew Rate 4 8 30 V/µs VCC = 3.3V, RL = 3kΩ to 7kΩ, TA = +25°C, CL = 200pF to 2500pF 3
Thermal resistance, junction-to-ambient, single layer board (20-pin TSSOP) θJA 91 °C/W Single layer board 15
Thermal resistance, junction-to-case, single layer board (20-pin TSSOP) θJC 20 °C/W Single layer board 15
Thermal resistance, junction-to-ambient, multi layer board (20-pin TSSOP) θJA 73.8 °C/W Multi layer board 15
Thermal resistance, junction-to-case, multi layer board (20-pin TSSOP) θJC 20 °C/W Multi layer board 15

CAD (KiCad official)

  • Symbol: MAX3223ECUP+
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: max3223ecup-etched.step / max3223ecup-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3223ecup.step / max3223ecup.glb are the bare package body.

Provenance

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

  • Datasheet: Maxim Integrated datasheet (16 pp, sha256 4b10ea08c7155060, 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