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MAX3222EEUP+T

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Analog Devices Inc Maxim Integrated RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MAX3222EEUP+T

Analog Devices Inc Maxim Integrated · RS232 ICs · TSSOP-20

MAX3222EEUP+T from Analog Devices Inc 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, active low; driving EN high places the receiver outputs in a high-impedance state (input logic low max 0.8V).
2 C1+ passive Positive terminal of the voltage-doubler charge-pump capacitor.
3 V+ power_out +5.5V generated by the charge pump, with a reservoir capacitor connected.
4 C1- passive Negative terminal of the voltage-doubler charge-pump capacitor.
5 C2+ passive Positive terminal of the inverting charge-pump capacitor.
6 C2- passive Negative terminal of the inverting charge-pump capacitor.
7 V- power_out -5.5V generated by the charge pump, with a reservoir capacitor connected.
8 T2OUT output RS-232 transmitter 2 output, high-impedance in shutdown and tolerant of being driven up to ±12V in shutdown.
9 R2IN input RS-232 receiver 2 input, ESD protected to ±15kV, absolute maximum ±25V.
10 R2OUT tri_state TTL/CMOS receiver 2 output, three-state via EN and active in shutdown.
11 N.C. unconnected No connection.
12 T2IN input TTL/CMOS transmitter 2 input with no pullup resistor; connect unused input to GND or VCC.
13 T1IN input TTL/CMOS transmitter 1 input with no pullup resistor; connect unused input to GND or VCC.
14 N.C. unconnected No connection.
15 R1OUT tri_state TTL/CMOS receiver 1 output, three-state via EN and active in shutdown.
16 R1IN input RS-232 receiver 1 input, ESD protected to ±15kV, absolute maximum ±25V.
17 T1OUT output RS-232 transmitter 1 output, high-impedance in shutdown and tolerant of being driven up to ±12V in shutdown.
18 GND power_in Ground.
19 VCC power_in +3.0V to +5.5V supply voltage.
20 SHDN input Shutdown control, active low; SHDN = GND disables transmitters and charge pump for 1µA supply current while receivers stay active.

Key specifications

Parameter Value
Manufacturer Analog Devices Inc Maxim Integrated
Package TSSOP-20
Category Interface
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 3 5.5 V VCC = +3V to +5.5V (electrical characteristics header) 2
Operating temperature range (MAX32__EE__) TA -40 85 °C MAX3222EE grade 2
VCC to GND VCC -0.3 6 V 2
V+ to GND V+ -0.3 7 V Note 1: V+ and V- magnitudes max 7V 2
V- to GND V- -7 0.3 V Note 1: V+ and V- magnitudes max 7V 2
V+ + /V-/ 13 V Note 1 2
Input voltages T_IN, EN, SHDN, MBAUD to GND -0.3 6 V 2
Input voltage R_IN to GND -25 25 V 2
Output voltage T_OUT to GND -13.2 13.2 V 2
Output voltage R_OUT to GND -0.3 V Upper limit printed as VCC + 0.3V (not numeric) 2
Storage temperature range TSTG -65 150 °C 2
Lead temperature (soldering) 300 °C soldering, 10s 2
Soldering temperature (reflow) 260 °C reflow 2
Supply current 0.3 1 mA SHDN = VCC, no load; VCC = +3.3V or +5V, TA = +25°C (MAX3222E) 2
Shutdown supply current 1 10 μA SHDN = GND 2
Input logic low (T_IN, EN, SHDN, MBAUD) 0.8 V 2
Input logic high (T_IN, EN, SHDN, MBAUD) 2 V VCC = +3.3V 2
Input logic high (T_IN, EN, SHDN, MBAUD) 2.4 V VCC = +5.0V 2
Input leakage current (T_IN, EN, SHDN) -1 0.01 1 μA MAX3222E 2
Receiver output leakage current (R_OUT) -10 0.05 10 μA EN = VCC, receivers disabled 3
Output-voltage low (R_OUT) 0.4 V IOUT = 1.6mA 3
Input voltage range (R_IN) -25 25 V 3
Input resistance (R_IN) 3 5 7 kΩ TA = +25°C 3
Output voltage swing (T_OUT) -5 5.4 V All transmitter outputs loaded with 3kΩ to ground (Note 6) 3
Output short-circuit current (T_OUT) -60 60 mA 3
Output leakage current (T_OUT) -25 25 μA VCC = 0V or +3.0V to +5.5V, VOUT = ±12V, transmitters disabled 3
ESD Human Body Model -15 15 kV Human Body Model 3
ESD IEC 1000-4-2 Air-Gap Discharge -15 15 kV Except MAX3237E 3
ESD IEC 1000-4-2 Contact Discharge (R_IN, T_OUT) -8 8 kV Except MAX3237E; R_IN, T_OUT 3
Maximum data rate 250 kbps TA = TMIN to TMAX (MAX3222E/MAX3232E/MAX3241E) (Note 6) 4
Transmitter skew /tPHL - tPLH/ 100 ns Note 7 4
Receiver skew /tPHL - tPLH/ 50 ns 4
Receiver output enable time 200 ns Normal operation (except MAX3232E) 4
Receiver output disable time 200 ns Normal operation (except MAX3232E) 4
Transition-region slew rate 6 30 V/µs VCC = +3.3V, TA = +25°C, RL = 3kΩ to 7kΩ, CL = 150pF to 1000pF, one transmitter switching 4

CAD (KiCad official)

  • Symbol: MAX3222EEUP+T
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: max3222eeup-t-etched.step / max3222eeup-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3222eeup-t.step / max3222eeup-t.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices Inc Maxim Integrated datasheet (22 pp, sha256 20eaa43b0891f3bc, 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