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MAX3223EAP+T

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Analog Devices Inc Maxim Integrated RS232 ICs, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MAX3223EAP+T

Analog Devices Inc Maxim Integrated · RS232 ICs · SSOP-20-208mil

MAX3223EAP+T from Analog Devices Inc Maxim Integrated, in a SSOP-20-208mil. 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, drive high to force the receiver outputs into a high-impedance state.
2 C1+ passive Positive terminal of the voltage doubler charge-pump capacitor (0.1µF for 3.3V operation).
3 V+ power_out +5.5V generated by the internal charge pump, regardless of VCC over the +3.0V to +5.5V range.
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 inverting charge pump, regardless of VCC over the +3.0V to +5.5V range.
8 T2OUT output RS-232 transmitter output, ±5.0V minimum into 3kΩ loads; forced to high-impedance when FORCEOFF is low or AutoShutdown disables the transmitters.
9 R2IN input RS-232 receiver input, input voltage range ±25V.
10 R2OUT output TTL/CMOS inverting three-state receiver output, high-impedance when EN is high.
11 INVALID output Output of the valid signal detector; logic 1 indicates a valid RS-232 level is present on the receiver inputs.
12 T2IN input TTL/CMOS transmitter input.
13 T1IN input TTL/CMOS transmitter input.
14 FORCEON input Drive high to override the automatic circuitry and keep transmitters on (FORCEOFF must be high).
15 R1OUT output TTL/CMOS inverting three-state receiver output, high-impedance when EN is high.
16 R1IN input RS-232 receiver input, input voltage range ±25V.
17 T1OUT output RS-232 transmitter output, ±5.0V minimum into 3kΩ loads; 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 Supply voltage, +3.0V to +5.5V.
20 FORCEOFF input Drive low to shut down transmitters and the on-board power supply, overriding all automatic circuitry and FORCEON.

Key specifications

Parameter Value
Manufacturer Analog Devices Inc Maxim Integrated
Package SSOP-20-208mil
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 Electrical characteristics header: VCC = +3.0V to +5.5V 2
Operating temperature range (E grade, MAX32_ E _) TA -40 85 °C MAX32_ E _ operating range 2
VCC supply voltage absolute maximum VCC -0.3 6 V 2
V+ generated supply absolute maximum V+ -0.3 7 V Note 1 2
V- generated supply absolute maximum V- -7 0.3 V Note 1 2
V+ + /V-/ absolute maximum V+ + /V-/ 13 V Note 1 2
Input voltage T_IN, FORCEOFF, FORCEON, EN (MAX3223) -0.3 6 V 2
Input voltage R_IN -25 25 V 2
Output voltage T_OUT -13.2 13.2 V 2
Storage temperature range -65 150 °C 2
Lead temperature (soldering) 300 °C soldering, 10s 2
Output Voltage Low 0.4 V IOUT = 1.6mA 2
Input Logic Threshold Low 0.8 V T_IN, FORCEON, FORCEOFF, EN (MAX3223) 2
Input Logic Threshold High VCC = 3.3V 2 V T_IN, EN, FORCEON, FORCEOFF; VCC = 3.3V 2
Input Logic Threshold High VCC = 5.0V 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
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
Receiver Input Threshold to Transmitters Enabled, positive 2.7 V Figure 5 2
Receiver Input Threshold to Transmitters Enabled, negative -2.7 V Figure 5 2
Receiver Input Threshold 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
Receiver Threshold to Transmitters Enabled (tWU) tWU 250 µs Figure 5 2
Receiver Threshold to INVALID High (tINVH) tINVH 1 µs Figure 5 3
Receiver Threshold to INVALID Low (tINVL) tINVL 30 µs Figure 5 3
Receiver Input Voltage Range -25 25 V 3
Input Threshold Low VCC = 3.3V 0.6 1.2 V TA = +25°C; VCC = 3.3V 3
Input Threshold Low VCC = 5.0V 0.8 1.5 V TA = +25°C; VCC = 5.0V 3
Input Threshold High VCC = 3.3V 1.5 2.4 V TA = +25°C; VCC = 3.3V 3
Input Threshold High VCC = 5.0V 1.8 2.4 V TA = +25°C; VCC = 5.0V 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 Resistance 300 10 MΩ VCC = V+ = V- = 0V, transmitter output = ±2V 3
Output Short-Circuit Current 35 60 mA 3
Output Leakage Current (transmitters disabled) -25 25 µA VOUT = ±12V, VCC = 0V or 3.0V to 5.5V, transmitters disabled 3
Maximum Data Rate 120 235 kbps RL = 3kΩ, CL = 1000pF, one transmitter switching 3
Receiver Propagation Delay tPHL tPHL 0.3 µs Receiver input to receiver output, CL = 150pF 3
Receiver Propagation Delay tPLH tPLH 0.3 µs Receiver input to receiver output, CL = 150pF 3
Receiver Output Enable Time 200 ns Normal operation 3
Receiver Output Disable Time 200 ns Normal operation 3
Transmitter Skew /tPHL - tPLH/ MAX3221/MAX3223 200 ns MAX3221/MAX3223 3
Receiver Skew /tPHL - tPLH/ MAX3221/MAX3223 100 ns MAX3221/MAX3223 3
Transition-Region Slew Rate CL = 200pF to 2500pF 4 8 30 V/µs VCC = 3.3V, RL = 3kΩ to 7kΩ, TA = +25°C, measured from +3V to -3V or -3V to +3V 3
Transition-Region Slew Rate CL = 200pF to 1000pF 6 30 V/µs VCC = 3.3V, RL = 3kΩ to 7kΩ, TA = +25°C, measured from +3V to -3V or -3V to +3V; CL = 200pF to 1000pF 3
Thermal resistance junction-to-ambient, single layer board (20-pin SSOP) θJA 125 °C/W 20 SSOP, single layer board 15
Thermal resistance junction-to-case, single layer board (20-pin SSOP) θJC 33 °C/W 20 SSOP, single layer board 15
Thermal resistance junction-to-ambient, multi layer board (20-pin SSOP) θJA 84 °C/W 20 SSOP, multi layer board 15
Thermal resistance junction-to-case, multi layer board (20-pin SSOP) θJC 32 °C/W 20 SSOP, multi layer board 15

CAD (KiCad official)

  • Symbol: MAX3223EAP+T
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: max3223eap-t-etched.step / max3223eap-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3223eap-t.step / max3223eap-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 (16 pp, sha256 4b10ea08c7155060, 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