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MAX13223EEUP+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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MAX13223EEUP+T

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

MAX13223EEUP+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 control input: drive low for normal operation, drive high to force R1OUT and R2OUT into a high-impedance state.
2 C1+ passive Positive terminal of the voltage-doubler charge-pump capacitor C1.
3 V+ power_out +5.5V supply generated by the doubling charge pump, which requires reservoir capacitor C3 (or C4 per the datasheet's capacitor table).
4 C1- passive Negative terminal of the voltage-doubler charge-pump capacitor C1.
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 supply generated by the inverting charge pump, regulated regardless of VCC over the +3.0V to +5.5V range.
8 T2OUT output RS-232 transmitter 2 output, fault-protected to ±70V and forced to high-impedance when disabled.
9 R2IN input RS-232 receiver 2 input, fault-protected to the ±70V range.
10 R2OUT output Receiver 2 logic output, asserted low in shutdown when EN is low and high-impedance when EN is high.
11 INVALID output Valid-signal detector output that is high when a valid RS-232 level is present on any receiver input.
12 T2IN input Transmitter 2 TTL/CMOS logic input.
13 T1IN input Transmitter 1 TTL/CMOS logic input.
14 FORCEON input Active-high input that overrides AutoShutdown, keeping transmitters and charge pump on (FORCEOFF must be high).
15 R1OUT output Receiver 1 logic output, asserted low in shutdown when EN is low and high-impedance when EN is high.
16 R1IN input RS-232 receiver 1 input, fault-protected to the ±70V range.
17 T1OUT output RS-232 transmitter 1 output, fault-protected to ±70V and forced to high-impedance when disabled.
18 GND power_in Ground reference for the device; all voltages are referenced to GND.
19 VCC power_in +3.0V to +5.5V supply voltage; bypass with a 0.1µF ceramic capacitor located as close to the device as possible.
20 FORCEOFF input Active-low input that shuts down transmitters, receivers, and on-board charge pumps, overriding AutoShutdown and FORCEON.

Key specifications

Parameter Value
Manufacturer Analog Devices Inc Maxim Integrated
Package TSSOP-20
Category Communication Interface Chip/UART/485/232
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 5.5 V 2
Supply Current, AutoShutdown disabled 8 15 mA FORCEON = FORCEOFF = VCC, no load 2
Supply Current AutoShutdown IASD 1 10 µA FORCEON = GND, FORCEOFF = VCC, R1IN and R2IN idle, T1IN and T2IN idle 2
Supply Current Shutdown ISD 1 10 µA FORCEOFF = GND 2
Input-Logic Low VT_IN,LO 0.8 V T_IN, EN, FORCEON, FORCEOFF, VCC = +3.3V to +3.6V, +5.0V to +5.5V 2
Input-Logic High VT_IN,HI 2 V T_IN, FORCEON, FORCEOFF, EN; VCC = +3.3V 2
Input-Logic High VT_IN,HI 2.4 V T_IN, FORCEON, FORCEOFF, EN; VCC = +5.0V 2
Input Leakage Current IIN,LKG -1 0.01 1 µA T_IN, EN, FORCEON, FORCEOFF 2
Output Leakage Current IRX,OUT,LKG -10 0.05 10 µA EN = VCC 2
Output-Voltage Low VRX,OUT,LO 0.4 V IOUT = 1.6mA 2
Receiver-Input Level to INVALID Output High, positive level VRX_IN, INV_HI 2.7 V Figure 6a; positive level 3
Receiver-Input Level to INVALID Output High, negative level VRX_IN, INV_HI -2.7 V Figure 6a; negative level 3
Receiver-Input Level to INVALID Output Low VRX_IN, INV_LO -0.3 0.3 V Figure 6a 3
INVALID Output-Voltage Low VRX,INV_LO 0.4 V IOUT = 1.6mA 3
Input-Voltage Range VRX,IN -70 70 V Note 3 3
Overvoltage Threshold /VRX,OVTHR/ 24 28.3 32 V 3
Input Threshold Low VRX,LO 0.6 V VCC = +3.3V 3
Input Threshold Low VRX,LO 0.8 V VCC = +5.0V 3
Input Threshold High VRX,HI 2.4 V VCC = +3.3V 3
Input Resistance RRX,INRES 3 5 7 kΩ -24V < VR_IN < +24V (Note 3) 3
Input Resistance RRX,INRES 35 250 kΩ VCC = V+ = V- = 0V 3
Output-Voltage Swing VO -5 6 5 V RL = 3kΩ, Figure 4 3
Output Resistance RTX,ROUT 300 Ω VCC = V+ = V- = 0V, VT_OUT = ±2V 3
Overvoltage Protection Threshold /VTX,FB/ 14 19 V 3
Output Short-Circuit Current ITX,SHORT -80 80 mA T_OUT = GND 3
Overvoltage Current ITX,IFBOUT 6 mA VT_OUT > VTX,FB 3
Overvoltage Current ITX,IFBOUT -6 mA VT_OUT < -VTX,FB 3
Output Leakage Current in Shutdown Mode ITX,LKG 450 900 µA VT_OUT = +12V 3
Output Leakage Current in Shutdown Mode ITX,LKG -150 -80 µA T_OUT = -12V, VCC = 0V, or +3V to +5.5V in shutdown mode 3
Overvoltage Protection Range -70 70 V R1IN, R2IN, T1OUT, T2OUT 3
ESD, IEC 61000-4-2 Contact Discharge -8 8 kV R1IN, R2IN, T1OUT, T2OUT; IEC 61000-4-2 Contact Discharge 3
ESD, Human Body Model -8 8 kV R1IN, R2IN, T1OUT, T2OUT 3
ESD, Human Body Model, all other pins -2 2 kV All other pins 3
Maximum Data Rate DR 250 kbps RL = 3kΩ, CL = 1000pF, one transmitter switching, Figure 1 4
Receiver Positive or Negative Threshold to INVALID High tINVH 1 µs VCC = 5V, Figure 6b 4
Receiver Positive or Negative Threshold to INVALID Low tINVL 30 µs VCC = 5V, Figure 6b 4
Receiver Edge to Transmitters Enabled tWU 135 µs VCC = 5V, Figure 6b 4
Receiver-Output Enable Time tRX,EN 200 ns Normal operation 4
Receiver-Output Disable Time tRX,DIS 200 ns Normal operation 4
Receiver Skew /tPRHL - tPRLH/ 50 ns 4
Transmitter Skew /tPTHL - tPTLH/ 200 ns Note 5 4
Transmitter Time to Exit Shutdown tSHDN 100 µs Figure 7 4
Output Recovery Time tTX,REC 100 µs CL = 1nF, RL = 5k (Note 6) 4
Transition-Region Slew Rate SROUT 6 30 V/µs VCC = +3.3V, RL = 3kΩ to 7kΩ, TA = +25ºC, measured from +3V to -3V or -3V to +3V, one transmitter switching, CL = 1nF 4
Supply Voltage, absolute maximum VCC VCC -0.3 7 V Voltages referenced to GND 2
Supply Voltage, absolute maximum V+ V+ -0.3 7 V Voltages referenced to GND 2
Supply Voltage, absolute maximum V- V- -7 0.3 V Voltages referenced to GND 2
V+ to V- differential, absolute maximum V+ to V- 13 V 2
Input Voltage, absolute maximum (T1IN, T2IN, EN, FORCEON, FORCEOFF) -0.3 6 V 2
Input Voltage, absolute maximum (R1IN, R2IN) -70 70 V 2
Output Voltage, absolute maximum (T1OUT, T2OUT) -70 70 V 2
Operating Temperature Range -40 85 °C 2
Junction Temperature 150 °C 2
Storage Temperature Range -65 150 °C 2
Lead Temperature 300 °C soldering, 10s 2

CAD (KiCad official)

  • Symbol: MAX13223EEUP+T
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: max13223eeup-t-etched.step / max13223eeup-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max13223eeup-t.step / max13223eeup-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 (12 pp, sha256 94b909882a40ee2f, 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