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MAX3226EEAE+T
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Analog Devices Inc Maxim Integrated RS232 ICs, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMAX3226EEAE+T
Analog Devices Inc Maxim Integrated · RS232 ICs · SSOP-16-208mil
MAX3226EEAE+T from Analog Devices Inc Maxim Integrated, in a SSOP-16-208mil. 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 | READY | output | Ready to Transmit Output, active-high; READY is enabled high when V- goes below -4V and the device is ready to transmit. |
| 2 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor. |
| 3 | V+ | power_out | +5.5V generated by the charge pump. |
| 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. |
| 8 | R1IN | input | RS-232 receiver input; the input voltage range is -25V to +25V. |
| 9 | R1OUT | output | TTL/CMOS receiver output. |
| 10 | INVALID | output | Valid Signal Detector Output, active low; a logic high indicates that a valid RS-232 level is present on a receiver input. |
| 11 | T1IN | input | TTL/CMOS transmitter input; it has no pullup resistor, so unused inputs should be connected to GND or VCC. |
| 12 | FORCEON | input | Force-On Input, active high; drive high to override AutoShutdown Plus and keep transmitters and receivers on (FORCEOFF must be high). |
| 13 | T1OUT | output | RS-232 transmitter output, which goes high-impedance when the transmitters are disabled. |
| 14 | GND | power_in | Ground. |
| 15 | VCC | power_in | +3.0V to +5.5V single supply voltage. |
| 16 | FORCEOFF | input | Force-Off Input, active low; drive low to shut down transmitters, receivers, and the charge pump, overriding AutoShutdown Plus and FORCEON. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | SSOP-16-208mil |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 16 |
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 | 2 | |
| Operating temperature range (EE grade, MAX3226EEAE) | TA | -40 | 85 | °C | MAX32_ EE _ | 2 | |
| VCC to GND | VCC | -0.3 | 6 | V | 2 | ||
| V+ to GND | V+ | -0.3 | 7 | V | Note 1 | 2 | |
| V- to GND | V- | -7 | 0.3 | V | Note 1 | 2 | |
| V+ + /V-/ | V+ + /V-/ | 13 | V | Note 1 | 2 | ||
| T_IN, FORCEON, FORCEOFF to GND (input voltages) | -0.3 | 6 | V | 2 | |||
| R_IN to GND (input voltages) | -25 | 25 | V | 2 | |||
| T_OUT to GND (output voltages) | -13.2 | 13.2 | V | 2 | |||
| R_OUT, INVALID, READY to GND (output voltages) | -0.3 | V | Upper limit printed as VCC + 0.3V | 2 | |||
| Storage temperature range | TSTG | -65 | 160 | °C | 2 | ||
| Lead temperature (soldering, 10s) | 300 | °C | 10s | 2 | |||
| Soldering temperature (reflow) | 260 | °C | 2 | ||||
| Derating, 16-Pin SSOP | 7.14 | mW/°C | Derate above +70°C | 2 | |||
| Receiver input resistance | RIN | 3 | 5 | 7 | kΩ | 2 | |
| Receiver input voltage range | -25 | 25 | V | 2 | |||
| Input logic threshold high (T_IN, FORCEON, FORCEOFF) | VIH | 2.4 | V | T_IN, FORCEON, FORCEOFF | 2 | ||
| Input logic threshold low (T_IN, FORCEON, FORCEOFF) | VIL | 0.8 | V | T_IN, FORCEON, FORCEOFF | 2 | ||
| Output voltage low (R_OUT, INVALID, READY) | VOL | 0.4 | V | IOUT = 1.6mA | 2 | ||
| Output leakage current (receivers disabled) | -10 | 0.05 | 10 | µA | 2 | ||
| Output leakage current (receivers disabled), second row | -1 | 0.01 | 1 | µA | 2 | ||
| Supply current, shutdown | ICC | 1 | 10 | µA | FORCEOFF = GND | 2 | |
| Supply current, AutoShutdown Plus | ICC | 1 | 10 | µA | FORCEON = GND, FORCEOFF = VCC, all R_IN idle, all T_IN idle | 2 | |
| Supply current, AutoShutdown Plus disabled | ICC | 0.3 | 1 | mA | FORCEON = FORCEOFF = VCC, no load | 2 | |
| Transmitter output voltage swing | VO | 5 | 5.4 | V | All transmitter outputs loaded with 3kΩ to ground | 3 | |
| Transmitter output resistance | ROUT | 300 | 10 | Ω | VCC = V+ = V- = 0V, transmitter outputs = ±2V; max printed as 10M Ω | 3 | |
| Transmitter output leakage current | IOL | -25 | 25 | µA | VCC = 0V or 3V to 5.5V, VOUT = ±12V, transmitters disabled | 3 | |
| Transmitter output short-circuit current | IOS | -60 | 60 | mA | 3 | ||
| ESD, R_IN and T_OUT, Human Body Model | -15 | 15 | kV | Human Body Model | 3 | ||
| ESD, R_IN and T_OUT, IEC 1000-4-2 contact discharge | -8 | 8 | kV | IEC 1000-4-2 Contact Discharge | 3 | ||
| ESD, R_IN and T_OUT, IEC 1000-4-2 air discharge | -15 | 15 | kV | IEC 1000-4-2 Air Discharge | 3 | ||
| Receiver input threshold to INVALID output low | -0.3 | 0.3 | V | 3 | |||
| Receiver input threshold to INVALID output high, negative threshold | -2.7 | V | Negative threshold | 3 | |||
| Receiver input threshold to INVALID output high, positive threshold | 2.7 | V | Positive threshold | 3 | |||
| AutoShutdown time, transmitters shutdown | tAUTOSHDN | 15 | 30 | 60 | s | Receiver or transmitter edge to transmitters shutdown | 3 |
| Wake-up time, transmitters enabled | tWU | 100 | µs | Receiver or transmitter edge to transmitters enabled | 3 | ||
| INVALID low time | tINVL | 30 | µs | Receiver positive or negative threshold to INVALID low | 3 | ||
| INVALID high time | tINVH | 1 | µs | Receiver positive or negative threshold to INVALID high | 3 | ||
| Maximum data rate (MAX3226E) | 250 | kbps | 4 | ||||
| Receiver output enable time | 200 | ns | 4 | ||||
| Receiver output disable time | 200 | ns | 4 | ||||
| Transmitter skew /tPHL - tPLH/ | 100 | ns | Note 3 | 4 | |||
| Receiver skew /tPHL - tPLH/ | 50 | ns | 4 | ||||
| External capacitor C1-C4 (3.3V test) | C1-C4 | 0.1 | µF | Tested at 3.3V ±10% | 2 | ||
| External capacitor C1 (5.0V test) | C1 | 0.047 | µF | Tested at 5.0V ±10% | 2 | ||
| External capacitor C2-C4 (5.0V test) | C2-C4 | 0.33 | µF | Tested at 5.0V ±10% | 2 |
CAD (KiCad official)
- Symbol:
MAX3226EEAE+T - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files:
max3226eeae-t-etched.step/max3226eeae-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3226eeae-t.step/max3226eeae-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (21 pp, sha256
5499fbcb48eadd2c, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).