component
MAX221ECAE+T
Public Made by Adomby adom
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
markdownMAX221ECAE+T
Analog Devices Inc Maxim Integrated · RS232 ICs · SSOP-16-208mil
MAX221ECAE+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 | EN | input | Receiver Enable Control: drive low for normal operation, and drive high to force the receiver output (ROUT) into a high-impedance state. |
| 2 | C1+ | passive | Positive terminal of the voltage doubler charge-pump capacitor. |
| 3 | V+ | power_out | Positive voltage generated by the charge pump; in shutdown V+ is pulled to VCC. |
| 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 | Negative voltage generated by the charge pump; in shutdown V- is pulled to ground. |
| 8 | RIN | input | RS-232 receiver input; the AutoShutdown logic uses this input to detect valid levels (±2.7V trip, ±0.3V threshold region). |
| 9 | ROUT | output | TTL/CMOS receiver output (inverting, three-state). |
| 10 | INVALID | output | Output of the invalid signal detector; INVALID is pulled low if no valid RS-232 level is present on the receiver input. |
| 11 | TIN | input | TTL/CMOS transmitter input; the transmitter input has no pull-up resistor. |
| 12 | FORCEON | input | Drive high to override the automatic circuitry and keep the transmitter and charge pump on; FORCEOFF must be high (Table 1). |
| 13 | TOUT | output | RS-232 transmitter output; short-circuit duration is continuous and the output goes high-impedance when disabled. |
| 14 | GND | power_in | Ground. |
| 15 | VCC | power_in | Supply voltage, +4.5V to +5.5V. |
| 16 | FORCEOFF | input | Force-off input, active low: drive low to shut down the transmitter, receiver and on-board charge pump, overriding all automatic circuitry 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 |
CAD (KiCad official)
- Symbol:
MAX221ECAE+T - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files:
max221ecae-t-etched.step/max221ecae-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max221ecae-t.step/max221ecae-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (8 pp, sha256
a03e770a885f02d4, 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).