component
MAX3225EAP+T
Public Made by Adomby adom
Maxim Integrated Pre-ordered Chips, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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MAX3225EAP+T
Maxim Integrated · Pre-ordered Chips · SSOP-20-208mil
MAX3225EAP+T from 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 | READY | output | Ready to Transmit output, active high; READY is driven high when V- goes below -4V and the device is ready to transmit, and is driven low in shutdown. |
| 2 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor C1. |
| 3 | V+ | power_out | +5.5V generated by the charge pump; charge-pump output that is pulled to VCC in shutdown. |
| 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 generated by the charge pump; the transmitters are enabled only when the magnitude of V- exceeds approximately -3V. |
| 8 | T2OUT | output | RS-232 transmitter 2 output, guaranteed at least ±5V with a 3kΩ load and high impedance when the transmitters are disabled. |
| 9 | R2IN | input | RS-232 receiver 2 input, with an input voltage range of -25V to +25V. |
| 10 | R2OUT | output | TTL/CMOS receiver 2 output (inverting), active in all operating modes. |
| 11 | INVALID | output | Valid signal detector output, active low; a logic-high indicates a valid RS-232 level is present on a receiver input, independent of FORCEON and FORCEOFF. |
| 12 | T2IN | input | TTL/CMOS transmitter 2 input; it has no pull-up, so unused inputs must be connected to GND or VCC. |
| 13 | T1IN | input | TTL/CMOS transmitter 1 input; it has no pull-up, so unused inputs must be connected to GND or VCC. |
| 14 | FORCEON | input | Force-On input, active high; drive high to override AutoShutdown Plus and keep transmitters and receivers on, provided FORCEOFF is high. |
| 15 | R1OUT | output | TTL/CMOS receiver 1 output (inverting), active in all operating modes. |
| 16 | R1IN | input | RS-232 receiver 1 input, with an input voltage range of -25V to +25V. |
| 17 | T1OUT | output | RS-232 transmitter 1 output, guaranteed at least ±5V with a 3kΩ load and high impedance when the transmitters are disabled. |
| 18 | GND | power_in | Ground reference for the device. |
| 19 | VCC | power_in | +3.0V to +5.5V single supply voltage. |
| 20 | 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 | Maxim Integrated |
| Package | SSOP-20-208mil |
| Category | Interface ICs |
| 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 | VCC = +3V to +5.5V (test-conditions header) | 2 | |
| Operating temperature range (E grade) | TA | -40 | 85 | °C | MAX32_ E _ | 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-/ | 13 | V | Note 1 | 2 | |||
| Input voltage T_IN, FORCEON, FORCEOFF to GND | -0.3 | 6 | V | 2 | |||
| Receiver input R_IN to GND | R_IN | -25 | 25 | V | 2 | ||
| Transmitter output T_OUT to GND | T_OUT | -13.2 | 13.2 | V | 2 | ||
| Output voltage R_OUT, INVALID, READY to GND | -0.3 | V | Upper limit printed as VCC + 0.3V | 2 | |||
| Storage temperature range | TSTG | -65 | 160 | °C | 2 | ||
| Lead temperature (soldering, 10 s) | 300 | °C | 10 s soldering | 2 | |||
| Soldering temperature (reflow) | 260 | °C | Reflow | 2 | |||
| Input Threshold High | 1.8 | 2.4 | V | VCC = 5.0V; T_IN, FORCEON, FORCEOFF; TA = +25°C | 2 | ||
| Input Threshold High | 1.5 | 2.4 | V | VCC = 3.3V; T_IN, FORCEON, FORCEOFF; TA = +25°C | 2 | ||
| Input Threshold Low | 0.8 | 1.5 | V | VCC = 5.0V; T_IN, FORCEON, FORCEOFF; TA = +25°C | 2 | ||
| Input Threshold Low | 0.6 | 1.2 | V | VCC = 3.3V; T_IN, FORCEON, FORCEOFF; TA = +25°C | 2 | ||
| Input Logic Threshold High | 2.4 | V | 2 | ||||
| Input Logic Threshold Low | 0.8 | V | 2 | ||||
| Input Voltage Range (receiver inputs) | -25 | 25 | V | 2 | |||
| Output Voltage Low (R_OUT) | VOL | 0.4 | V | IOUT = 1.6mA | 2 | ||
| Supply Current, Shutdown | ICC | 1 | 10 | µA | FORCEOFF = GND; TA = +25°C | 2 | |
| Supply Current, AutoShutdown Plus | ICC | 1 | 10 | µA | FORCEON = GND, FORCEOFF = VCC, all R_IN idle, all T_IN idle; TA = +25°C | 2 | |
| Supply Current, AutoShutdown Plus Disabled | ICC | 0.3 | 1 | mA | FORCEON = FORCEOFF = VCC, no load | 2 | |
| Output Resistance (transmitter, powered off) | ROUT | 300 | Ω | VCC = V+ = V- = 0, transmitter outputs = ±2V | 3 | ||
| Output Voltage Swing | VO | -5 | 5.4 | V | All transmitter outputs loaded with 3kΩ to ground | 3 | |
| Output Leakage Current (transmitters disabled) | -25 | 25 | µA | VCC = 0 or 3V to 5.5V, VOUT = ±12V, transmitters disabled | 3 | ||
| Output Short-Circuit Current | IOS | -60 | 60 | mA | 3 | ||
| Receiver input threshold to INVALID output low | -0.3 | 0.3 | V | Figure 4a | 3 | ||
| Receiver input threshold to INVALID output high | -2.7 | 2.7 | V | Figure 4a | 3 | ||
| INVALID, READY Output Voltage Low | 0.4 | V | 3 | ||||
| Maximum data rate (VCC 4.5 V to 5.5 V) | 1000 | kbps | VCC = 4.5V to 5.5V, RL = 3kΩ, CL = 1000pF, one transmitter switching | 4 | |||
| Maximum data rate (VCC 3.0 V to 4.5 V) | 250 | kbps | VCC = 3.0V to 4.5V, RL = 3kΩ, CL = 250pF, one transmitter switching | 4 | |||
| Transition-region slew rate | 24 | 150 | V/µs | VCC = 3.3V, TA = +25°C, RL = 3kΩ to 7kΩ, CL = 150pF to 1000pF, measured from +3V to -3V or -3V to +3V | 4 | ||
| Receiver output enable time | 200 | ns | 4 | ||||
| Receiver output disable time | 200 | ns | 4 | ||||
| Receiver skew /tPHL - tPLH/ | 50 | ns | 4 | ||||
| Transmitter skew /tPHL - tPLH/ | 25 | ns | 4 |
CAD (KiCad official)
- Symbol:
MAX3225EAP+T - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
max3225eap-t-etched.step/max3225eap-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3225eap-t.step/max3225eap-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Maxim Integrated datasheet (19 pp, sha256
cb52c14514f7e6c3, retrieved 2026-10-31, tier: manufacturer) - 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).