component
MAX13237EETE+T
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Analog Devices Inc Maxim Integrated RS232 ICs, TQFN-16-EP(5x5). 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
markdownMAX13237EETE+T
Analog Devices Inc Maxim Integrated · RS232 ICs · TQFN-16-EP(5x5)
MAX13237EETE+T from Analog Devices Inc Maxim Integrated, in a TQFN-16-EP(5x5). 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 | C1- | passive | Negative terminal of the voltage doubler charge-pump capacitor. |
| 2 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor. |
| 3 | C2- | passive | Negative terminal of the inverting charge-pump capacitor. |
| 4 | V- | power_out | -5.5V generated by the charge pump; READY goes high when V- goes below -4V. |
| 5 | RIN | input | RS-232 receiver input; the datasheet's absolute maximum rating for R_IN is ±25V. |
| 6 | ROUT | output | CMOS receiver output, referred to the VL logic supply; the receiver output is inverting and active in shutdown (FORCEOFF = GND). |
| 7 | VL | power_in | Logic-level supply that sets the CMOS input and output levels; connect to the host logic supply with 1.62V ≤ VL ≤ VCC. |
| 8 | TIN | input | CMOS transmitter input, referred to VL logic; unused inputs should be connected to GND or VL. |
| 9 | FORCEON | input | Active-high, VL-referenced input that overrides the automatic circuitry to keep the transmitters on; FORCEOFF must be high. |
| 10 | TOUT | output | RS-232 transmitter output; outputs are tri-stated when shut down, and can be driven to ±12V when powered off or shut down. |
| 11 | GND | power_in | Ground reference for all voltages (all voltages are referenced to GND). |
| 12 | VCC | power_in | +3V to +5.5V supply voltage. |
| 13 | FORCEOFF | input | Active-low, VL-referenced input that shuts down the transmitters and on-board charge pumps and tri-states all receiver and transmitter outputs, overriding FORCEON and the AutoShutdown Plus circuitry. |
| 14 | READY | output | Active-high ready-to-transmit output that goes high when V- goes below -4V and is low when the charge pumps are disabled in shutdown. |
| 15 | V+ | power_out | +5.5V generated by the charge pump. |
| 16 | C1+ | passive | Positive terminal of the voltage doubler charge-pump capacitor. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | TQFN-16-EP(5x5) |
| Category | Interface |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC Supply Voltage | VCC | 3 | 5.5 | V | 2 | ||
| Logic Supply Voltage | VL | 1.62 | V | 2 | |||
| VCC Supply Current (FORCEOFF = FORCEON = VL) | ICC | 0.3 | 1 | mA | FORCEOFF = FORCEON = VL, no loads | 2 | |
| VCC Supply Current (AutoShutDown Plus) | ICC | 1 | 10 | µA | FORCEOFF = VL, FORCEON = GND, all R_IN idle, all T_IN idle. | 2 | |
| VCC Shutdown Current | ICCSH | 1 | 10 | µA | FORCEOFF = GND | 2 | |
| VL Supply Current | IL | 1 | 10 | µA | VCC = +5.5V | 2 | |
| VL Shutdown Current | ILSH | 1 | 10 | µA | FORCEOFF = GND | 2 | |
| Input Hysteresis (logic inputs) | 60 | mV | 2 | ||||
| Input Leakage Current (logic inputs) | -1 | 0.01 | 1 | µA | 2 | ||
| Output-Voltage Low (READY) | VOL | 0.4 | V | IOUT = 0.8mA | 2 | ||
| Receiver Input-Voltage Range | -25 | 25 | V | 3 | |||
| Receiver Input Threshold Low | VIL | 0.6 | 1.2 | V | VCC = +3.3V, TA = +25°C | 3 | |
| Receiver Input Threshold Low | VIL | 0.8 | 1.5 | V | VCC = +5V, TA = +25°C | 3 | |
| Receiver Input Threshold High | VIH | 1.5 | 2.4 | V | VCC = +3.3V, TA = +25°C | 3 | |
| Receiver Input Threshold High | VIH | 1.8 | 2.4 | V | VCC = +5V, TA = +25°C | 3 | |
| Receiver Input Hysteresis | 0.5 | V | 3 | ||||
| Receiver Input Resistance | 3 | 5 | 7 | kΩ | 3 | ||
| Transmitter Output-Voltage Swing | -5 | 5.4 | V | All transmitter outputs loaded with 3kΩ to GND | 3 | ||
| Transmitter Output Resistance | 300 | Ω | VCC = V+ = V- = 0V, transmitter outputs = ±2V | 3 | |||
| Transmitter Output Short-Circuit Current | -60 | 60 | mA | 3 | |||
| Transmitter Output Leakage Current | -25 | 25 | µA | VCC = 0V or +3V to +5.5V, VOUT = ±12V, transmitters disabled | 3 | ||
| AutoShutdown Plus Receiver Input Threshold Valid, positive | 2.7 | V | Positive threshold, Figure 1 | 3 | |||
| AutoShutdown Plus Receiver Input Threshold Valid, negative | -2.7 | V | Negative threshold, Figure 1 | 3 | |||
| AutoShutdown Plus Receiver Input Threshold Invalid Level | -0.3 | 0.3 | V | Figure 1 | 3 | ||
| Receiver or Transmitter Edge-to-Transmitters Enabled | tWU | 100 | µs | VL = 5V, Figure 1 (Note 3) | 3 | ||
| Receiver or Transmitter Edge-to-Transmitters Shutdown | tAUTOSHDN | 15 | 30 | 60 | s | VL = 5V, Figure 1 (Note 3) | 3 |
| Maximum Data Rate | 1 | Mbps | RL = 3kΩ, CL = 250pF, one transmitter switching | 4 | |||
| Maximum Data Rate | 3 | Mbps | RL = 3kΩ, CL = 150pF, one transmitter switching | 4 | |||
| Receiver Propagation Delay | tRPHL, tRPLH | 0.15 | µs | CL = 150pF, Figures 2, 3 | 4 | ||
| Transmitter Skew | /tTPHL, tTPLH/ | 25 | ns | Figures 4, 5 (Note 4) | 4 | ||
| Receiver Skew | /tRPHL, tRPLH/ | 50 | ns | Figures 2, 3 | 4 | ||
| Transition-Region Slew Rate | 24 | 150 | V/µs | VCC = +3.3V, TA = +25°C, RL = 3kΩ to 7kΩ, measured from T_OUT = +3V to -3V or -3V to +3V, one transmitter switching, CL = 150pF to 1000pF | 4 | ||
| ESD Human Body Model | -15 | 15 | kV | Human Body Model | 4 | ||
| ESD IEC 61000-4-2 Air Discharge | -15 | 15 | kV | R_IN, T_OUT to GND; IEC 61000-4-2 Air Discharge | 4 | ||
| ESD IEC 61000-4-2 Contact Discharge | -8 | 8 | kV | R_IN, T_OUT to GND; IEC 61000-4-2 Contact Discharge | 4 | ||
| Supply Voltage VCC (absolute maximum) | VCC | -0.3 | 6 | V | 2 | ||
| Logic Supply Voltage VL (absolute maximum) | VL | -0.3 | 6 | V | 2 | ||
| V+ (absolute maximum) | V+ | -0.3 | 7 | V | 2 | ||
| V- (absolute maximum) | V- | -7 | 0.3 | V | 2 | ||
| (V+) + /(V-)/ (absolute maximum) | (V+) + /(V-)/ | 13 | V | 2 | |||
| R_IN input voltage (absolute maximum) | R_IN | -25 | 25 | V | 2 | ||
| T_OUT output voltage (absolute maximum) | T_OUT | -13.2 | 13.2 | V | 2 | ||
| Continuous Power Dissipation | 1666 | mW | TA = +70°C, 16-Pin TQFN | 2 | |||
| Storage Temperature Range | -65 | 160 | °C | 2 | |||
| Lead Temperature | 300 | °C | soldering, 10s | 2 | |||
| Operating Temperature Range | TA | -40 | 85 | °C | 2 | ||
| Junction-to-Case Thermal Resistance (θJC) | θJC | 2 | °C/W | 16-Pin TQFN | 2 | ||
| Junction-to-Ambient Thermal Resistance (θJA) | θJA | 30 | °C/W | 16-Pin TQFN | 2 |
CAD (KiCad official)
- Symbol:
MAX13237EETE+T - Footprint:
Package_DFN_QFN:QFN-16-1EP_5x5mm_P0.8mm_EP2.7x2.7mm - 3D model: TQFN-16-EP(5x5) (KiCad packages3D, STEP)
- 3D model files:
max13237eete-t-etched.step/max13237eete-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max13237eete-t.step/max13237eete-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (17 pp, sha256
e821624153aa0468, retrieved 2026-10-20, 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).