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MAX3238EIDB

Public Made by Adom

by adom

Texas Instruments RS232 ICs, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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MAX3238EIDB

Texas Instruments · RS232 ICs · SSOP-28-208mil

MAX3238EIDB from Texas Instruments, in a SSOP-28-208mil. 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 C2+ passive Positive terminal of charge-pump capacitor C2 (external capacitor between C2+ and C2−).
2 GND power_in Ground; all device voltages are specified with respect to network GND.
3 C2− passive Negative terminal of charge-pump capacitor C2 (external capacitor between C2+ and C2−).
4 V− power_out Negative charge-pump output supply, with an external capacitor C4; absolute maximum range is 0.3 to −7 V.
5 DOUT1 output RS-232 driver 1 output with ±15-kV HBM ESD protection; high impedance when powered off.
6 DOUT2 output RS-232 driver 2 output with ±15-kV HBM ESD protection; high impedance when powered off.
7 DOUT3 output RS-232 driver 3 output with ±15-kV HBM ESD protection; high impedance when powered off.
8 RIN1 input RS-232 receiver 1 input with ±15-kV HBM ESD protection; 3 kΩ to 7 kΩ input resistance, ±25 V input range.
9 RIN2 input RS-232 receiver 2 input with ±15-kV HBM ESD protection; 3 kΩ to 7 kΩ input resistance, ±25 V input range.
10 DOUT4 output RS-232 driver 4 output with ±15-kV HBM ESD protection; high impedance when powered off.
11 RIN3 input RS-232 receiver 3 input with ±15-kV HBM ESD protection; 3 kΩ to 7 kΩ input resistance, ±25 V input range.
12 DOUT5 output RS-232 driver 5 output with ±15-kV HBM ESD protection; high impedance when powered off.
13 FORCEON input Logic input; high with FORCEOFF high disables auto-powerdown plus, low with FORCEOFF high enables it (VIH min 2 V at 3.3 V, 2.4 V at 5 V; VIL max 0.8 V).
14 FORCEOFF input Logic input; low powers off the drivers and charge pump (ROUT1B stays active), high allows normal operation (VIL max 0.8 V).
15 INVALID output Output that is high if any receiver input is above 2.7 V or below −2.7 V, or has been within ±0.3 V for less than 30 µs; low when all receiver inputs stay between −0.3 V and 0.3 V for more than 30 µs.
16 ROUT1B output Always-active noninverting receiver 1 output that remains active while the device is powered down (for ring-indicator use).
17 DIN5 input Driver 5 logic input; accepts 5-V logic with a 3.3-V supply.
18 ROUT3 output Receiver 3 logic output; high impedance when FORCEOFF is low.
19 DIN4 input Driver 4 logic input; accepts 5-V logic with a 3.3-V supply.
20 ROUT2 output Receiver 2 logic output; high impedance when FORCEOFF is low.
21 ROUT1 output Receiver 1 logic output; high impedance when FORCEOFF is low.
22 DIN3 input Driver 3 logic input; accepts 5-V logic with a 3.3-V supply.
23 DIN2 input Driver 2 logic input; accepts 5-V logic with a 3.3-V supply.
24 DIN1 input Driver 1 logic input; accepts 5-V logic with a 3.3-V supply.
25 C1− passive Negative terminal of charge-pump capacitor C1 (external capacitor between C1+ and C1−).
26 VCC power_in Supply voltage input, 3 V to 5.5 V (absolute maximum 6 V), with a 0.1 µF bypass capacitor.
27 V+ power_out Positive charge-pump output supply, with an external capacitor C3; absolute maximum range is −0.3 to 7 V.
28 C1+ passive Positive terminal of charge-pump capacitor C1 (external capacitor between C1+ and C1−).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-28-208mil
Category Interface
Pins 28

CAD (KiCad official)

  • Symbol: MAX3238EIDB
  • Footprint: Package_SO:SSOP-28_5.3x10.2mm_P0.65mm
  • 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
  • 3D model files: max3238eidb-etched.step / max3238eidb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3238eidb.step / max3238eidb.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (23 pp, sha256 1d519ae7a9e53f86, retrieved 2026-10-08, 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