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MAX3238CDBR

Public Made by Adom

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

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MAX3238CDBR

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

MAX3238CDBR 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, which connects between C2+ and C2−; the capacitor value depends on VCC per the table on page 10.
2 GND power_in Network ground; all device voltages are referenced to this pin.
3 C2− passive Negative terminal of charge-pump capacitor C2, connected to C2+.
4 V− power_out Negative charge-pump output supply; the absolute maximum range is printed as 0.3 V to −7 V with respect to network GND.
5 DOUT1 output RS-232 driver 1 output, with output voltage range −13.2 V to 13.2 V and high impedance when powered off.
6 DOUT2 output RS-232 driver 2 output, with output voltage range −13.2 V to 13.2 V and high impedance when powered off.
7 DOUT3 output RS-232 driver 3 output, with output voltage range −13.2 V to 13.2 V and high impedance when powered off.
8 RIN1 input RS-232 receiver 1 input, rated −25 V to 25 V with input resistance of 3 kΩ to 7 kΩ.
9 RIN2 input RS-232 receiver 2 input, rated −25 V to 25 V with input resistance of 3 kΩ to 7 kΩ.
10 DOUT4 output RS-232 driver 4 output, with output voltage range −13.2 V to 13.2 V and high impedance when powered off.
11 RIN3 input RS-232 receiver 3 input, rated −25 V to 25 V with input resistance of 3 kΩ to 7 kΩ.
12 DOUT5 output RS-232 driver 5 output, with output voltage range −13.2 V to 13.2 V and high impedance when powered off.
13 FORCEON input Auto-powerdown plus control: auto-powerdown plus is active when FORCEON is low and FORCEOFF is high, and disabled when both are high; input range 0 V to 5.5 V.
14 FORCEOFF input Active-low driver shutdown: when low, drivers and charge pump are powered off with outputs in high impedance; input range 0 V to 5.5 V.
15 INVALID output Output high when any receiver input is valid (above 2.7 V or below −2.7 V), and low when all receiver inputs stay between −0.3 V and 0.3 V for more than 30 µs; VOH is VCC − 0.6 V minimum.
16 ROUT1B output Always-active noninverting receiver output (RIN1 to ROUT1B) that remains active when the device is powered off by FORCEOFF.
17 DIN5 input Driver 5 logic input with VIH of 2 V (VCC = 3.3 V) or 2.4 V (VCC = 5 V), VIL 0.8 V maximum, and input range 0 V to 5.5 V.
18 ROUT3 output CMOS receiver 3 output, with VOH of VCC − 0.6 V minimum at −1 mA and VOL 0.4 V maximum at 1.6 mA.
19 DIN4 input Driver 4 logic input with VIH of 2 V (VCC = 3.3 V) or 2.4 V (VCC = 5 V), VIL 0.8 V maximum, and input range 0 V to 5.5 V.
20 ROUT2 output CMOS receiver 2 output, with VOH of VCC − 0.6 V minimum at −1 mA and VOL 0.4 V maximum at 1.6 mA.
21 ROUT1 output CMOS receiver 1 output, with VOH of VCC − 0.6 V minimum at −1 mA and VOL 0.4 V maximum at 1.6 mA.
22 DIN3 input Driver 3 logic input with VIH of 2 V (VCC = 3.3 V) or 2.4 V (VCC = 5 V), VIL 0.8 V maximum, and input range 0 V to 5.5 V.
23 DIN2 input Driver 2 logic input with VIH of 2 V (VCC = 3.3 V) or 2.4 V (VCC = 5 V), VIL 0.8 V maximum, and input range 0 V to 5.5 V.
24 DIN1 input Driver 1 logic input with VIH of 2 V (VCC = 3.3 V) or 2.4 V (VCC = 5 V), VIL 0.8 V maximum, and input range 0 V to 5.5 V.
25 C1− passive Negative terminal of charge-pump capacitor C1, connected to C1+.
26 VCC power_in Supply voltage, 3 V to 5.5 V recommended operating range, bypassed with 0.1 µF per the typical circuit.
27 V+ power_out Positive charge-pump output supply; the absolute maximum range is −0.3 V to 7 V with respect to network GND.
28 C1+ passive Positive terminal of charge-pump capacitor C1, which connects between C1+ and C1−; the capacitor value depends on VCC per the table on page 10.

Key specifications

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

CAD (KiCad official)

  • Symbol: MAX3238CDBR
  • Footprint: Package_SO:SSOP-28_5.3x10.2mm_P0.65mm
  • 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
  • 3D model files: max3238cdbr-etched.step / max3238cdbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3238cdbr.step / max3238cdbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (19 pp, sha256 eac40e856c766465, 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