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TRSF3232EIDR

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by Ray

Texas Instruments RS232 ICs, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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TRSF3232EIDR

Texas Instruments · RS232 ICs · SOIC-16

TRSF3232EIDR from Texas Instruments, in a SOIC-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 C1+ passive Positive lead of the C1 charge-pump flying capacitor. Connect a 0.1µF ceramic capacitor between C1+ and C1- (0.047µF at VCC=3.3V or 0.33µF at VCC=5V per app conditions).
2 V+ power_out Positive charge-pump output for storage capacitor only (approximately +2×VCC). Connect a 0.1µF storage capacitor from V+ to GND. Absolute-max range -0.3V to 7V.
3 C1- passive Negative lead of the C1 charge-pump flying capacitor. Paired with C1+ (pin 1).
4 C2+ passive Positive lead of the C2 charge-pump flying capacitor. Connect a 0.1µF ceramic capacitor between C2+ and C2-.
5 C2- passive Negative lead of the C2 charge-pump flying capacitor. Paired with C2+ (pin 4).
6 V- power_out Negative charge-pump output for storage capacitor only (approximately -2×VCC). Connect a 0.1µF storage capacitor from V- to GND. Absolute-max range 0.3V to -7V.
7 DOUT2 output RS-232 line data output for channel 2 (to remote RS-232 system). Driven from DIN2; swings between V- and V+. ±15kV IEC 61000-4-2 air-gap and ±8kV contact ESD protected.
8 RIN2 input RS-232 line data input for channel 2 (from remote RS-232 system). Accepts -25V to +25V, internal 5kΩ pulldown to GND. ±15kV IEC 61000-4-2 air-gap and ±8kV contact ESD protected.
9 ROUT2 output Logic-level data output for channel 2 (to UART). CMOS output derived from RIN2, swings between GND and VCC.
10 DIN2 input Logic-level data input for channel 2 (from UART). Accepts 5V logic even with 3.3V supply (0V to 5.5V input range). VIH = 2V at VCC=3.3V, 2.4V at VCC=5V; VIL = 0.8V.
11 DIN1 input Logic-level data input for channel 1 (from UART). Accepts 5V logic even with 3.3V supply (0V to 5.5V input range). VIH = 2V at VCC=3.3V, 2.4V at VCC=5V; VIL = 0.8V.
12 ROUT1 output Logic-level data output for channel 1 (to UART). CMOS output derived from RIN1, swings between GND and VCC.
13 RIN1 input RS-232 line data input for channel 1 (from remote RS-232 system). Accepts -25V to +25V, internal 5kΩ pulldown to GND. ±15kV IEC 61000-4-2 air-gap and ±8kV contact ESD protected.
14 DOUT1 output RS-232 line data output for channel 1 (to remote RS-232 system). Driven from DIN1; swings between V- and V+. ±15kV IEC 61000-4-2 air-gap and ±8kV contact ESD protected.
15 GND power_in Device ground and network reference for all supplies. Datasheet 'GRD' label; all voltages are with respect to network GND.
16 VCC power_in Positive supply voltage input. Connect to an external 3V to 5.5V power supply. A 1µF bypass capacitor between VCC and GND is required to meet the specified IEC ESD level for the D/PW/RGT packages.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-16
Category Comm/UART
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • TRSF3232EIDR
  • TRSF3232EIDRIDB
  • TRSF3232EIDRIDBR
  • TRSF3232EIDRIDW
  • TRSF3232EIDRIDWR
  • TRSF3232EIDRIPW
  • TRSF3232EIDRIPWR
  • TRSF3232EIDRIRGTR
  • TRSF3232EIDRIRGTT
  • TRSF3232EIDRIDYYR

CAD (KiCad official)

  • Symbol: TRSF3232EIDR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (40 pp, sha256 e2825022423aa73b, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF