component
SN75LP1185DBR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SSOP-20-208mil. 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
markdownSN75LP1185DBR
Texas Instruments · RS232 ICs · SSOP-20-208mil
SN75LP1185DBR from Texas Instruments, 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 | VDD | power_in | Positive supply voltage, recommended 9 V to 15 V (12 V nominal) and absolute maximum 15 V; VCC cannot be greater than VDD. |
| 2 | RA1 | input | Receiver input with recommended input voltage of ±25 V and absolute maximum input voltage range of ±30 V. |
| 3 | RA2 | input | Receiver input with recommended input voltage of ±25 V and absolute maximum input voltage range of ±30 V. |
| 4 | RA3 | input | Receiver input with recommended input voltage of ±25 V and absolute maximum input voltage range of ±30 V. |
| 5 | DY1 | output | Driver output, nominally clamped to ±6 V and able to withstand voltages up to ±15 V without damage. |
| 6 | DY2 | output | Driver output, nominally clamped to ±6 V and able to withstand voltages up to ±15 V without damage. |
| 7 | RA4 | input | Receiver input with recommended input voltage of ±25 V and absolute maximum input voltage range of ±30 V. |
| 8 | DY3 | output | Driver output, nominally clamped to ±6 V and able to withstand voltages up to ±15 V without damage. |
| 9 | RA5 | input | Receiver input with recommended input voltage of ±25 V and absolute maximum input voltage range of ±30 V. |
| 10 | VSS | power_in | Negative supply voltage, recommended -9 V to -15 V (-12 V nominal) and absolute maximum -15 V. |
| 11 | GND | power_in | Network ground terminal, the reference for all device voltage values. |
| 12 | RY5 | output | Receiver logic output with IOH limit of -1 mA, IOL limit of 2 mA, and output voltage range of -0.5 V to 6 V. |
| 13 | DA3 | input | Driver logic input with VIH minimum of 2 V and VIL maximum of 0.8 V. |
| 14 | RY4 | output | Receiver logic output with IOH limit of -1 mA, IOL limit of 2 mA, and output voltage range of -0.5 V to 6 V. |
| 15 | DA2 | input | Driver logic input with VIH minimum of 2 V and VIL maximum of 0.8 V. |
| 16 | DA1 | input | Driver logic input with VIH minimum of 2 V and VIL maximum of 0.8 V. |
| 17 | RY3 | output | Receiver logic output with IOH limit of -1 mA, IOL limit of 2 mA, and output voltage range of -0.5 V to 6 V. |
| 18 | RY2 | output | Receiver logic output with IOH limit of -1 mA, IOL limit of 2 mA, and output voltage range of -0.5 V to 6 V. |
| 19 | RY1 | output | Receiver logic output with IOH limit of -1 mA, IOL limit of 2 mA, and output voltage range of -0.5 V to 6 V. |
| 20 | VCC | power_in | Logic supply voltage, recommended 4.75 V to 5.25 V (5 V nominal), and must not exceed VDD. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-20-208mil |
| Category | Interface |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN75LP1185DBR - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
sn75lp1185dbr-etched.step/sn75lp1185dbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn75lp1185dbr.step/sn75lp1185dbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (19 pp, sha256
cd9ab4e418800e26, retrieved 2026-10-07, 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).