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DS34C87TMX
Public Made by Adomby adom
Texas Instruments RS-485 / RS-422 ICs, SOIC-16. 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
markdownDS34C87TMX
Texas Instruments · RS-485 / RS-422 ICs · SOIC-16
DS34C87TMX from Texas Instruments, in a SOIC-16. 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 | INPUT A | input | Channel A TTL/CMOS data input for the RS-422 differential line driver. |
| 2 | OUTPUT A - True | output | True RS-422 differential output for Channel A, which goes to TRI-STATE when the A/B control is low. |
| 3 | OUTPUT A - Inverting | output | Inverting RS-422 differential output for Channel A, which goes to TRI-STATE when the A/B control is low. |
| 4 | A/B CONTROL | input | Active-high TTL/CMOS enable for Channels A and B; a low level places their outputs in TRI-STATE. |
| 5 | OUTPUT B - Inverting | output | Inverting RS-422 differential output for Channel B, which goes to TRI-STATE when the A/B control is low. |
| 6 | OUTPUT B - True | output | True RS-422 differential output for Channel B, which goes to TRI-STATE when the A/B control is low. |
| 7 | INPUT B | input | Channel B TTL/CMOS data input for the RS-422 differential line driver. |
| 8 | GND | power_in | Ground pin (0 V) and reference for the device. |
| 9 | INPUT C | input | Channel C TTL/CMOS data input for the RS-422 differential line driver. |
| 10 | OUTPUT C - True | output | True RS-422 differential output for Channel C, which goes to TRI-STATE when the C/D control is low. |
| 11 | OUTPUT C - Inverting | output | Inverting RS-422 differential output for Channel C, which goes to TRI-STATE when the C/D control is low. |
| 12 | C/D CONTROL | input | Active-high TTL/CMOS enable for Channels C and D; a low level places their outputs in TRI-STATE. |
| 13 | OUTPUT D - Inverting | output | Inverting RS-422 differential output for Channel D, which goes to TRI-STATE when the C/D control is low. |
| 14 | OUTPUT D - True | output | True RS-422 differential output for Channel D, which goes to TRI-STATE when the C/D control is low. |
| 15 | INPUT D | input | Channel D TTL/CMOS data input for the RS-422 differential line driver. |
| 16 | VCC | power_in | Power supply pin, 5.0 V typical (operating range 4.50 V to 5.50 V per the operating conditions). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
DS34C87TMX - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
ds34c87tmx-etched.step/ds34c87tmx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds34c87tmx.step/ds34c87tmx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (14 pp, sha256
882c91d47fea0970, retrieved 2026-10-08, 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).