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DS34C87TMX

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Texas Instruments RS-485 / RS-422 ICs, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DS34C87TMX

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ds34c87tmx.step / ds34c87tmx.glb are 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, 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