component

SN75176M

Public Unreviewed

by Ray

HGSEMI RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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SN75176M

HGSEMI · RS-485 / RS-422 ICs · SOP-8

SN75176M from HGSEMI, in a SOP-8. 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 RO output Receiver output. When /RE is low: RO = high if (A-B) ≥ -50 mV, RO = low if (A-B) ≤ -200 mV. When /RE is high RO is high-impedance. Fail-safe drives RO high when the bus is open or shorted.
2 /RE input Receiver output enable, active low. RO is enabled when /RE = low and Hi-Z when /RE = high. If /RE = high and DE = low, the device enters low-power shutdown mode (I_SHDN ≈ 20 µA typ).
3 DE input Driver output enable, active high. When DE = high the differential driver drives A/B; when DE = low the driver outputs are high-impedance. /RE = high together with DE = low puts the device in shutdown.
4 DI input Driver (transmit) data input. With DE = high, DI = low forces A low / B high, and DI = high forces A high / B low. V_IH ≥ 2.0 V, V_IL ≤ 0.8 V, hysteresis ~100 mV.
5 GND power_in Device ground reference for both driver and receiver.
6 A bidirectional Non-inverting differential bus pin. Serves as the non-inverting receiver input and the non-inverting driver output on the RS-485 bus. ±8 kV IEC 61000-4-2 contact / air ESD protected; withstands ±13 V common-mode.
7 B bidirectional Inverting differential bus pin. Serves as the inverting receiver input and the inverting driver output on the RS-485 bus. ±8 kV IEC 61000-4-2 contact / air ESD protected; withstands ±13 V common-mode.
8 VCC power_in Positive supply rail, 4.5 V ≤ VCC ≤ 5.5 V (7 V absolute max). Bypass with a 0.1 µF ceramic near the pin. Typical Icc ≈ 500 µA, shutdown ≈ 20 µA.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • SN75176M/TR
  • SN75176MSN65176M/TR
  • SN75176N
  • SN75176MSN65176N
  • SN75176MM/TR
  • SN75176MSN65176MM/TR

CAD (KiCad official)

  • Symbol: SN75176M
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (13 pp, sha256 8e5fdac042fb5787, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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