TPT75176HL1-SO1R from 3PEAK, 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	R	output	Receiver output. CMOS logic level output of the RS-485 differential receiver; typically drives >25 mA at V_OL=1V. High when V_ID = V_A - V_B > V_IT+ (typ -40 mV), low when V_ID < V_IT- (typ -155 mV). High-Z when /RE is high.
2	/RE	input	Receiver enable, active low. Drive low to enable the receiver output R; drive high or leave open to place R in high-impedance. Logic thresholds V_IH ≥ 2V, V_IL ≤ 0.8V.
3	DE	input	Driver enable, active high. Drive high to enable the differential driver outputs A and B; drive low or leave open to place A/B in high-impedance. Logic thresholds V_IH ≥ 2V, V_IL ≤ 0.8V.
4	D	input	Driver data input. Logic-level input sampled by the driver: when DE is high, D=high drives A high/B low, D=low drives A low/B high. Left open, the internal fail-safe drives the bus high when DE=H.
5	GND	power_in	Ground reference (0 V) for the device.
6	A	bidirectional	Non-inverting differential bus I/O (RS-485 A line). Driver output when DE=high (paired with B); receiver non-inverting input otherwise. Withstands -7V to +12V common mode, ±15kV HBM / ±15kV IEC ESD, and ±100V transient through 100Ω.
7	B	bidirectional	Inverting differential bus I/O (RS-485 B line). Driver output when DE=high (paired with A); receiver inverting input otherwise. Withstands -7V to +12V common mode, ±15kV HBM / ±15kV IEC ESD, and ±100V transient through 100Ω.
8	VCC	power_in	Supply voltage input, 3.0 V to 5.5 V. Quiescent supply current typ 1.65 mA (both driver and receiver disabled), up to ~2.2 mA when enabled. Bypass with a 0.1 µF ceramic close to the pin.

Key specifications

Parameter	Value
Manufacturer	3PEAK
Package	SOP-8
Category	Logic
Pins	8

Ordering variants

Same part, different packaging or reel option.

TPT75176HL1-SO1R
TPT75176H-VS1R
TPT75176HL1-DF6R

CAD (KiCad official)

Symbol: TPT75176HL1-SO1R
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tpt75176hl1-so1r.step`	122 KB	You want the bare part, or you mark your own boards.
`tpt75176hl1-so1r-etched.step`	2.4 MB	You want the part with `TPT75176HL1-SO1R` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 613 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: 3PEAK datasheet (17 pp, sha256 1b99611330e77256, retrieved 2026-08-17, tier: lcsc)
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