TPT487L1-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. Digital CMOS output; drives high (VOH ≥ VCC-0.3V at IOH=-8mA) when bus differential A-B > -50mV, low (VOL ≤ 0.4V at IOL=8mA) when A-B < -200mV. High-impedance when /RE is high.
2	/RE	input	Receiver Output Enable (active-low). Digital input; drive low to enable the receiver output R; drive high to place R into high-impedance. Default receiver-disabled when floating.
3	DE	input	Driver Output Enable (active-high). Digital input; drive high to enable the RS-485 driver onto bus pins A/B; drive low or leave floating to disable the driver (bus pins high-Z).
4	D	input	Driver Input. Digital CMOS input carrying the transmit data; when DE is high, D=high drives bus A high/B low, D=low drives A low/B high. Defaults to driving bus high when D is open.
5	GND	power_in	Ground reference (0 V) for both logic and bus circuitry.
6	A	bidirectional	Noninverting Receiver Input A and Noninverting Driver Output A. RS-485 differential bus line; withstands -15V to +15V as receiver/idle and -8V to +13V as driver. Bus-pin ESD ±18kV HBM / ±15kV IEC61000-4-2 contact.
7	B	bidirectional	Inverting Receiver Input B and Inverted Driver Output B. RS-485 differential bus line; withstands -15V to +15V as receiver/idle and -8V to +13V as driver. Bus-pin ESD ±18kV HBM / ±15kV IEC61000-4-2 contact.
8	VCC	power_in	Power Supply, 3.0V to 5.5V. Quiescent current 650µA typ (both driver and receiver enabled, no load); 0.5µA typ with both disabled. Decouple to GND 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.

TPT487L1-SO1R
TPT487-VS1R
TPT487L1-DF6R

CAD (KiCad official)

Symbol: TPT487L1-SO1R
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: 3PEAK datasheet (12 pp, sha256 a85a1fd792f38b3e, 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