SP3070EEN-L from MaxLinear, in a SOIC-14. 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	NC	unconnected	No internal connection. Leave floating or tie to GND.
2	RO	output	Receiver output. CMOS logic-level output reflecting the state of the A-B differential receiver. Failsafe logic-high when inputs are open, shorted, or terminated with no driver active. High-impedance when RE is deasserted (high).
3	RE	input	Receiver Enable, active low. Drive low to enable the receiver output RO; drive high to place RO in high-impedance (Hi-Z). Combined with DE=0 places the part in low-power shutdown mode.
4	DE	input	Driver Enable, active high. Drive high to enable the differential driver outputs Y/Z; drive low to place Y/Z in high-impedance. Combined with RE=1 places the part in low-power shutdown mode.
5	DI	input	Driver input. CMOS logic input; drives the differential output Y/Z when DE is asserted. VIH ≥ 2V, VIL ≤ 0.8V.
6	GND	power_in	Ground reference for logic and bus signals. Tie together with pin 7.
7	GND	power_in	Ground reference for logic and bus signals. Tie together with pin 6.
8	NC	unconnected	No internal connection. Leave floating or tie to GND.
9	Y	output	Non-inverting differential driver output (RS-485/RS-422 bus line Y). High-impedance when DE is low. ±15kV ESD-protected (Air-Gap and HBM), ±8kV IEC 61000-4-2 Contact.
10	Z	output	Inverting differential driver output (RS-485/RS-422 bus line Z). High-impedance when DE is low. ±15kV ESD-protected on the bus interface.
11	B	input	Inverting differential receiver input (RS-485/RS-422 bus line B). Common-mode range −7V to +12V. Receiver differential threshold −200mV to −50mV; 96kΩ minimum input resistance (1/8 unit load). ±15kV ESD-protected.
12	A	input	Non-inverting differential receiver input (RS-485/RS-422 bus line A). Common-mode range −7V to +12V. 1/8 unit-load high input impedance allows up to 256 transceivers on the bus. ±15kV ESD-protected.
13	NC	unconnected	No internal connection. Leave floating or tie to GND.
14	VCC	power_in	3.3V supply input. Operating range +3.0V to +3.6V; absolute max +6.0V. Typical supply current 0.8mA (1.5mA max), 0.05μA typical in shutdown. Bypass with 0.1μF close to the pin.

Key specifications

Parameter	Value
Manufacturer	MaxLinear
Package	SOIC-14
Category	Interface
Pins	14

Ordering variants

Same part, different packaging or reel option.

SP3070EEN-L
SP3071E
SP3074E
SP3077E
SP3072E
SP3075E
SP3078E

CAD (KiCad official)

Symbol: SP3070EEN-L
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sp3070een-l.step`	195 KB	You want the bare part, or you mark your own boards.
`sp3070een-l-etched.step`	2.4 MB	You want the part with `SP3070EEN-L` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 595 faces against 237 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: MaxLinear datasheet (20 pp, sha256 860dab706abedb6e, retrieved 2026-08-17, tier: manufacturer)
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