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SP3491CN-L

Public Made by Adom

by adom

MaxLinear Pre-ordered Chips, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterface icssp3491cn-lfactory-2.0.0extractor-text

Verified SP3491CN-L

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 14 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SP3491CN-L · SOIC-14 · 14 pins
  • ✓copper: 14 copper pads, none touching another net
  • ✓datasheet: all 14 pin names found in the 12-page datasheet
  • ✓distributor: lcsc C2671269, digikey 1016-SP3491CN-L-ND, mouser 701-SP3491CN-L
  • ✓family: SOIC-14_3.9x8.7mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-oy7jv_lq/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 14 pins = 14 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 14 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ sp3491cn-l.kicad_sym✓ sp3491cn-l.kicad_mod✓ sp3491cn-l.step
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Ray Publish 0.1.0 4fd294c 10d ago

SP3491CN-L

MaxLinear · Pre-ordered Chips · SOIC-14

SP3491CN-L from MaxLinear, in a SOIC-14. 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 NC unconnected No connect; not internally bonded, can be connected to Vcc without harm.
2 R output Receiver output; tri-stated when REB is HIGH.
3 REB input Receiver output enable, active LOW; logic LOW enables the receiver and logic HIGH tri-states it.
4 DE input Driver output enable, active HIGH; logic HIGH enables the driver outputs and logic LOW tri-states them.
5 D input Driver input.
6 GND power_in Ground connection.
7 GND power_in Ground connection.
8 NC unconnected No connect; not internally bonded, can be connected to Vcc without harm.
9 Y tri_state Non-inverting driver output, tri-stated when DE is LOW.
10 Z tri_state Inverting driver output, tri-stated when DE is LOW.
11 B input Inverting receiver input with -7V to 12V common-mode range.
12 A input Non-inverting receiver input with -7V to 12V common-mode range.
13 NC unconnected No connect; not internally bonded, can be connected to Vcc without harm.
14 VCC power_in Positive supply, 3.00V < Vcc < 3.60V.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Differential output voltage, RS-422 load VOD 2 V With load; R = 50Ω (RS-422); Figure 1 4
Differential output voltage, RS-485 load VOD 1.5 V With load; R = 27Ω (RS-485); Figure 1 4
Change in magnitude of driver differential output voltage 0.2 V R = 27Ω or R = 50Ω; Figure 1 4
Driver common-mode output voltage VOC 3 V R = 27Ω or R = 50Ω; Figure 1 4
Input high voltage VIH 2 V Applies to DE, D, REB 4
Input low voltage VIL 0.8 V Applies to DE, D, REB 4
Input current IIN -10 10 µA Applies to DE, D, REB 4
Driver short circuit current VOUT = HIGH IOSD -250 250 mA -7V ≤ VO ≤ 12V; Figure 8 4
Driver short circuit current VOUT = LOW IOSD -250 250 mA -7V ≤ VO ≤ 12V; Figure 8 4
Driver maximum data rate 10 Mbps 4
Driver input to output, tPLH tPLH 20 40 60 ns Figures 2 & 9 4
Driver input to output, tPHL tPHL 20 40 60 ns Figures 2 & 9 4
Differential driver skew 2 ns /tPHL(Y)- tPLH(Y)/, /tPHL(Z)- tPLH(Z)/, Figures 2 and 9 4
Driver rise or fall time 5 20 ns From 10%-90%; Figures 3 and 10 4
Driver enable to output HIGH tPZH 52 120 ns Figures 4 and 11 4
Driver enable to output LOW tPZL 60 120 ns Figures 5 and 11 4
Driver disable from LOW tPLZ 40 120 ns Figures 5 and 11 4
Driver disable from HIGH tPHZ 60 120 ns Figures 4 and 11 4
Receiver differential input threshold -0.2 0.2 Volts -7V ≤ VCM ≤ 12V 5
Receiver input hysteresis 25 mV VCM = 0V 5
Receiver output voltage LOW VOL 0.4 Volts VID = -200mV, IO = 2.5mA 5
Three-state (high impedance) output current IOZR -1 1 µA 0V ≤ VO ≤ Vcc; REB = Vcc 5
Receiver input resistance RIN 12 15 kΩ -7V ≤ VCM ≤ 12V 5
Input current (A, B); VIN = 12V IIN 1 mA DE = 0V, VCC = 0V or 3.6V, VIN = 12V 5
Input current (A, B); VIN = -7V IIN -0.8 mA DE = 0V, VCC = 0V or 3.6V, VIN = -7V 5
Receiver short circuit current IOSR 60 mA 0V ≤ VO ≤ VCC 5
Receiver maximum data rate 10 Mbps REB = 0V, DE = 0V 5
Receiver input to output, tPLH tPLH 40 70 120 ns Figures 6 and 12 5
Receiver input to output, tPLH (25°C) tPLH 85 ns TAMB = 25°C, Vcc = 3.3V, Figures 6 and 12 5
Receiver input to output, tPHL tPHL 40 70 120 ns Figures 6 and 12 5
Receiver input to output, tPHL (25°C) tPHL 85 ns TAMB = 25°C, Vcc = 3.3V, Figures 6 and 12 5
Differential receiver skew 4 ns /tPHL(A)- tPLH(A)/, /tPHL(B)- tPLH(B)/, Figures 6 and 12 5
Receiver enable to output LOW tPRZL 65 150 ns Figures 7 and 13; S1 Closed, S2 open 5
Receiver enable to output HIGH tPRZH 65 150 ns Figures 7 and 13; S2 Closed, S1 open 5
Receiver disable from LOW tPRLZ 65 200 ns Figures 7 and 13; S1 Closed, S2 open 5
Receiver disable from HIGH tPRHZ 65 200 ns Figures 7 and 13; S2 Closed, S1 open 5
Supply voltage VCC 3 3.6 V 5
Supply current, driver enabled ICC 1000 2000 µA REB, D = 0V or VCC; DE = VCC 5
Supply current, driver disabled ICC 800 1500 µA DE = 0V 5
ESD protection (HBM) -2 2 kV Human Body Model; R, D, DE, REB, A, B, Y and Z pins 5
Operating temperature range TAMB 0 70 °C SP3491CN-L 12
Supply voltage VCC VCC 6 V 2
Logic input voltage -0.3 6 V Input Voltages, Logic 2
Driver input voltage -0.3 6 V Input Voltages, Drivers 2
Receiver input voltage -14 14 V Input Voltages, Receivers 2
Driver output voltage -14 14 V Output Voltages, Drivers 2
Receiver output voltage -0.3 6 V Output Voltages, Receivers 2
Storage temperature -65 150 °C 2
Thermal resistance, 14-pin NSOIC ΘJA 88.2 °C/W 14-pin NSOIC 2

CAD (KiCad official)

  • Symbol: SP3491CN-L
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: sp3491cn-l-etched.step / sp3491cn-l-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sp3491cn-l.step / sp3491cn-l.glb are the bare package body.

Provenance

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

  • Datasheet: MaxLinear datasheet (12 pp, sha256 53de7ea6a2a264b2, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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