component
GT4899QE
Public Unreviewedby Ray
GTIC Analog Switches, Multiplexers, QFN-16L-EP(3x3). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownGT4899QE
GTIC · Analog Switches, Multiplexers · QFN-16L-EP(3x3)
GT4899QE from GTIC, in a QFN-16L-EP(3x3). 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 | NC1 | passive | Normally-closed terminal of switch 1. Connected to COM1 when IN1-2 = 0. Analog signal range 0 to VCC. |
| 2 | IN1-2 | input | Digital logic select input controlling both switch 1 and switch 2. IN1-2=0 routes NC1↔COM1 and NC2↔COM2; IN1-2=1 routes NO1↔COM1 and NO2↔COM2. TTL/CMOS compatible (VINH ≥ 1.8 V at VCC=4.5V). |
| 3 | NO2 | passive | Normally-open terminal of switch 2. Connected to COM2 when IN1-2 = 1. Analog signal range 0 to VCC. |
| 4 | COM2 | passive | Common terminal of switch 2. Bidirectional analog port that routes to either NC2 or NO2 depending on IN1-2. |
| 5 | NC2 | passive | Normally-closed terminal of switch 2. Connected to COM2 when IN1-2 = 0. Analog signal range 0 to VCC. |
| 6 | GND | power_in | Ground reference. Connect to system ground. |
| 7 | NO3 | passive | Normally-open terminal of switch 3. Connected to COM3 when IN3-4 = 1. Analog signal range 0 to VCC. |
| 8 | COM3 | passive | Common terminal of switch 3. Bidirectional analog port that routes to either NC3 or NO3 depending on IN3-4. |
| 9 | NC3 | passive | Normally-closed terminal of switch 3. Connected to COM3 when IN3-4 = 0. Analog signal range 0 to VCC. |
| 10 | IN3-4 | input | Digital logic select input controlling both switch 3 and switch 4. IN3-4=0 routes NC3↔COM3 and NC4↔COM4; IN3-4=1 routes NO3↔COM3 and NO4↔COM4. TTL/CMOS compatible. |
| 11 | NO4 | passive | Normally-open terminal of switch 4. Connected to COM4 when IN3-4 = 1. Analog signal range 0 to VCC. |
| 12 | COM4 | passive | Common terminal of switch 4. Bidirectional analog port that routes to either NC4 or NO4 depending on IN3-4. |
| 13 | NC4 | passive | Normally-closed terminal of switch 4. Connected to COM4 when IN3-4 = 0. Analog signal range 0 to VCC. |
| 14 | VCC | power_in | Supply voltage input. Operating range 1.65 V to 5.5 V (absolute max 6.0 V). Bypass to GND with a 0.1 µF ceramic capacitor near the pin. |
| 15 | NO1 | passive | Normally-open terminal of switch 1. Connected to COM1 when IN1-2 = 1. Analog signal range 0 to VCC. |
| 16 | COM1 | passive | Common terminal of switch 1. Bidirectional analog port that routes to either NC1 or NO1 depending on IN1-2. |
| 17 | EP | passive | Exposed thermal pad on the underside of the QFN3x3-16L package (center pad, labeled '17' in Fig.5-1). Recommend soldering to the PCB ground plane for mechanical stability and thermal dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GTIC |
| Package | QFN-16L-EP(3x3) |
| Category | Interface |
| Pins | 17 |
Ordering variants
Same part, different packaging or reel option.
GT4899QEGT4899QEUE
CAD (KiCad official)
- Symbol:
GT4899QE - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16L-EP(3x3) (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
gt4899qe.step |
190 KB | You want the bare part, or you mark your own boards. |
gt4899qe-etched.step |
1.9 MB | You want the part with GT4899QE already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 458 faces against 110 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: GTIC datasheet (13 pp, sha256
d87b129b42a0dd9a, 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).