T4
EfinixTrionThe T4 is a Trion FPGA from Efinix, built on a 40 nm process. It provides 3,888 logic elements (LEs) (Efinix does not publish the LUT count for this device), 0.1 Mb of block RAM and 4 18×18 multipliers. It offers up to 55 user I/O pins. It is available in 2 packages, from the FBGA49 (3 × 3 mm) to the FBGA81 (5 × 5 mm). Designs are built with Efinix Efinity.
Specifications
| Vendor | Efinix |
|---|---|
| Family | Trion |
| Series | Trion |
| Process | 40 nm |
| Configuration memory | SRAM |
| LUT4-equivalent capacity | ≈3,888 (from LEs) |
| Look-up tables (LUT4) | Not published |
| LUT note | Efinix only publishes logic elements (LEs) for this device, an equivalent unit that is not a LUT count |
| Logic elements (LEs) | 3,888 |
| Block RAM | 0.1 Mb |
| DSP (18×18 multiplier) | 4 |
| Max. user I/O | 55 |
|---|---|
| Transceivers | None |
| PCI Express | None |
| Analog / monitor | None |
| Design tool | Efinix Efinity |
Packages
| Package | Size (mm) | Pitch (mm) | User I/O | Transceivers |
|---|---|---|---|---|
| FBGA49 | 3 × 3 | 0.4 | 33 | — |
| FBGA81 | 5 × 5 | 0.5 | 55 | — |
Package names are shown as in the selection guide; the full ordering code adds speed grade and temperature (see the data sheet).
Alternatives to the T4
Closest matches in other families and vendors by logic, DSP, memory, I/O and transceivers. Check pin compatibility and tools before migrating.
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| iCE5LP4KLattice iCE40 Ultra | 3.5K 3.5K LUT4 | — | 4 | 0.1 Mb | 39 | — | — |
| iCE5LP2KLattice iCE40 Ultra | 2K 2K LUT4 | — | 4 | 0.1 Mb | 39 | — | — |
| iCE40UP3KLattice iCE40 UltraPlus | 2.8K 2.8K LUT4 | — | 4 | 0.1 Mb | 21 | — | — |
| iCE40UP5KLattice iCE40 UltraPlus | 5.3K 5.3K LUT4 | — | 8 | 0.1 Mb | 39 | — | — |
| XC7S6AMD Spartan-7 | 6K 3.8K LUT6 | 6K LC | 10 | 0.2 Mb | 100 | — | — |
| GW1NS-4Gowin LittleBee | 4.6K 4.6K LUT4 | — | 16 | 0.2 Mb | 106 | — | — |
Compare side by side: T4 vs iCE5LP4K, T4 vs iCE5LP2K, T4 vs iCE40UP3K.
T4 quick facts
How much logic does the T4 have?
Efinix publishes 3,888 logic elements (les) for the T4; it does not publish the LUT count.
How many DSP blocks does the T4 have?
The T4 has 4 18×18 multipliers and 0.1 Mb of block RAM.
Does the T4 have transceivers?
No, the T4 has no multi-gigabit transceivers. Its user I/O supports up to 55 pins.
What are the alternatives to the T4?
Devices of similar size in other families include iCE5LP4K (Lattice iCE40 Ultra), iCE5LP2K (Lattice iCE40 Ultra), iCE40UP3K (Lattice iCE40 UltraPlus).
Which software is used to design with the T4?
Designs for the T4 are built with Efinix Efinity.
Other Trion devices
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| T4 | ≈3.9K 3.9K LEs | 3.9K LE | 4 | 0.1 Mb | 55 | — | — |
| T8 | ≈7.4K 7.4K LEs | 7.4K LE | 8 | 0.1 Mb | 97 | — | — |
| T13 | ≈12.8K 12.8K LEs | 12.8K LE | 24 | 0.7 Mb | 195 | — | — |
| T20 | ≈19.7K 19.7K LEs | 19.7K LE | 36 | 1 Mb | 230 | — | — |
| T35 | ≈31.7K 31.7K LEs | 31.7K LE | 120 | 1.4 Mb | 230 | — | — |
| T55 | ≈54.2K 54.2K LEs | 54.2K LE | 150 | 2.7 Mb | 278 | — | — |
| T85 | ≈84.1K 84.1K LEs | 84.1K LE | 240 | 4 Mb | 278 | — | — |
| T120 | ≈112K 112K LEs | 112K LE | 320 | 5.3 Mb | 278 | — | — |
Source: Efinix Trion product page and device data sheets, retrieved 2026-10-24. Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.