

Qx10 titan clone
Epson QX-10 Files
- Size
- 281 × 79 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 163
- Pads
- 526
- Tracks, vias
- 2,564, 209
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Jul 2021
- Updated
- 1 Sep 2026
Overview
Qx10 titan clone is an open-source printed circuit board by brijohn, from the brijohn/qx10 repository on GitHub. It is a 2-layer board of 281 × 79 mm with 50 parts on 163 nets, routed with 2,564 tracks and 209 vias.
It is built around the 74LS373SC, 74LS245SC and 74LS74PC, with the 74LS04PC, 74LS21PC and AS6C4008-55PCN among its other parts. Its parts include 22 capacitors, 20 ICs, 3 resistors, 1 connector and 1 crystal. It belongs with the FPGA and CPLD boards of this library.
Main components
774LS373SC
--55℃~+125℃ 1 2.6mA 24mA 38ns@5V,150pF 4.75V~5.25V 74LS 8 Output enable Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers74LS245SC
-0℃~+70℃ 12ns@5V,45pF 15mA 24mA 4.75V~5.25V 74LS 8 Bidirectional Output enable Schmitt trigger Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers74LS74PC
DIP-140ns 0℃~+70℃ 1 2 20MHz 3.5pF 35ns@5V,50pF 4.5ns 4.75V~5.25V 400uA 74LS Series 8mA 8mA Asynchronous Complementary D-Type Rising Edge Set and Reset DIP-14 Flip FlopsTexas InstrumentsFlip Flops74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters74LS21PC
DIP-140℃~+70℃ 18ns@5V,50pF 2 2.7V~3.4V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA AND Gate DIP-14 Logic Gates ROHSonsemiLogic GatesAS6C4008-55PCN
PDIP-320℃~+70℃ 2.7V~5.5V 30mA 4Mbit 4uA 55ns Parallel Port (Parallel) PDIP-32 SRAM ROHSAlliance MemorySRAMCP82C84A
PDIP-180℃~+70℃ 2 25MHz 4.5V~5.5V External Not supported Output synchronization and phase alignment TTL TTL PDIP-18 Clock Generators, PLLs, Frequency SynthesizersRenesas ElectronicsJitter Attenuators
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | 0.1uf | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C3, C4, C5, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20 +4 |
| 6 | 74LS373 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U4, U5, U13, U14, U16, U17 |
| 3 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
| 2 | 30pf | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C21, C22 |
| 2 | 74LS74 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U10, U11 |
| 2 | GAL16V8 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U15, U19 |
| 2 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 1 | 15 MHZ | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | 28C64 | Package_DIP:DIP-28_W15.24mm_Socket_LongPads | U6 |
| 1 | 4.7k | Resistor_THT:R_Array_SIP8 | RN1 |
| 1 | 74F08 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U8 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U7 |
| 1 | 74LS21 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U9 |
| 1 | 74LS244 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U12 |
| 1 | 74LS245 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U1 |
| 1 | 74LS75 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U3 |
| 1 | 8088 | Package_DIP:DIP-40_W15.24mm_Socket_LongPads | U20 |
| 1 | AS6C4008-55PCN | Package_DIP:DIP-32_W15.24mm_Socket_LongPads | U2 |
| 1 | CP82C84 | Package_DIP:DIP-18_W7.62mm_Socket_LongPads | U18 |
| 1 | Edge Connector | qx10:BUS_QX10 | CN1 |
More from brijohn/qx10
8- 2 layers281 × 79 mm

- 2 layers254 × 63.5 mm

- 2 layers281 × 79 mm

- 2 layers281 × 79 mm

- 2 layers281 × 79 mm

- 2 layers281 × 79 mm

- 2 layers88.5 × 34 mm

- 2 layers281 × 79 mm

Similar boards
- 6 layers244 × 244 mm

Retroslop
CPTforever/8088-MicroATX-Computer
A 8088 based, IBM 5150 like computer compatible with the MicroATX motherboard form factor.
193 parts - 4 layers253.6 × 137.7 mm

S100 Thunder186-1.0-006
RichCini/LomasBoards
Small repository of files/data related to Lomas Data Products S-100 boards.
118 parts1 - 4 layers236.8 × 240.9 mm

DIY Video
jimbro1000/DIY-Video
General purpose video system for 8-bit computers using 74LS logic
315 parts1 - 4 layers340 × 210 mm

- 2 layers253.2 × 203 mm

Pegasus2023
NeilsVintageComputers/1981_Aamber-Pegasus-2023-Revival
My first computer, this is a replica I produced from the original schematics using original old components.
156 partsUnlicense - 2 layers365.1 × 203.2 mm

DIAG
Nakazoto/CenturionComputer
This is just a simple backup of all the files related to the Centurion that I have stored on my HD. The Wiki itself has far more in-depth information about the Centurion and it's individual cards.
150 parts172 - 4 layers241.8 × 174.8 mm

- 2 layers350 × 224.3 mm

Questions
How big is the Qx10 titan clone PCB?
It measures 281 × 79 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Qx10 titan clone use?
50 parts, built around the 74LS373SC, 74LS245SC, 74LS74PC and 74LS04PC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Qx10 titan clone KiCad files?
From the brijohn/qx10 repository on GitHub, at the commit this page was made from: the board is kicad/qx10_titan_clone/qx10_titan_clone.kicad_pcb and its schematic kicad/cf_adapter/qx_10_cf_adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Qx10 titan clone design in my own project?
Its repository states no licence, so its author keeps all rights: ask brijohn before reusing the design.