4 layers304.5 × 217.2 mm
Latest Full Backplane
Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips
478 parts2
4 layers56.1 × 25.9 mm
A DIY 8-bit computer built mostly with discrete logic chips
- Size
- 56.1 × 25.9 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 43
- Pads
- 109
- Tracks, vias
- 306, 43
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Apr 2021
- Updated
- 9 Nov 2022
Overview
Modules is an open-source printed circuit board by Trilobyte-CPU, from the Trilobyte-CPU/8-bit-computer repository on GitHub. It is a 4-layer board of 56.1 × 25.9 mm with 23 parts on 43 nets, routed with 306 tracks and 43 vias.
It is built around the 74LS245SC and 74LS86. Its parts include 8 resistors, 8 diodes, 3 ICs, 3 connectors and 1 capacitor.
Main components
274LS245SC
-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, Transceivers
74LS86
DIP-14-20℃~+75℃ 10mA 2.7V 23ns@5V,15pF 2V 400mV 400uA 5V 74LS 800mV 8mA XOR Gate DIP-14 Logic Gates ROHSHITLogic Gates
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D5, D6, D7, D8 |
| 8 | R_US | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 2 | 74LS86 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U7, U8 |
| 1 | 74LS245 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | C | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | Conn_01x02 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x09 | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J3 |
| 1 | Conn_01x16 | Connector_PinSocket_2.54mm:PinSocket_1x16_P2.54mm_Vertical | J1 |
Questions
How big is the Modules PCB?
It measures 56.1 × 25.9 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Modules use?
23 parts, built around the 74LS245SC and 74LS86. 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 Modules KiCad files?
From the Trilobyte-CPU/8-bit-computer repository on GitHub, at the commit this page was made from: the board is PCBs/03_MODULES/CPU-ALU/Logic Gates/Modules.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Modules design in my own project?
Its repository states no licence, so its author keeps all rights: ask Trilobyte-CPU before reusing the design.
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