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 layers82 × 67.1 mm
A DIY 8-bit computer built mostly with discrete logic chips
- Size
- 82 × 67.1 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 78
- Pads
- 215
- Tracks, vias
- 707, 66
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Apr 2021
- Updated
- 9 Nov 2022
Overview
Audio 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 82 × 67.1 mm with 31 parts on 78 nets, routed with 707 tracks and 66 vias.
It is built around the 74LS169PC, 74LS574N and MC14029BD, with the 74LS30PC among its other parts. Its parts include 17 resistors, 8 ICs, 3 connectors and 1 switch. It belongs with the audio and music boards of this library.
Main components
4
74LS169PC
PDIP-160℃~+70℃ 1 4 4.75V~5.25V 74LS Divide-by-2 Programmable divide ratio、Cascade counter、Synchronous counting、Multi-mode counting Rising Edge Synchronous Synchronous Up Counter、Down Counter PDIP-16 Counters, DividersTexas InstrumentsCounters, Dividers74LS574N
-0ns 0℃~+70℃ 1 2.6mA 20ns 24mA 28ns@5V,45pF 35MHz 4.75V~5.25V 74LS Series 8 D-Type Rising Edge Tri-State - Flip Flops ROHSRochester Electronics, LLCFlip Flops
MC14029BD
SOIC-16-55℃~+125℃ 1 10MHz 3V~18V Divide-by-2、Divide-by-10 Rising Edge Synchronous Synchronous counting、Asynchronous parallel load、Multi-mode counting Up Counter、Down Counter SOIC-16 Counters, Dividers ROHSonsemiCounters, Dividers
74LS30PC
PDIP-140℃~+70℃ 1 1.1mA 18ns@5V,50pF、20ns@5V,50pF 2.7V 2V 4.75V~5.25V 400uA 500mV 74LS Series 8 800mV 8mA NAND Gate PDIP-14 Logic GatesTexas InstrumentsLogic Gates
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | R_US | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8, R10, R11, R12, R13, R14, R15, R16, R17 +1 |
| 2 | 74LS169 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3, U7 |
| 2 | 74LS574 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1, U2 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3, J4 |
| 2 | MC14029B | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U4, U6 |
| 1 | 28C256 | Socket:DIP_Socket-28_W11.9_W12.7_W15.24_W17.78_W18.5_3M_228-1277-00-0602J | U8 |
| 1 | 74LS30 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U5 |
| 1 | Conn_01x14 | Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical | J1 |
| 1 | R_POT_TRIM_US | Potentiometer_THT:Potentiometer_Bourns_3386F_Vertical | RV1 |
| 1 | SW_DPDT_x2 | 8-bit-computer:THT-DPDT | SW1 |
| 1 | Speaker | Connector_Audio:3.5mm_Audio_Jack-STEPHEN | LS1 |
Questions
How big is the Audio PCB?
It measures 82 × 67.1 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Audio use?
31 parts, built around the 74LS169PC, 74LS574N, MC14029BD and 74LS30PC. 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 Audio KiCad files?
From the Trilobyte-CPU/8-bit-computer repository on GitHub, at the commit this page was made from: the board is PCBs/99_IN PROGRESS/IO-Midi/audio-backups/audio-2022-01-09_114154/audio.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Audio 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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