2 layers182.2 × 90.2 mm
2 layers218.4 × 134.6 mm
Z80board
rcapaverde/z80board- Size
- 218.4 × 134.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 119
- Pads
- 481
- Tracks, vias
- 0, 0
- Pours
- 1
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Aug 2026
- Updated
- 24 Aug 2026
Overview
Z80board is an open-source printed circuit board by rcapaverde, from the rcapaverde/z80board repository on GitHub. It is a 2-layer board of 218.4 × 134.6 mm with 42 parts on 119 nets.
It is built around the 74LS00SC and LM7805. Its parts include 14 capacitors, 12 ICs, 5 connectors, 4 diodes and 3 resistors.
Main components
2
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
LM7805
TO-2630℃~+125℃ 1 1A 20V 2V 42uV 5V 62dB@(120Hz) 8mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-263 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100nF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C1, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12 |
| 5 | 74LS244 | Package_DIP:DIP-20_W7.62mm | U8, U9, U10, U11, U12 |
| 3 | extension_0 | edge_connector:male-edge-connector-44 | J2, J3, J4 |
| 2 | 470R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R7 |
| 2 | CY62256-70PC | Package_DIP:DIP-28_W15.24mm | U5, U6 |
| 1 | 0.1uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C14 |
| 1 | 0.33uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C13 |
| 1 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 1N4001 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D32 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 220uF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C2 |
| 1 | 74LS00 | Package_DIP:DIP-14_W7.62mm | U4 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm | U7 |
| 1 | 74LS283 | Package_DIP:DIP-16_W7.62mm | U3 |
| 1 | CXO_DIP8 | Oscillator:Oscillator_DIP-8 | Y1 |
| 1 | HALT | LED_THT:LED_D5.0mm | D4 |
| 1 | LM7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U34 |
| 1 | ON/OFF | power_switch:jrx | SW5 |
| 1 | POWER | LED_THT:LED_D5.0mm | D3 |
| 1 | R_Network04 | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | SW_SPST | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | Z84C00xxP | Package_DIP:DIP-40_W15.24mm | U1 |
| 1 | cartridge | edge_connector:male-edge-connector-44 | J1 |
| 1 | power_jack | Connector_BarrelJack:BarrelJack_Horizontal | J18 |
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Questions
How big is the Z80board PCB?
It measures 218.4 × 134.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Z80board use?
42 parts, built around the 74LS00SC and LM7805. 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 Z80board KiCad files?
From the rcapaverde/z80board repository on GitHub, at the commit this page was made from: the board is pcb/mainboard/mainboard.kicad_pcb and its schematic pcb/mainboard/mainboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Z80board design in my own project?
Its repository states no licence, so its author keeps all rights: ask rcapaverde before reusing the design.