2 layers87.4 × 66.7 mm
2 layers155.7 × 76.9 mm
Hre clone
sjgray/HRE-CloneCommodore 8296 High-Res Emulator clone
- Size
- 155.7 × 76.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 111
- Pads
- 296
- Tracks, vias
- 1,098, 47
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 10 Oct 2026
- Updated
- 27 Oct 2026
Overview
Hre clone is an open-source printed circuit board by sjgray, from the sjgray/HRE-Clone repository on GitHub. It is a 2-layer board of 155.7 × 76.9 mm with 23 parts on 111 nets, routed with 1,098 tracks and 47 vias.
It is built around the 74LS257PC, 74LS05P-E and 74LS155PC, with the 74LS174DC and 74LS258PC among its other parts. Its parts include 13 ICs, 5 resistors, 4 capacitors and 1 switch.
Main components
5
74LS257PC
DIP-160℃~+70℃ 12mA 2.6mA 24mA 27ns@5V,150pF 4.75V~5.25V 74LS Output enable high-impedance、Tri-state output DIP-16 Signal Switches, Multiplexers, DecodersTexas InstrumentsSignal Switches, Multiplexers, Decoders74LS05P-E
-- Inverters ROHSRenesas ElectronicsLogic Gates74LS155PC
PDIP-160℃~+70℃ 35ns@5V,50pF 4.75V~5.25V 400uA 6.1mA 74LS 8mA Decoder Reverse function Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
74LS174DC
-0ns 0℃~+70℃ 1 16mA 20ns 30MHz 30ns@5V,15pF 4.75V~5.25V 400uA 6 74LS Series 8mA Asynchronous Push-Pull Reset Rising Edge - Flip Flops ROHSonsemiFlip Flops74LS258PC
DIP-160℃~+70℃ 12mA 2.6mA 24mA 27ns@5V,150pF 4.75V~5.25V 74LS Output enable high-impedance、Tri-state output DIP-16 Signal Switches, Multiplexers, DecodersTexas InstrumentsSignal Switches, Multiplexers, Decoders
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R2, R3, R4, R5 |
| 4 | C | Capacitor_THT:C_Disc_D8.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4 |
| 2 | 2716 | Package_DIP:DIP-24_W15.24mm | U5, U6 |
| 2 | 74LS257 | Package_DIP:DIP-16_W7.62mm | U3, U9 |
| 2 | MC6845 | Package_DIP:DIP-40_W15.24mm | U10, U11 |
| 1 | 7402 | Package_DIP:DIP-14_W7.62mm | U13 |
| 1 | 74LS05 | Package_DIP:DIP-14_W7.62mm | U7 |
| 1 | 74LS155 | Package_DIP:DIP-16_W7.62mm | U8 |
| 1 | 74LS174 | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | 74LS244 | Package_DIP:DIP-20_W7.62mm | U4 |
| 1 | 74LS258 | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | DIL14 | Package_DIP:DIP-14_W7.62mm | U12 |
| 1 | SW_DIP_x04 | Button_Switch_THT:SW_DIP_SPSTx04_Slide_6.7x11.72mm_W7.62mm_P2.54mm_LowProfile | SW1 |
Questions
How big is the Hre clone PCB?
It measures 155.7 × 76.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hre clone use?
23 parts, built around the 74LS257PC, 74LS05P-E, 74LS155PC and 74LS174DC. 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 Hre clone KiCad files?
From the sjgray/HRE-Clone repository on GitHub, at the commit this page was made from: the board is PCB/Clone/hre-clone.kicad_pcb and its schematic PCB/Clone/hre-clone.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hre clone design in my own project?
Its repository states no licence, so its author keeps all rights: ask sjgray before reusing the design.
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