2 layers178 × 711 mm
4 layers
SC08v2
lonyelon/SC08v23Sergio's Simple Computer (8bit, version 2)
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 116
- Nets
- 254
- Pads
- 1,029
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Oct 2022
- Updated
- 22 Jul 2026
Overview
SC08v2 is an open-source printed circuit board by lonyelon, from the lonyelon/SC08v2 repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board with 116 parts on 254 nets.
It is built around the 74HC245D, 74HC151D and 74HC273D, with the 74HC00D, 74HC283P-E and 74HC74D among its other parts.
Main components
9
74HC245D
SO-20-300mil-40℃~+125℃ 1 160uA 2V~6V 7.8mA 7.8mA 74HC 8 9ns@4.5V,50pF Bidirectional Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
74HC151D
SOIC-16-40℃~+125℃ 15ns@5V,15pF 2V~6V 40uA 5.2mA 5.2mA 74HC 8/1 Multiplexer Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSToshibaSignal Switches / Encoders & Decoders / Multiplexers74HC273D
SOIC-20-300mil-40℃~+125℃ 1 12ns 15ns@4.5V,50pF 2V~6V 3.5pF 30MHz 3ns 74HC Series 8 8uA D-Type Reset Rising Edge SO-20-300mil Flip Flops ROHSNexperiaFlip Flops
74HC00D
SOP-14-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、3.7V、5.9V 100mV、400mV、400mV 2 2V~6V 4 40uA 5.2mA 5.2mA 500mV~1.8V 74HC Series 7ns@6V,50pF NAND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
74HC283P-E
-- Specialty Logic ROHSRenesas ElectronicsSpecialty Logic74HC74D
SOIC-14-40℃~+125℃ 1 15ns 2 2V~6V 3.5pF 37ns@6V,50pF 3ns、3ns、3ns 40uA 5.2mA 5.2mA 74HC Series 82MHz Asynchronous Complementary D-Type Rising Edge Set and Reset SOIC-14 Flip Flops ROHSNexperiaFlip Flops74HC85D
SOIC-16-40℃~+125℃ 2V~6V 33ns@6V,50pF 4 5.2mA 5.2mA 8uA A<B,A=B,A>B Active High SOIC-16 Digital Comparators ROHSNexperiaDigital Comparators74HC86D
SO-14-40℃~+125℃ 1.5V~4.2V 20ns@6V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series XOR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates74HC04D
SOP-14-40℃~+125℃ 1 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV、400mV 14ns@6V,50pF 2V~6V 2uA 5.2mA 5.2mA 500mV~1.8V 6 74HC SOIC-14 Inverters ROHSNexperiaInverters
Parts
116| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | 100 nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | ADD_U0_C1, ADD_U1_C1, ADR1_U0_C1, ADR1_U1_C1, ADR2_U0_C1, ADR2_U1_C1, ALUMUX_U0_C1, ALUMUX_U1_C1, ALUMUX_U2_C1, ALUMUX_U3_C1, ALUMUX_U4_C1, ALUMUX_U5_C1, ALUMUX_U6_C1, ALUMUX_U7_C1, CLK_U_C2, CLKINVERTER_U_C1 +26 |
| 15 | ~ | Package_DIP:DIP-16_W7.62mm | ADR0_U0, ADR0_U1, ADR1_U0, ADR1_U1, ADR2_U0, ADR2_U1, IC_U1, PC_U0, PC_U1, PC_U2, PC_U3, ROMMUX_U0, ROMMUX_U1, ROMMUX_U2, ROMMUX_U3 |
| 8 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | ADR0_U0_C1, ADR0_U1_C1, AUX_U0_C1, AUX_U1_C1, DTA_U_C1, DTB_U_C1, IC_U_C1, RAM_U_C1 |
| 8 | 74HC151 | Package_DIP:DIP-16_W7.62mm | ALUMUX_U0, ALUMUX_U1, ALUMUX_U2, ALUMUX_U3, ALUMUX_U4, ALUMUX_U5, ALUMUX_U6, ALUMUX_U7 |
| 6 | 74HC273 | Package_DIP:DIP-20_W7.62mm | AUX_U0, DTA_U1, DTB_U1, INP_U0, IR_U1, OUT_U1 |
| 4 | 12uF | Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm | ALU_C1, CU_C1, RAM_C1, ROM_C1 |
| 4 | 74HC245 | Package_DIP:DIP-20_W7.62mm | AUX_U1, INP_U1, INPFLAG_U1, OUT_FLAG_U1 |
| 3 | 28C64 | Package_DIP:DIP-28_W15.24mm | DECODER_U0, DECODER_U1, DECODER_U2 |
| 3 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | INP_CONN0, INP_CONN1, OUT_CONN0 |
| 2 | 74HC00 | Package_DIP:DIP-14_W7.62mm | NAND_U0, NAND_U1 |
| 2 | 74HC283 | Package_DIP:DIP-16_W7.62mm | ADD_U0, ADD_U1 |
| 2 | 74HC74 | Package_DIP:DIP-14_W7.62mm | IODFLIPFLOP_U1, SWT_U1 |
| 2 | 74HC85 | Package_DIP:DIP-16_W7.62mm | COMP_U0, COMP_U1 |
| 2 | 74HC86 | Package_DIP:DIP-14_W7.62mm | XOR_U0, XOR_U1 |
| 2 | C | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | CLK_U_C1, CLK_U_C3 |
| 2 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | INP_CONN2, OUT_CONN2 |
| 1 | 1nF >=50V | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | USB_CONN_C1 |
| 1 | 28C512 | Package_DIP:DIP-32_W15.24mm | ROM_U1 |
| 1 | 5.1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | USB_CONN_R1 |
| 1 | 74HC04 | Package_DIP:DIP-14_W7.62mm | CLKINVERTER_U1 |
| 1 | Conn_01x01 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | OUT_CONN1 |
| 1 | LM555xN | Package_DIP:DIP-8_W7.62mm | CLK_U1 |
| 1 | R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | CLK_U_R1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | USB_CONN1 |
| 1 | ~ | Package_DIP:DIP-24_18.0mmx34.29mm_W15.24mm | RAM_U1 |
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Questions
What parts does the SC08v2 use?
116 parts, built around the 74HC245D, 74HC151D, 74HC273D and 74HC00D. 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 SC08v2 KiCad files?
From the lonyelon/SC08v2 repository on GitHub, at the commit this page was made from: the board is kicad/SC08v2/SC08v2.kicad_pcb and its schematic kicad/SC08v2/SC08v2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SC08v2 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).