2 layers95.9 × 90.2 mm
2 layers95.9 × 90.2 mm
Arithmetic Logic Unit
uddivert/SAP-U1- Size
- 95.9 × 90.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 130
- Pads
- 420
- Tracks, vias
- 0, 0
- Pours
- 1
- Routed
- Not yet
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Sep 2024
- Updated
- 20 Oct 2025
Overview
Arithmetic Logic Unit is an open-source printed circuit board by uddivert, from the uddivert/SAP-U repository on GitHub, published under the MIT licence. It is a 2-layer board of 95.9 × 90.2 mm with 81 parts on 130 nets.
It is built around the 74LS245SC, 74LS173SC and 74LS86, with the 74LS02PC among its other parts. Its parts include 24 resistors, 24 diodes, 14 capacitors, 14 ICs and 1 connector.
Main components
474LS245SC
-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, Transceivers74LS173SC
CDIP-160℃~+70℃ 10ns 10ns 28mA 30MHz 4 4.75V~5.25V 40ns@5V,15pF 74LS Series Asynchronous D-Type Reset Rising Edge Tri-State CDIP-16 Flip FlopsTexas InstrumentsFlip Flops
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 Gates74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates
Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +8 |
| 24 | LED | LED_THT:LED_D5.0mm | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +8 |
| 14 | .01µF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14 |
| 5 | 74LS173 | Package_DIP:DIP-16_W7.62mm | U2, U3, U11, U13, U14 |
| 4 | MountingHole_2.5mm_Pad | MountingHole:MountingHole_2.5mm_Pad | M_1, M_2, M_3, M_4 |
| 3 | 74LS245 | Package_DIP:DIP-20_W7.62mm | U1, U10, U12 |
| 2 | 74LS283 | Package_DIP:DIP-16_W7.62mm | U8, U9 |
| 2 | 74LS86 | Package_DIP:DIP-14_W7.62mm | U5, U6 |
| 1 | 74LS02 | Package_DIP:DIP-14_W7.62mm | U7 |
| 1 | 74LS08 | Package_DIP:DIP-14_W7.62mm | U4 |
| 1 | PC104 | Connector_PinSocket_2.54mm:PinSocket_2x32_P2.54mm_Vertical | J1 |
Questions
How big is the Arithmetic Logic Unit PCB?
It measures 95.9 × 90.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Arithmetic Logic Unit use?
81 parts, built around the 74LS245SC, 74LS173SC, 74LS86 and 74LS02PC. 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 Arithmetic Logic Unit KiCad files?
From the uddivert/SAP-U repository on GitHub, at the commit this page was made from: the board is Arithmetic_Logic_Unit/Arithmetic_Logic_Unit.kicad_pcb and its schematic Arithmetic_Logic_Unit/ALU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arithmetic Logic Unit design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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