4 layers293 × 406 mm
4 layers166 × 317 mm
ALU Module
SSCsimsi/8Bit_Computer- Size
- 166 × 317 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 625
- Nets
- 649
- Pads
- 3,390
- Tracks, vias
- 11,623, 2,879
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Jun 2023
- Updated
- 28 Apr 2026
Overview
ALU Module is an open-source printed circuit board by SSCsimsi, from the SSCsimsi/8Bit_Computer repository on GitHub. It is a 4-layer board of 166 × 317 mm with 625 parts on 649 nets, routed with 11,623 tracks and 2,879 vias.
It is built around the MP2338GTL-Z, SN74LVC1G14DBVR and SN74AHC74DRE4, with the SN74LVC1G08DBVR, SN74F283D and SN74LVC1G32DBVR among its other parts. Its parts include 195 capacitors, 188 ICs, 119 diodes, 101 resistors and 21 connectors.
Main components
12
MP2338GTL-Z
SOT-583-40℃~+125℃ 1 160uA 3A 4.5V~28V 450kHz 500mV~16V Adjustable Buck Buck Built-in Yes SOT-583 DC-DC Converters ROHSMonolithic Power SystemsDC-DC Converters
SN74LVC1G14DBVR
SOT-23-5-40℃~+125℃ 1 1 1.65V~5.5V 10uA 24mA 24mA 6ns@4.5V~5.5V,50pF 74LVC SOT-23-5 Inverters ROHSTECH PUBLICLogic Gates
SN74AHC74DRE4
-Flip FlopsTexas InstrumentsSN74LVC1G08DBVR
SOT-23-5-40℃~+85℃ 1 1.65V~5.5V 1.7V、2V 100nA 2 3.4ns@5V,15pF 32mA 32mA 350mV 4V 700mV、800mV 74LVC AND Gate Local shutdown mode SOT-23-5 Logic Gates ROHSTWGMCLogic Gates
SN74F283D
SOIC-16SOIC-16 Specialty Logic ROHSTexas InstrumentsSpecialty LogicSN74LVC1G32DBVR
SOT-23-5SOT-23-5 Logic Gates ROHSTECH PUBLICLogic Gates
SN74AHC86DR-TP
SOP-14SOP-14 Logic Gates ROHSTECH PUBLICLogic GatesSN74LVC1G86DBVR-TP
SOT-23-5-40℃~+125℃ 1 1.2V、1.9V、2.3V、2.4V、3.8V 1.65V~5.5V 10uA 2 300mV、400mV、450mV、550mV 32mA 32mA 4ns@3.3V,50pF 74LVC XOR Gate SOT-23-5 Logic Gates ROHSTECH PUBLICLogic GatesSN74AHC14DRG3
SOIC-14-40℃~+125℃ 10.6ns@5V,50pF 2.2V~3.85V 2V~5.5V 2uA 6 74AHC 8mA 8mA 900mV~1.65V Noise suppression function Push-pull Schmitt trigger SOIC-14 Inverters ROHSTexas InstrumentsInverters
SN74HC682N
PDIP-20-40℃~+85℃ 2V~6V 47ns@6V,50pF 5.2mA 5.2mA 8 A=B,A>B Active Low PDIP-20 Digital Comparators ROHSTexas InstrumentsDigital Comparators
LTST-C170KFKT
0805-55℃~+85℃ 130° 20mA 2V 605nm 611nm 75mW 90mcd Discrete Diode Orange Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
1N4148WS-7-F-CN
SOD-323Switching DiodesChipNobo
README
README.mdComputer_HTL
Parts
625| Qty | Value | Footprint | References |
|---|---|---|---|
| 187 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C100, C101, C102, C103, C104, C105, C106, C107, C108, C109, C110, C111, C112, C113, C114, C115 +171 |
| 64 | 390 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R112, R113, R114, R115, R116, R117, R118, R119, R120, R121, R122, R123, R124, R125, R126, R127 +48 |
| 53 | SN74LVC1G14DBVR | Samacsys:SOT95P280X145-5N | IC10, IC11, IC12, IC13, IC14, IC15, IC101, IC105, IC110, IC115, IC120, IC125, IC136, IC137, IC145, IC146 +37 |
| 38 | LTST-C170KFKT | Samacsys:LEDC2012X120N | LED27, LED28, LED29, LED30, LED31, LED32, LED33, LED34, LED35, LED36, LED37, LED38, LED39, LED40, LED41, LED42 +22 |
| 30 | 150 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R82, R83, R84, R85, R100, R101, R102, R103, R104, R105, R106, R107, R108, R109, R110, R111 +14 |
| 30 | SN74F521DWR | Samacsys:SOIC127P1030X265-20N | IC4, IC32, IC33, IC34, IC35, IC36, IC37, IC38, IC39, IC40, IC41, IC42, IC43, IC44, IC45, IC46 +14 |
| 25 | 1N4148WS-7-F | Samacsys:SOD2513X120N | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +9 |
| 24 | LTST-C170KGKT | Samacsys:LEDC2012X110N | LED73, LED74, LED75, LED76, LED77, LED78, LED79, LED80, LED106, LED108, LED110, LED112, LED114, LED116, LED118, LED120 +8 |
| 24 | LTST-C171KSKT | Samacsys:LTSTC171KSKT | LED57, LED58, LED59, LED60, LED61, LED62, LED63, LED64, LED105, LED107, LED109, LED111, LED113, LED115, LED117, LED119 +8 |
| 19 | M20-7910842R | Samacsys:M207910842R | J1, J2, J3, J4, J5, J6, J10, J11, J12, J13, J14, J15, J16, J17, J38, J39 +3 |
| 19 | SN74ABT574ADWR | Samacsys:SOIC127P1030X265-20N | IC19, IC20, IC21, IC100, IC104, IC109, IC114, IC119, IC124, IC133, IC143, IC144, IC154, IC182, IC195, IC196 +3 |
| 19 | SN74AHC74DR | Samacsys:SOIC127P600X175-14N | IC22, IC23, IC24, IC66, IC103, IC108, IC113, IC118, IC123, IC129, IC130, IC131, IC138, IC150, IC173, IC189 +3 |
| 10 | SN74LVC1G08DBVR | Samacsys:SOT95P280X145-5N | IC25, IC26, IC27, IC67, IC90, IC153, IC174, IC177, IC178, IC186 |
| 8 | LTST-C170KRKT | Samacsys:LEDC2012X120N | LED97, LED98, LED99, LED100, LED101, LED102, LED103, LED104 |
| 8 | SN74AHC540DWR | Samacsys:SOIC127P1030X265-20N | IC274, IC275, IC276, IC277, IC278, IC279, IC280, IC281 |
| 6 | SN74ABT245BDWR | Samacsys:SOIC127P1030X265-20N | IC28, IC29, IC30, IC68, IC134, IC184 |
| 6 | SN74AHC08DR | Samacsys:SOIC127P600X175-14N | IC106, IC107, IC128, IC132, IC148, IC179 |
| 6 | SN74AHC157DR | Samacsys:SOIC127P600X175-16N | IC171, IC172, IC175, IC176, IC180, IC181 |
| 6 | SN74F283D | Samacsys:SOIC127P600X175-16N | IC139, IC140, IC141, IC191, IC192, IC193 |
| 6 | SN74LVC1G32DBVR | Samacsys:SOT95P280X145-5N | IC86, IC88, IC135, IC170, IC190, IC271 |
| 5 | SN74HCS4075DR | Samacsys:SOIC127P600X175-14N | IC85, IC87, IC127, IC149, IC185 |
| 4 | SN74AHC86DR | Samacsys:SOIC127P600X175-14N | IC121, IC122, IC187, IC188 |
| 3 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R14, R17, R19 |
| 3 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C167, C168, C169 |
| 3 | SN74AHC32DR | Samacsys:SOIC127P600X175-14N | IC116, IC117, IC126 |
| 3 | SN74LVC1G86DBVR | Samacsys:SOT95P280X145-5N | IC98, IC142, IC194 |
| 2 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C170, C171 |
| 2 | M20-7911042R | Samacsys:M207911042R | J40, J41 |
| 2 | SN74AHC14DR | Samacsys:SOIC127P600X175-14N | IC111, IC112 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C322 |
| 1 | 191k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R15 |
| 1 | 22nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C172 |
| 1 | 300pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C173 |
| 1 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | 49.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R16 |
| 1 | 6.8uH | Samacsys:INDPM108100X400N | L3 |
| 1 | 90.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R18 |
| 1 | MP2338GTL-Z | Samacsys:MP2338GTLZ | IC31 |
| 1 | SN74HC682N | Samacsys:DIP794W53P254L2540H508Q20N | IC147 |
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Questions
How big is the ALU Module PCB?
It measures 166 × 317 mm and has 4 copper layers, 1.6 mm thick.
What parts does the ALU Module use?
625 parts, built around the MP2338GTL-Z, SN74LVC1G14DBVR, SN74AHC74DRE4 and SN74LVC1G08DBVR. 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 ALU Module KiCad files?
From the SSCsimsi/8Bit_Computer repository on GitHub, at the commit this page was made from: the board is 8Bit Computer ver2.0/Kicad/Computer/ALU_Module.kicad_pcb and its schematic 8Bit Computer ver2.0/Kicad/ClockGen/ClockGen.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ALU Module design in my own project?
Its repository states no licence, so its author keeps all rights: ask SSCsimsi before reusing the design.