4 layers142.2 × 104.1 mm
CompaqPortableIIImemexp
raymondh2/CompaqPortableIII
Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.
32 parts17
2 layers
CompaqportableIII
raymondh2/CompaqPortableIII17Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 123
- Nets
- 774
- Pads
- 1,992
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 7 (file 20221018)
- Created
- 3 Aug 2022
- Updated
- 4 May 2024
Overview
CompaqportableIII is an open-source printed circuit board by raymondh2, from the raymondh2/CompaqPortableIII repository on GitHub. It is a 2-layer board with 123 parts on 774 nets.
It is built around the PAL16L8-5JC, 74F245D and 74LS125DC, with the 74LS245SC, 74LS367PC and 74LS373SC among its other parts. Its parts include 79 ICs, 4 connectors, 3 transistors and 1 switch.
Main components
12PAL16L8-5JC
PLCC-205V 5ns PAL PAL16L8 PLCC-20 Programmable Logic Device (CPLDs/FPGAs)Infineon TechnologiesProgrammable Logic Device (CPLDs/FPGAs)
74F245D
SOIC-20-300mil0℃~+70℃ 15mA 4.5V~5.5V 4ns@5V,50pF 64mA 74F Bidirectional Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNXP SemiconductorsBuffers, Drivers, Receivers, Transceivers74LS125DC
-0℃~+70℃ 1 10ns@5.5V,50pF 15mA 18mA 24mA 4 4.5V~5.5V 74LS Power-off isolation、Output enable Tri-State Unidirectional - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers74LS245SC
-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, Transceivers
74LS367PC
PDIP-16Buffers, Drivers, Receivers, TransceiversTexas Instruments
74LS373SC
--55℃~+125℃ 1 2.6mA 24mA 38ns@5V,150pF 4.75V~5.25V 74LS 8 Output enable Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
SN75477P
PDIP-80℃~+70℃ 1 100uA 2 300mA 350ns@5V,15pF 4.5V~5.5V TTL-compatible CMOS Unidirectional PDIP-8 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers27C256-17/J
-0℃~+70℃ 256Kbit 4.5V~5.5V EPROM Parallel Port (Parallel) - Non-Volatile Memory (ROM)Microchip TechnologyNon-Volatile Memory (ROM)
MC1488N
PDIP-14-55℃~+125℃ 4 7.5V~15V Driver PDIP-14 RS232 ICs ROHSTexas InstrumentsRS232 ICs
MC3487N
DIP-16-40℃~+85℃ 4 5V Driver DIP-16 RS-485 / RS-422 ICs ROHSHGSEMIRS-485 / RS-422 ICs74F244D
SOIC-20-300milSOIC-20-300mil Specialty Logic ROHSPhilips SemiconsSpecialty Logic74LS280FP-E
-0.4V、0.5V 0.8V 2.7V 2V Odd parity generation、Simultaneous odd/even parity output、Even parity generation - Parity Generators and Checkers ROHSRenesas ElectronicsParity Generators And Checkers
README
README.mdCompaqPortableIII
Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.
Recreation of U10 Part Number 107393-001 working as expected so far. Recreation of U20 Part Number 107392-001 is untested.
The mainboard schematics are not verfied or complete.
Other Projects
Replacement Battery Module by Sergey Kiselev GitHub
License
This work is licensed under the CERN Open Hardware License v2 Strongly Reciprocal. See here.
Parts
123| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 8K2 | Resistor_THT:R_Array_SIP10 | RN3, RN5, RN6, RN8, RN9, RN10, RN11, RN12, RN13, RN14, RN20, RN21, RN23 |
| 6 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | E2, E3, E4, E5, E6, E13 |
| 6 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | E1, E7, E9, E10, E12, E14 |
| 5 | 74ALS245 | Package_DIP:DIP-20_W7.62mm | U40, U47, U70, U79, U80 |
| 4 | 27C256 | Package_DIP:DIP-28_W15.24mm | U72, U73, U89, U90 |
| 3 | 33R | Resistor_THT:R_Array_SIP10 | RN16, RN17, RN18 |
| 3 | 74F244 | Package_DIP:DIP-20_W7.62mm | U54, U55, U61 |
| 3 | 74F245 | Package_DIP:DIP-20_W7.62mm | U32, U68, U78 |
| 3 | 74LS125 | Package_DIP:DIP-14_W7.62mm | U18, U24, U37 |
| 3 | 74LS245 | Package_DIP:DIP-20_W7.62mm | U11, U23, U26 |
| 2 | 7406N | Package_DIP:DIP-14_W7.62mm | U1, U4 |
| 2 | 74ALS04 | Package_DIP:DIP-14_W7.62mm | U22, U64 |
| 2 | 74ALS138 | Package_DIP:DIP-16_W7.62mm | U19, U52 |
| 2 | 74ALS244 | Package_DIP:DIP-20_W7.62mm | U33, U48 |
| 2 | 74ALS74 | Package_DIP:DIP-14_W7.62mm | U16, U91 |
| 2 | 74F00 | Package_DIP:DIP-14_W7.62mm | U36, U41 |
| 2 | 74F32 | Package_DIP:DIP-14_W7.62mm | U46, U60 |
| 2 | 74LS280 | Package_DIP:DIP-14_W7.62mm | U71, U81 |
| 2 | 74LS367 | Package_DIP:DIP-16_W7.62mm | U38, U62 |
| 2 | 74LS373 | Package_DIP:DIP-20_W7.62mm | U87, U88 |
| 2 | 8237 | Package_DIP:DIP-40_W15.24mm | U66, U67 |
| 2 | 8259A-2 | Package_DIP:DIP-28_W15.24mm | U84, U85 |
| 2 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | E8, E17 |
| 2 | MB8264A | Package_DIP:DIP-16_W7.62mm | U21, U27 |
| 2 | MC1489 | Package_DIP:DIP-14_W7.62mm | U74, U75 |
| 2 | PN2222A | Package_TO_SOT_THT:TO-92_Inline | Q2, Q3 |
| 1 | 1.843200 MHz | Oscillator:Oscillator_DIP-14 | U44 |
| 1 | 100R | Resistor_THT:R_Array_SIP6 | RN15 |
| 1 | 16450 | Package_DIP:DIP-40_W15.24mm | U30 |
| 1 | 180 | Resistor_THT:R_Array_SIP10 | RN7 |
| 1 | 1K | Resistor_THT:R_Array_SIP10 | RN1 |
| 1 | 2K | Resistor_THT:R_Array_SIP10 | RN2 |
| 1 | 300R | Resistor_THT:R_Array_SIP6 | RN4 |
| 1 | 4069 | Package_DIP:DIP-14_W7.62mm | U83 |
| 1 | 48 MHz | Oscillator:Oscillator_DIP-14 | U45 |
| 1 | 74ALS00 | Package_DIP:DIP-14_W7.62mm | U7 |
| 1 | 74ALS27 | Package_DIP:DIP-14_W7.62mm | U65 |
| 1 | 74F08 | Package_DIP:DIP-14_W7.62mm | U17 |
| 1 | 74F10 | Package_DIP:DIP-14_W7.62mm | U49 |
| 1 | 74F257 | Package_DIP:DIP-20_W7.62mm | U53 |
| 1 | 74LS05 | Package_DIP:DIP-14_W7.62mm | U28 |
| 1 | 74LS08 | Package_DIP:DIP-14_W7.62mm | U15 |
| 1 | 74LS09 | Package_DIP:DIP-14_W7.62mm | U42 |
| 1 | 74LS112 | Package_DIP:DIP-16_W7.62mm | U8 |
| 1 | 74LS14 | Package_DIP:DIP-14_W7.62mm | U14 |
| 1 | 74LS244 | Package_DIP:DIP-20_W7.62mm | U12 |
| 1 | 74LS374 | Package_DIP:DIP-20_W7.62mm | U76 |
| 1 | 74LS646 | Package_DIP:DIP-24_W7.62mm | U69 |
| 1 | 80287 | Package_DIP:DIP-40_W15.24mm | U43 |
| 1 | 8254 | Package_DIP:DIP-24_W15.24mm | U86 |
| 1 | 8742 | Package_DIP:DIP-40_W15.24mm | U51 |
| 1 | Conn_01x09 | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | E11 |
| 1 | Conn_02x17_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x17_P2.54mm_Vertical | P108 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | P109 |
| 1 | Conn_02x25_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x25_P2.54mm_Vertical | J005 |
| 1 | D765 | Package_DIP:DIP-40_W15.24mm | U6 |
| 1 | DIN41612_96abc | Connector_DIN:DIN41612_R_3x32_Male_Vertical_THT | P111 |
| 1 | F5C-S7 | Oscillator:Oscillator_DIP-14 | U29 |
| 1 | MC146818A | Package_DIP:DIP-24_W15.24mm | U77 |
| 1 | MC1488 | Package_DIP:DIP-14_W7.62mm | U82 |
| 1 | MC3487N | Package_DIP:DIP-16_W7.62mm | U9 |
| 1 | MC4024 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | PAL16L8 | Package_DIP:DIP-20_W7.62mm | U10 |
| 1 | PAL20L8 | Package_DIP:DIP-24_W7.62mm | U20 |
| 1 | SN75477 | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | SW_DIP_x08 | Button_Switch_THT:SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | SW1 |
| 1 | TL431C | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | μA741CP | Package_DIP:DIP-8_W7.62mm | U13 |
More from raymondh2/CompaqPortableIII
3- 2 layers
CompaqPortableISACHASSIS
raymondh2/CompaqPortableIII
Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.
17 parts17 - 4 layers127 × 53.3 mm
CompaqPortableIIIexpansionbackplane
raymondh2/CompaqPortableIII
Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.
10 parts17
Similar boards
- 2 layers100 × 77.5 mm
- 4 layers243.8 × 243.8 mm
- 2 layers426 × 307 mm
I7000
felipesanches/Itautec_I7000_KICAD
Esquemáticos do computador Itautec I-7000 G desenhados a partir de inspeção do circuito das PCBs
115 parts - 2 layers232.8 × 204.2 mm
- 2 layers100 × 100 mm
SEU M 1.04
fablab-wue/piTelex.supplement
This project hold the additional files for the teletype project piTelex
86 parts3GPL-3.0 - 4 layers241.8 × 174.8 mm
- 2 layers152.4 × 101.6 mm
8088-FE2010A SBC
skiselev/micro_8088
Micro 8088 - IBM XT Compatible Processor Board based on Faraday FE2010 chipset
72 parts412GPL-3.0 - 4 layers184.9 × 243.8 mm
Project NuXT
monotech/NuXT
MicroATX Turbo XT Motherboard, with VGA, Floppy, CF, Serial
223 parts121GPL-3.0
Questions
What parts does the CompaqportableIII use?
123 parts, built around the PAL16L8-5JC, 74F245D, 74LS125DC and 74LS245SC. 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 CompaqportableIII KiCad files?
From the raymondh2/CompaqPortableIII repository on GitHub, at the commit this page was made from: the board is compaqportableIII_mainboard/compaqportableIII.kicad_pcb and its schematic CompaqPortableIIIexpansionbackplane/CompaqPortableIIIexpansionbackplane.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CompaqportableIII design in my own project?
Its repository states no licence, so its author keeps all rights: ask raymondh2 before reusing the design.