2 layers99.1 × 87.6 mm
Plusd
alvaroalea/plusD-clone
Schematic of a clone of the Disk Interface +D for the ZX Spectrum
52 parts25
2 layers99.1 × 99.1 mm
Schematic of a clone of the Disk Interface +D for the ZX Spectrum
- Size
- 99.1 × 99.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 107
- Pads
- 478
- Tracks, vias
- 1,967, 88
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 12 Jun 2018
- Updated
- 26 Apr 2023
Overview
Plusd is an open-source printed circuit board by alvaroalea, from the alvaroalea/plusD-clone repository on GitHub. It is a 2-layer board of 99.1 × 99.1 mm with 69 parts on 107 nets, routed with 1,967 tracks and 88 vias.
It is built around the 74LS126PC, 74LS00SC and 74LS175PC, with the 74LS27P-E, 74LS374PC and L7805 among its other parts. Its parts include 18 capacitors, 12 resistors, 12 ICs, 5 diodes and 4 connectors. It belongs with the retro computing and games and interfaces and adapters boards and the FPGA and CPLD boards of this library.
Main components
6
74LS126PC
DIP-140℃~+70℃ 1 130mA 24mA 4 4.75V~5.25V 5.2mA 74LS Output enable、Short-Circuit Protection Tri-State Unidirectional DIP-14 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
74LS175PC
PDIP-160℃~+70℃ 1 10ns 18mA 25ns@5V,15pF 30MHz 4 4.75V~5.25V 5ns 74LS Series Asynchronous Complementary type D-Type Reset Rising Edge PDIP-16 Flip Flops ROHSTexas InstrumentsFlip Flops74LS27P-E
DIP-14-20℃~+75℃ 15ns@5V,15pF 2.7V 2V 3 3 400mV、500mV 74LS 800mV NOR Gate DIP-14 Logic Gates ROHSRenesas ElectronicsLogic Gates
74LS374PC
PDIP-200ns 0℃~+70℃ 1 20ns 28ns@5V,45pF 35MHz 4.75V~5.25V 45mA 74LS Series 8 D-Type Rising Edge Tri-State PDIP-20 Flip FlopsonsemiFlip Flops
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
Rev_02/README.mdThe +D Interface Disk for ZX Spectrum
the schematic and PCB for this interfaz, make in KICAD also the gerber to order, the PCB is less than 10x10cm so it's very cheap.
dificult to found a WD1772
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100n | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C16 |
| 4 | 470 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 3 | 100u/16 V | Capacitors_THT:CP_Radial_D7.5mm_P2.50mm | C14, C17, C18 |
| 3 | 1N4148 | Diodes_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3, D4 |
| 3 | 2K2 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R7, R8 |
| 3 | MountingHole_1mm | SINCLAIR:MountingHole_1mm | SLOT, SLOT, SLOT |
| 2 | 10K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11, R12 |
| 2 | 680 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R10 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP1, JP2 |
| 2 | Jumper_NC_Dual | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP6, JP7 |
| 2 | LED | LEDs:LED_D5.0mm | D1, D5 |
| 2 | Mounting_Hole | MountingHole:MountingHole_3mm | MK2, MK3 |
| 2 | SW_DPST_x2 | Buttons_Switches_THT:SW_TH_Tactile_Omron_B3F-10xx | SW1, SW2 |
| 1 | 100p | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C15 |
| 1 | 270 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9 |
| 1 | 33p | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C13 |
| 1 | 6264 | Housings_DIP:DIP-28_W15.24mm_LongPads | IC3 |
| 1 | 74LS00 | Housings_DIP:DIP-14_W7.62mm_LongPads | IC9 |
| 1 | 74LS06 | Housings_DIP:DIP-14_W7.62mm_LongPads | IC5 |
| 1 | 74LS126 | Housings_DIP:DIP-14_W7.62mm_LongPads | IC6 |
| 1 | 74LS175 | Housings_DIP:DIP-16_W7.62mm_LongPads | IC8 |
| 1 | 74LS27 | Housings_DIP:DIP-14_W7.62mm_LongPads | IC10 |
| 1 | 74LS374 | Housings_DIP:DIP-20_W7.62mm_LongPads | IC7 |
| 1 | 8.000Mhz | Crystal:Crystal_HC18-U_Vertical | Y1 |
| 1 | AT28C256 | Housings_DIP:DIP-28_W15.24mm_LongPads | IC2 |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | JP4 |
| 1 | Conn_02x02_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | JP5 |
| 1 | Conn_02x13_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x13_P2.54mm_Vertical | J3 |
| 1 | Conn_02x17_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x17_P2.54mm_Vertical | J2 |
| 1 | DB9_Male | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J4 |
| 1 | GAL20V8 | Housings_DIP:DIP-24_W7.62mm_LongPads | IC4 |
| 1 | GAL22V10 | Housings_DIP:DIP-24_W7.62mm_LongPads | IC11 |
| 1 | L7805 | TO_SOT_Packages_THT:TO-220-3_Vertical | IC12 |
| 1 | Mounting_Hole_PAD | MountingHole:MountingHole_3mm_Pad_Via | MK1 |
| 1 | SW_DIP_x03 | Button_Switch_THT:SW_DIP_SPSTx03_Slide_6.7x9.18mm_W7.62mm_P2.54mm_LowProfile | SW3 |
| 1 | WD1772 | Housings_DIP:DIP-28_W15.24mm_LongPads | IC1 |
| 1 | ZX_Spectrum_Connector_GENERIC_SORTED | SINCLAIR:ZX_CONN | J1 |
The 67 most common of 69 parts.
Questions
How big is the Plusd PCB?
It measures 99.1 × 99.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Plusd use?
69 parts, built around the 74LS126PC, 74LS00SC, 74LS175PC and 74LS27P-E. 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 Plusd KiCad files?
From the alvaroalea/plusD-clone repository on GitHub, at the commit this page was made from: the board is plusd.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Plusd design in my own project?
Its repository states no licence, so its author keeps all rights: ask alvaroalea before reusing the design.
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