4 layers19.6 × 9.4 mm
2 layers102.6 × 50.7 mm
Cassette interface
pmonta/retrocomputing5Board- and chip-level reproductions of classic computing devices
- Size
- 102.6 × 50.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 66
- Pads
- 242
- Tracks, vias
- 544, 18
- Pours
- 15
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Mar 2020
- Updated
- 9 Apr 2020
Overview
Cassette interface is an open-source printed circuit board by pmonta, from the pmonta/retrocomputing repository on GitHub. It is a 2-layer board of 102.6 × 50.7 mm with 23 parts on 66 nets, routed with 544 tracks and 18 vias.
It is built around the 74LS02PC, 74LS10PC and 74LS74PC, with the LM311 among its other parts. Its parts include 10 resistors, 6 ICs, 3 connectors, 2 transistors and 1 capacitor. It belongs with the interfaces and adapters boards of this library.
Main components
4
74LS02PC
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 Gates74LS10PC
PDIP-140℃~+70℃ 3 3.3mA 4.75V~5.25V 74LS Series NAND Gate PDIP-14 Logic GatesonsemiLogic Gates74LS74PC
DIP-140ns 0℃~+70℃ 1 2 20MHz 3.5pF 35ns@5V,50pF 4.5ns 4.75V~5.25V 400uA 74LS Series 8mA 8mA Asynchronous Complementary D-Type Rising Edge Set and Reset DIP-14 Flip FlopsTexas InstrumentsFlip Flops
LM311
SOP-80℃~+70℃ 1 1.7nA 2.4mA 200ns 2mV 36V 45nA 5V~30V TTL、CMOS ±15V SOP-8 Comparators ROHSGcoreComparators
README
README.mdretrocomputing
Board- and chip-level reproductions of classic computing devices
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | local:R_oval | R3, R4, R5, R6 |
| 2 | 100 | local:R_round | R2, R10 |
| 2 | MMI6301 | local:DIP16 | U5, U6 |
| 2 | Q_NPN_EBC | local:Transistor_NPN | Q1, Q2 |
| 2 | audio_jack | local:Jack_audio_3.5mm | J2, J3 |
| 1 | 0.1 uF | local:C_oval | C1 |
| 1 | 100k | local:R_round | R1 |
| 1 | 10k | local:R_round | R9 |
| 1 | 3k | local:R_round | R7 |
| 1 | 47k | local:R_oval | R8 |
| 1 | 74LS02 | local:DIP14 | U1 |
| 1 | 74LS10 | local:DIP14 | U2 |
| 1 | 74LS74 | local:DIP14 | U4 |
| 1 | APPLE1_EDGE | local:APPLE1_EDGE | J1 |
| 1 | LED_ALT | local:LED | D1 |
| 1 | LM311 | local:DIP8 | U3 |
Questions
How big is the Cassette interface PCB?
It measures 102.6 × 50.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cassette interface use?
23 parts, built around the 74LS02PC, 74LS10PC, 74LS74PC and LM311. 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 Cassette interface KiCad files?
From the pmonta/retrocomputing repository on GitHub, at the commit this page was made from: the board is apple-1/boards/cassette-interface/kicad/cassette_interface.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cassette interface design in my own project?
Its repository states no licence, so its author keeps all rights: ask pmonta before reusing the design.
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