2 layers123.2 × 77.5 mm
Boards using the 74HC27D
18 boardsBoards in 12 GitHub repositories, designed in KiCad, that use the 74HC27D by Nexperia (-40℃~+125℃ 1.5V~4.2V 1.9V~2V、3.98V~4.32V、4.4V~4.5V、5.48V~5.81V、5.9V~6V 100mV、100mV、100mV、260mV、260mV 18ns@4.5V,50pF 2V~6V 2uA 3 3 5.2mA 5.2mA 500mV~1.8V 74HC Series NOR Gate SOIC-14 Logic Gates ROHS). See how each wires it, with its parts, size, README and files; the 74HC27D’s symbol, footprint and pinout are on its own page.
- 2 layers51 × 60.5 mm
Gameboy 512KB Cart Discrete Logic PLCC
sillyhatday/GAMEBOY-74XX-512KB-PLCC
MBC1 compatible cart using 74 series logic with reflashable storage
12 parts2 - 2 layers299.7 × 198.1 mm
Cisc-8
nailed-barnacle/Cisc-8-ttl-processor
A cut-down version of the 8080 processor using HCTTL and including a discrete ALU and instruction decoder
319 parts1MIT - 4 layers100 × 175 mm
- 2 layers194.3 × 174 mm
- 2 layers
- 2 layers
6502-electrical draft
jwvdvuurst/6502-board
A W65C02S computer board with bank-switched SRAM, a ROM monitor and Tiny BASIC, and a Raspberry Pi Pico USB terminal bridge.
53 parts - 4 layers100 × 100 mm
- 2 layers87.6 × 58.1 mm
- 2 layers213.1 × 129 mm
- 2 layers
- 4 layers406.4 × 254 mm
- 4 layers406.4 × 254 mm
- 4 layers406.4 × 254 mm
- 4 layers406.4 × 254 mm
- 4 layers406.4 × 254 mm
- 4 layers406.4 × 254 mm
- 2 layers99.1 × 99.1 mm
Computer
rjw57/simplest-80s-computer
This is my rough scratch repo where I keep experiments to do with desiging 80s computer peripherals. It is not in any sensible shape to be used by others yet, apologies.
39 parts