Isa i2c
About the Isa i2c PCB
Isa i2c is an open source PCB design by miselin, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 99.7 × 78.3 mm, with 18 components from 13 distinct parts.
Other key parts include the SN74AHC1G04DBVR, SN74HC245N, PCF8584T/2,518 and CD74HCT688E. By type, the board carries 6 resistors, 5 capacitors, 4 ICs, 2 connectors and 1 switch.
From the project
The M88 Computer
This repository contains the KiCad project(s) and ROM source code for the M88 computer project. Learn more about the project at https://m88.computer.
The top-level KiCad project is the main KiCad project for the M88's Micro-ATX motherboard.
The isai2c` directory contains a KiCad project for an ISA-to-I2C bridge, designed around readily available parts with only one SMT IC.
Main components on the Isa i2c
Isa i2c bill of materials (BOM)
18 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN74AHC1G04DBVR 74AHC1G04 | SOT-23-5 | U1 |
| 1 | SN74HC245N 74HC245 | DIP-20_W7.62mm | U2 |
| 1 | PCF8584T/2,518 PCF8584 | SOIC-20W_7.5x12.8mm_P1.27mm | U3 |
| 1 | CD74HCT688E 74HCT688 | DIP-20_W7.62mm | U7 |
| 1 | L77SDE09SA4CH4F DE9_Receptacle | L77SDE09SA4CH4F | J1 |
| 1 | S4B-PH-K-S(LF)(SN) Conn_01x04 | JST_PH_S4B-PH-K_1x04_P2.00mm_Horizontal | J10 |
| 1 | 418117270908 SW_DIP_x08 | SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | SW1 |
| 3 | K104M15X7RF53K2 0.1 uF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2, C7 |
| 1 | ESW476M016AC3AA 10-100uF 16V Electrolytic | CP_Radial_D5.0mm_P2.00mm | C3 |
| 1 | CC0603KRX7R8BB104 0.1 uF | C_0603_1608Metric | C4 |
| 2 | RNS14F2201A520NH 2.2k 1/8W | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2 |
| 2 | MFR25SFRF52-47R 47 1/8W | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4, R5 |
| 2 | 4609X-101-103LF 10k | R_Array_SIP9 | RN1, RN2 |
Isa i2c design files
The KiCad project lives in the miselin/M88 repository on GitHub; these links point at the commit this page was built from.
- Layoutisa_i2c/isa_i2c.kicad_pcb
- Schematicisa_i2c/isa_i2c.kicad_sch
Isa i2c: common questions
How big is the Isa i2c PCB?
The Isa i2c measures 99.7 × 78.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Isa i2c?
18 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the Isa i2c design files?
From the miselin/M88 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Isa i2c design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which miselin chose for the repository.
