MiniNDP
MiniNDP is an open source PCB design by bkw777: a 2-layer, 60 × 34 mm board with 15 components (11 distinct parts). It is built around the 74HCT238D,653, 74HC4040D,653, CY74FCT841CTSOC, AS6C4008-55ZIN and more.
Reproduction & documentation of Node Systems DATAPAC
This repo documents the NODE Systems DATAPAC, rampac, and a new clone, the MiniNDP.
The NODE Systems DATAPAC/rampac was a popular ram disk peripheral for TRS-80 / TANDY Models 100, 102, & 200 computers.
The schematic and PCB below documents the DATAPAC.
rampac is a smaller later version of the same device that uses fewer larger sram chips and replaces most of the discrete logic IC's with a single PLD, but functions exactly the same.
Built around
Parts list
15 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HCT238D,653 HC238 | SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | 74HC4040D,653 HC4040 | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | CY74FCT841CTSOC FCT841 | SOIC-24 | U3 |
| 1 | AS6C4008-55ZIN AS6C4008 | TSOP-II-SOP-32_dual | U4 |
| 1 | 74HC00D,653 HC00 | SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 1 | 302-S401 Conn_02x20_Odd_Even | IDC-Header_2x20_P2.54mm_Vertical | J1 |
| 1 | Keystone 3034 Keystone_3034 | Keystone_3028_3034 | BT1 |
| 2 | FDLL4148 LL4148 | D_MiniMELF | D1, D2 |
| 3 | CL31B105KAHNNNE 1u | C_1206 | C1, C2, C3 |
| 2 | C3216X5R1E476M160DC 47u | C_1206 | C4, C5 |
| 1 | CRGCQ1206F47K 47k | R_1206 | R1 |
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