MiniNDP
MiniNDP is an open source PCB design by bkw777: a 2-layer, 60 × 34 mm board with 18 components (13 distinct parts). It is built around the 74HC161PW,118, 74HC138PW,118, 74HC574PW,118, AS6C4008-55STIN 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
18 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74HC161PW,118 HC161 | TSSOP-16 | U1, U2, U3 |
| 1 | 74HC138PW,118 HC138 | TSSOP-16 | U4 |
| 1 | 74HC574PW,118 HC574 | TSSOP-20 | U5 |
| 1 | AS6C4008-55STIN AS6C4008 | TSOP32-dual | U6 |
| 1 | 74LVC1G32GW,125 1G32 | SOT-353_SC-70-5 | U7 |
| 1 | 74LVC1G79GW,125 1G79 | SOT-353_SC-70-5 | U8 |
| 1 | 302-S401 Conn_02x20_Odd_Even | IDC-Header_2x20_P2.54mm_Vertical | J1 |
| 1 | Keystone_3028 | Keystone_3028_3034_bkw | BT1 |
| 1 | BAV70-7-F BAV70 | SOT-23 | DA1 |
| 1 | TLJW157M010R0200 150u | CP_6032 | C1 |
| 4 | CL21B105KAFNNNE 1u | C_0805 | C2, C3, C4, C5 |
| 1 | RK73B2ATTD102J 1k | R_0805 | R1 |
| 1 | RMCF0805FT47K0 47k | R_0805 | R2 |
More boards in NODE_DATAPAC
NODE DATAPAC 256K bkw remake
255.3 × 43.2 mm28 parts2LCustom license7
NODE DATAPAC 256K historical reproduction
254 × 43.2 mm22 parts2LCustom license7
MiniNDP
60 × 34 mm16 parts2LCustom license7
MiniNDP
60 × 34 mm15 parts2LCustom license7
MiniNDP
60 × 34 mm15 parts2LCustom license7
MiniNDP
60 × 34 mm14 parts2LCustom license7
MiniNDP
60 × 34 mm13 parts2LCustom license7
MiniNDP
72 × 26 mm13 parts2LCustom license7
MiniNDP
51.3 × 18.3 mm12 parts2LCustom license7
MiniNDP 512 Breadboard
157.5 × 55.9 mm9 parts2LCustom license7