
Chameleon ram card
Seequa-Computer-Preservation/chameleon_ramplus
A reproduction of the original Chameleon RAMPlus board
Texas InstrumentsExtended
0℃~+70℃ 4.75V~5.25V 400uA 74LS 8mA 9 Parity Generator/Checker PDIP-14 Parity Generators and Checkers ROHS
The SN74LS280N is a parity Generators And Checker made by Texas Instruments in a PDIP-14 package with 14 pins. 0℃~+70℃ 4.75V~5.25V 400uA 74LS 8mA 9 Parity Generator/Checker PDIP-14 Parity Generators and Checkers ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS280, from KiCad's library) and its footprint (Package_DIP:DIP-14_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. 4 are in stock at JLCPCB (part C2871214). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | G | Input |
| 2 | H | Input |
| 3 | NC | Not connected |
| 4 | I | Input |
| 5 | Even | Output |
| 6 | Odd | Output |
| 7 | GND | Power in |
| 8 | A | Input |
| 9 | B | Input |
| 10 | C | Input |
| 11 | D | Input |
| 12 | E | Input |
| 13 | F | Input |
| 14 | VCC | Power in |

Seequa-Computer-Preservation/chameleon_ramplus
A reproduction of the original Chameleon RAMPlus board
Yes. The symbol is 74xx:74LS280 and the footprint Package_DIP:DIP-14_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
PDIP-14, with 14 pins. Its footprint is drawn on this page.
Texas Instruments publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C2871214, with 4 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the CD74HC280E(LX) by lingxingic, the SN74LS280N(LX) by lingxingic, the 74F280PC by onsemi and the DM74AS280N by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.