Overview
The P8251A is an UART made by AMD in a CDIP-28 package with 28 pins. 1 4.5V~5.5V Automatic error detection CDIP-28 Interface - Specialized.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LD8251A, from EasyEDA) and its footprint (EasyEDA_Cloud:PDIP-28_L35.0-W7.3-P2.54-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C3312590).
Symbol
Footprint
Order codes
1- P8251ALCSC C3312590
Pinout
28| Pin | Name | Type |
|---|---|---|
| 1 | D2 | Unspecified |
| 2 | D3 | Unspecified |
| 3 | RXD | Unspecified |
| 4 | GND | Unspecified |
| 5 | D4 | Unspecified |
| 6 | D5 | Unspecified |
| 7 | D6 | Unspecified |
| 8 | D7 | Unspecified |
| 9 | TXC# | Unspecified |
| 10 | WR# | Unspecified |
| 11 | CS# | Unspecified |
| 12 | C/D# | Unspecified |
| 13 | RD# | Unspecified |
| 14 | RXRDY | Unspecified |
| 15 | TXRDY | Unspecified |
| 16 | SYNDEET/BD | Unspecified |
| 17 | CTS# | Unspecified |
| 18 | TXEMPTY | Unspecified |
| 19 | TXD | Unspecified |
| 20 | CLK | Unspecified |
| 21 | RESET | Unspecified |
| 22 | DSR# | Unspecified |
| 23 | RTS# | Unspecified |
| 24 | DTR# | Unspecified |
| 25 | RXC# | Unspecified |
| 26 | VCC | Unspecified |
| 27 | D0 | Unspecified |
| 28 | D1 | Unspecified |
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Is there a KiCad symbol and footprint for the P8251A?
Yes. The symbol is EasyEDA_Cloud:LD8251A and the footprint EasyEDA_Cloud:PDIP-28_L35.0-W7.3-P2.54-LS7.8-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the P8251A?
CDIP-28, with 28 pins. Its footprint is drawn on this page.
Where is the P8251A datasheet?
AMD publishes it: the Datasheet link on this page opens it.
Where can I order the P8251A?
JLCPCB lists it as part C3312590, with 0 in stock; the sellers' links on this page open their listings.
What can replace the P8251A?
Parts like it in the library: the N8251A by AMD, the LD8251A by Rochester Electronics, LLC and the ID8251AB by AMD. Check their datasheets: a part that fits the footprint may still differ in its ratings.
