The ATF22V10C-5JC is a 5 ns EE PLD from Microchip's 22V10 family, offering 10 macrocells in a 28-PLCC package. The 5 ns pin-to-pin propagation delay means registered outputs can clock at up to 200 MHz in a typical synchronous design — fast enough for address decoding, state machines, and glue logic in 5 V systems where a CPLD would be overkill.
Obsolete — plan for a replacement
Microchip lists the ATF22V10C-5JC as obsolete. The 28-PLCC footprint is specific — a direct pin-compatible drop-in from another vendor would need to match the J-lead PLCC land pattern and the 5 V I/O levels.
28-PLCC footprint and 5 V supply rail
The device is supplied in a 28-LCC with J-leads (PLCC), measuring 11.51 x 11.51 mm. It runs on a single 5 V supply — no core or I/O voltage split. The 10 macrocells are electrically erasable, so the part can be reprogrammed in-system if the board provides a JTAG or proprietary programming interface. Surface-mount assembly with the J-lead package requires a reflow profile compatible with PLCC solder joints; the leads are on the underside, so visual inspection after reflow is limited.