25 ns registered PAL for legacy 5 V logic replacement
The PAL16R8A4CNL is an electrically erasable PAL device from AMD (Xilinx) with 8 registered macrocells and a 25 ns propagation delay — the timing budget that governs whether it can replace a slower PAL in an existing board without retiming the clock tree.
20-PLCC J-lead — footprint and reflow considerations
Housed in a 20-lead PLCC with J-bend leads (20-LCC per JEDEC MS-018), the PAL16R8A4CNL sits in a 9×9 mm body — the standard PLCC-20 footprint that mates with a socket or solders directly to the board. The J-lead package has a seated height of roughly 3.5 mm and the leads are coplanar within 0.10 mm for the PLCC family — check the MSL before the reflow profile;.
Active production — sourcing posture
RoHS non-compliant per the current listing — the lead finish on the J-leads is likely tin-lead solder, so verify the board's assembly process if it requires Pb-free reflow.