10 ns EE PLD — 8 macrocells in 20-TSSOP
The Microchip ATF16V8BQ-10XC is an electrically erasable programmable logic device (EE PLD) from the 16V8 series, offering 8 macrocells with a 10 ns propagation delay. It operates from a single 5V supply and is housed in a 20-TSSOP package (0.173" body width, 4.40 mm pitch). This part is suited for board-level glue logic, address decoding, and simple state-machine replacement where the 10 ns speed provides adequate timing margin for 5V logic families like 74HC or 74LS.
10 ns — timing budget for glue logic
The 10 ns propagation delay (pin-to-pin) sets the maximum combinatorial path the PLD can handle without violating setup times on downstream flip-flops. The EE (electrically erasable) feature allows in-system reprogramming.
Obsolete — plan the BOM transition
For production runs, the 16V8 architecture is widely second-sourced — the ATF16V8B series from Microchip is pin-compatible and functionally equivalent, though package and speed-grade options vary.