8-macrocell EE PLD in a 20-SOIC package
The Microchip ATF16V8BQL-15SU is an electrically erasable programmable logic device (EE PLD) from the 16V8 series, packing 8 macrocells in a 20-SOIC (0.295", 7.50mm width) surface-mount package.
15 ns speed grade — timing margin on a 5V bus
The 15 ns speed grade covers the pin-to-pin propagation delay through the logic array. In a typical 5V address-decoding or state-machine application, this sets the window for combinatorial logic settling before the next clock edge. If your system clock runs at 33 MHz or slower, the 15 ns part leaves adequate margin; for faster buses, step to the 10 ns or 7.5 ns siblings in the same 16V8 family.
EE PLD — reprogrammable, no UV eraser needed
The electrically erasable (EE) programmable type means the device can be erased and reprogrammed in a standard programmer or in-system, without a UV eraser. This simplifies prototype iterations and field updates compared to OTP or UV-erasable PLDs. The 8 macrocells support up to 8 registered or combinatorial outputs, configurable as registered, combinatorial, or tri-state.