PALC16R8-35PI

Overview

The PALC16R8-35PI is a Cypress Semiconductor PAL-type programmable logic device in a 20-pin PDIP package. It features 16 inputs and 8 registered outputs with 64 macrocells. The device operates at a maximum clock frequency of 18 MHz with a 25 ns propagation delay. It utilizes CMOS technology and includes one external clock input. The component is designed for high-speed logic applications requiring registered output functionality within a standard DIP form factor.

Feature Summary

• PAL-type architecture with 16 dedicated inputs and 8 registered outputs
• 25 ns typical propagation delay and 18 MHz maximum clock frequency
• CMOS technology with single external clock input capability
• 20-pin Plastic Dual In-Line Package (PDIP)

Applications

• Registered data path buffering
• State machine implementation
• Address decoding with registered outputs

Part Context

This part belongs to the PALC series, which represents the electrically erasable and reprogrammable version of the classic PAL16R8 logic device. Implemented in a 0.65 micron CMOS process, this series was introduced to provide EPROM-like flexibility while achieving static RAM speed ranges. The 'C' suffix denotes the CMOS electrical characteristics compared to earlier bipolar variants.

Replacement Considerations

Direct pin-compatible replacements include the PAL16R8-35PI (bipolar version) or other PAL16R8 derivatives from manufacturers like Lattice or Atmel. Verify voltage levels and output drive strength when substituting bipolar parts with CMOS equivalents.