PAL16R4ACN

Programmable Logic Device Pld Overview

The PAL16R4ACN is a Programmable Array Logic (PAL) device manufactured by Monolithic Memories (MMI). It belongs to the PAL16R4 family, featuring an OT PLD architecture with TTL technology. The component provides 16 inputs and 4 registered outputs within a 20-pin PDIP package. It operates at a maximum clock frequency of 28.5 MHz and requires a nominal 5 V supply voltage. The device is designed for high-speed logic applications requiring registered output capabilities.

Programmable Logic Device Pld Feature Summary

• PAL-type architecture with 16 inputs and 4 registered outputs
• TTL technology compatible with standard logic levels
• Maximum operating frequency of 28.5 MHz
• 20-pin Plastic Dual In-line Package (PDIP)

Programmable Logic Device Pld Applications

• Registered data bus interfaces
• State machine implementations
• High-speed combinatorial logic with registered outputs

Programmable Logic Device Pld Procurement Notes

Verify the manufacturer as Monolithic Memories or authorized successor entities. Confirm the package type is PDIP-20 and the suffix 'ACN' indicates specific speed/temperature grades if documented. Check RoHS compliance status as older MMI parts may not be compliant. Ensure the registered output configuration matches the design requirements.

Programmable Logic Device Pld Selection Notes

Select this part when 16 inputs and 4 registered outputs are required in a PAL format. Compare against PAL16R6 or PAL16R8 if more outputs are needed. Verify that the 5V TTL interface matches the system logic levels. Consider the 28.5 MHz max frequency for timing closure in synchronous designs.

Programmable Logic Device Pld Part Context

The PAL16R4ACN is part of the classic PAL16R4 series from Monolithic Memories. This series was widely used before CPLDs became prevalent. The 'A' typically denotes speed grade, and 'CN' indicates the PDIP package. It serves as a direct replacement for legacy designs using standard PAL logic.

Programmable Logic Device Pld Replacement Considerations

Direct pin-to-pin replacements include other manufacturers' PAL16R4 variants such as those from National Semiconductor or Lattice, provided the electrical characteristics match. Verify output drive strength and propagation delays when substituting.