PAL20R4-12/B3A

Programmable Logic Device Pld Overview

The PAL20R4-12/B3A is a programmable logic device from Advanced Micro Devices, belonging to the PAL20R4 series. It features a registered output configuration with 20 input pins and 4 registered outputs. The component operates within a standard 5V supply voltage range (4.75V to 5.25V) and supports a maximum propagation delay of 12ns for the -12 speed grade. Manufactured using TTL-compatible process technology, it is housed in a 24-pin ceramic dual in-line package (CDIP). The device is designed for commercial extended temperature applications, functioning reliably between 0°C and 75°C.

Programmable Logic Device Pld Feature Summary

• Registered Output Architecture: Provides 4 registered outputs with 20 inputs for synchronous logic implementation.
• High-Speed Performance: Achieves a maximum propagation delay of 12ns, suitable for timing-critical digital circuits.
• Standard Voltage Operation: Designed for 5V operation with a specified range of 4.75V to 5.25V.
• Robust Packaging: Utilizes a 24-pin CDIP (Ceramic Dual In-Line Package) with through-hole termination.

Programmable Logic Device Pld Applications

• Synchronous state machine design
• Address decoding logic
• Interface buffering and registration
• Digital control systems

Programmable Logic Device Pld Procurement Notes

Verify the specific suffix B3A against manufacturer documentation to confirm package type and temperature rating. Confirm availability status as legacy components may be discontinued or available only through secondary markets. Ensure compatibility with existing PCB footprints for 24-pin CDIP packages during procurement planning.

Programmable Logic Device Pld Selection Notes

Select this component when a registered output PLD is required for synchronous designs. Compare the 12ns delay against system clock requirements. Consider the CDIP package constraints if surface-mount alternatives are preferred. Verify that the 20-input/4-output pin count matches the logic density needs of the application.

Programmable Logic Device Pld Part Context

This part belongs to the AMD PAL20R4 family of registered programmable logic devices. It serves as a fixed-function logic replacement in legacy digital designs. The 'B3A' suffix typically denotes the commercial extended temperature grade and specific packaging variant within the PAL20R4 product line.

Programmable Logic Device Pld Replacement Considerations

Direct replacements include other PAL20R4 variants with compatible speed grades (e.g., PAL20R4-10). Cross-vendor equivalents from Lattice or Atmel should be evaluated for pin-to-pin compatibility and logical equivalence. Verify that the registered output polarity and macrocell configuration match the original design intent.