The PAL20L8BCJS is a Programmable Array Logic (PAL) device manufactured by Rochester Electronics. As a PAL device, it is a programmable logic device (PLD) used to implement custom logic functions. Rochester Electronics specializes in providing continuing manufacturing and support for discontinued or end-of-life (EOL) semiconductors. This part offers a reliable solution for applications needing this specific logic configuration.

Applications:

• Logic Replacement: Used to replace discrete logic gates, reducing component count and board space.
• Address Decoding: Employed in memory systems for address decoding and chip selection.
• Peripheral Control: Utilized in controlling peripherals and interfacing with external devices.
• State Machines: Implemented as state machines for sequential logic control.
• Custom Logic Functions: Used to create custom logic functions tailored to specific application requirements.

Features:

• Programmable AND Array: Features a programmable AND array that allows users to define custom logic functions.
• Fixed OR Array: Employs a fixed OR array to combine the outputs of the AND gates.
• TTL Compatible Inputs and Outputs: Ensures compatibility with TTL logic devices.
• High Speed Operation: Offers fast propagation delays for high-performance applications.
• 20 Pins: Package size.

Benefits:

• Design Flexibility: Enables users to implement custom logic functions to meet specific application requirements.
• Reduced Component Count: Replaces multiple discrete logic gates with a single device, reducing board space and cost.
• Simplified Design: Simplifies system design by providing a programmable logic solution.
• Improved Performance: Offers high-speed operation for demanding applications.
• Continued Availability: Rochester Electronics ensures continued availability of this device, even when the original manufacturer has discontinued production.

Additional Details:

The PAL20L8BCJS operates within a specified voltage range (typically 5V). The package is a ceramic or plastic DIP (Dual In-line Package). The '20L8' designation indicates the number of inputs and outputs, as well as the logic configuration (Low-active outputs). Programming is done using a PAL programmer and appropriate programming software. Consult the Rochester Electronics website for datasheets and application notes. Key parameters include propagation delay, supply current, and operating temperature range.