The PAL16L8B-4CN is a Programmable Array Logic (PAL) device designed for implementing custom logic functions. While the manufacturer is unspecified, this device offers a versatile solution for various digital circuit applications. It allows engineers to program specific logic functions by configuring the internal AND array, offering a streamlined alternative to using numerous discrete logic gates.

Applications

• Address Decoding: Generates chip select signals in memory systems to enable specific memory locations.
• Peripheral Controllers: Implements custom control logic for interfacing with various peripheral devices.
• Timing and Control Circuits: Creates timing signals and control sequences for coordinating operations within a digital system.
• Data Routing: Directs data flow based on input conditions.
• State Machine Logic: Designs and implements simple state machines for sequential control applications.

Features

• Programmable AND Array: Allows for the implementation of custom logic functions by programming the AND array connections.
• Fixed OR Array: Combines the outputs of the AND gates to produce the final output signals.
• TTL Compatible: Operates with standard TTL voltage levels, facilitating easy integration with other TTL-based components.
• Low-Power Consumption: Minimizes power consumption, suitable for battery-powered and energy-efficient applications.
• 10 Input Pins: Offers flexibility in implementing complex logic functions.
• 8 Output Pins: Provides sufficient output signals for controlling various devices and systems.
• 24-Pin DIP Package: Standard Dual In-line Package ensures easy insertion and soldering onto circuit boards.

Benefits

• Flexibility: Programmability allows for easy modification and adaptation of logic functions to changing requirements.
• Reduced Chip Count: Replaces numerous discrete logic gates, simplifying circuit designs and reducing board space.
• Simplified Design Process: Streamlines the design process compared to using discrete components, enabling faster development cycles.
• Cost-Effective: Offers a cost-efficient solution for implementing custom logic functions compared to using multiple discrete components.

Additional Details

The PAL16L8B-4CN is programmed using a PAL programmer, which selectively blows fuses in the AND array to define the desired logic functions. Specific programming voltages and timing parameters are dependent on the specific programmer and manufacturer's specifications. The "-4" in the part number suggests a specific speed grade. 'L' in the name signifies that the outputs are active Low. '16' indicates 16 inputs and '8' indicates 8 outputs. Propagation delay is around 25ns.