GAL16V8 Generic Array Logic DIP-20 (GAL16V8 DIP IC)

The GAL16V8 is a high-performance CMOS Generic Array Logic device that combines a programmable AND array with a fixed OR array. This IC is designed to be a direct, high-speed, and electrically erasable (EE) replacement for nearly all 20-pin PAL devices. It features an Output Logic Macrocell (OLMC) for each output, which allows the user to configure each pin as a combinatorial, registered, or bidirectional port. This flexibility makes it possible to implement complex logic functions and state machines with significantly lower power consumption compared to older bipolar PAL technology.

This IC is primarily used for glue logic, memory decoding, and custom sequential logic in digital systems. It is an essential component for advanced Arduino electronics projects in India involving legacy computer hardware repair, custom CPU-to-peripheral interfaces, and educational learning of Programmable Logic Devices (PLD) and hardware description languages like ABEL or CUPL.

Key Features

• Electrically Erasable (EE) floating gate technology
• Replaces all common 20-pin PAL16L8, 16R4, 16R6, and 16R8 devices
• Extremely high-speed performance (up to 7ns propagation delay)
• Output Logic Macrocells (OLMC) for flexible pin configuration
• Low power consumption (typically 45mA to 90mA active)
• 100 percent functional testing by the manufacturer
• Data retention exceeds 20 years
• Security cell to prevent unauthorized logic pattern copying

Specifications

• IC Type = Generic Array Logic (GAL)
• Logic Family = CMOS / TTL Compatible
• Propagation Delay = 7ns to 25ns (Depending on speed grade)
• Supply Voltage (VCC) = 4.75V to 5.25V (5V Typical)
• Number of Inputs = 10 Dedicated (plus 8 Feedback paths)
• Number of Outputs = 8 Configurable (OLMC)
• Package Type = Plastic DIP
• Number of Pins = 20
• Mounting Type = Through-Hole
• Operating Temperature = 0 to 75 degrees Celsius

Interfaces

• PIN 1 (CLK/IN) = Clock Input for Registered Mode or Dedicated Input
• PIN 2 to 9 (IN) = Dedicated Logic Inputs
• PIN 10 (GND) = Ground (0V)
• PIN 11 (OE/IN) = Output Enable for Registered Mode or Dedicated Input
• PIN 12 to 19 (I/O) = Configurable Macrocell Outputs or Bidirectional Pins
• PIN 20 (VCC) = Positive Supply Voltage (5V)