GAL16V8D-25LPN

Programmable Logic Device Pld Overview

The GAL16V8D-25LPN is a discontinued Simple Programmable Logic Device (SPLD) from Lattice Semiconductor. It utilizes E2CMOS technology and features an architecture with 16 inputs, 8 outputs, and 64 product terms. The device operates at a maximum propagation delay of 25 ns and supports a maximum clock frequency of 37 MHz. It is housed in a 20-pin Plastic DIP package and is designed for 5V operation within a commercial temperature range of 0°C to +75°C.

Programmable Logic Device Pld Feature Summary

• E2CMOS Technology: Electrically erasable floating gate technology enabling high-speed reprogramming (<100ms erase time) and 20-year data retention.
• Reconfigurable Architecture: Eight Output Logic Macrocells (OLMCs) support Registered, Complex, and Simple modes to emulate various PAL devices.
• Active Pull-ups: All pins feature active pull-up resistors to minimize latch-up potential caused by input undershoots or output overshoots.
• Electronic Signature: Includes 64 bits of reprogrammable memory for user-defined identification codes or revision tracking.

Programmable Logic Device Pld Applications

• DMA Control
• State Machine Control
• High Speed Graphics Processing
• Standard Logic Speed Upgrade

Programmable Logic Device Pld Procurement Notes

This component has been officially discontinued per Product Change Notification (PCN) #13-10. No new production units are available from the manufacturer. Verification of availability is restricted to existing surplus inventory held by third-party distributors. Designers must confirm the functional integrity of any remaining stock prior to integration.

Programmable Logic Device Pld Selection Notes

Selection requires compatibility with 5V logic levels and a 20-pin PDIP footprint. The -25 speed grade provides a 25 ns maximum propagation delay. Users must ensure their programming hardware supports the specific E2CMOS architecture and that the design fits within the 64-product-term constraint across eight macrocells.

Programmable Logic Device Pld Part Context

The GAL16V8D series represents the low-power variant of the Generic Array Logic family. The 'D' suffix denotes the Low Power version, while 'PN' indicates a lead-free Plastic DIP package. This part belongs to a broader lineage of PLDs that were widely used for glue logic before being superseded by more dense programmable logic solutions.

Programmable Logic Device Pld Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation due to the discontinuation status. Replacement strategies typically involve migrating to modern CPLD or FPGA families with pin-compatible footprints or utilizing adapter boards.

Programmable Logic Device Pld FAQ

What is the maximum operating voltage for the GAL16V8D-25LPN?

The recommended operating supply voltage (VCC) is +4.75V to +5.25V for commercial grade devices.

How many product terms are available per output macrocell?

In registered mode, registered outputs have eight product terms, while I/O configurations have seven. In complex and simple modes, outputs generally utilize up to eight product terms.

Can the GAL16V8D-25LPN be erased electrically?

Yes, the device uses E2CMOS technology which allows for high-speed electrical erasure in less than 100 milliseconds.