GAL16V8D-25LP Equivalent & Substitute Parts

Part Overview

The GAL16V8D-25LP is a GAL®16V8 Programmable Logic Device (PLD) IC featuring 8 macrocells with 25 ns propagation delay, housed in a 20-PDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The GAL16V8D-25LP maintains electrical and mechanical compatibility with active alternative solutions from Microchip Technology that offer improved performance characteristics and current product support.

Substiute Parts

GAL16V8D-25LP

Lattice Semiconductor CorporationIn Stock: 16771GAL16V8D-25LP Datasheet

Current PartRFQ

ATF16V8BQL-15PU

Microchip TechnologyIn Stock: 3121ATF16V8BQL-15PU Datasheet

MFR RecommendedRFQ

ATF16V8C-7PU

Microchip TechnologyIn Stock: 1915ATF16V8C-7PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GAL16V8D-25LP is determined by the following critical parameters:

• Programmable Type: Must be EE PLD (Electrically Erasable Programmable Logic Device)
• Number of Macrocells: Must be 8 macrocells
• Package / Case: Must be 20-DIP (0.300", 7.62mm)
• Supplier Device Package: Must be 20-PDIP
• Mounting Type: Must be Through Hole

The identified substitute parts (ATF16V8BQL-15PU and ATF16V8C-7PU) satisfy all mandatory substitution criteria. Both alternatives are manufactured by Microchip Technology and maintain identical macrocell count, package configuration, and mounting methodology. The substitutes offer improved speed performance (15 ns and 7.5 ns respectively) compared to the original 25 ns specification, providing enhanced timing margins for circuit operation.

Parameter Comparison

Engineering Selection Recommendations

Both ATF16V8BQL-15PU and ATF16V8C-7PU are qualified substitutes for the GAL16V8D-25LP based on electrical and mechanical compatibility. Selection between these alternatives should be based on the following factors:

ATF16V8BQL-15PU provides a direct performance upgrade with 15 ns speed while maintaining active product status and ROHS3 compliance. This option offers a balanced approach for applications requiring improved timing performance without extreme speed requirements.

ATF16V8C-7PU delivers the fastest propagation delay at 7.5 ns, suitable for timing-critical applications. This part maintains active product status and ROHS3 compliance, with current manufacturing support from Microchip Technology.

Both substitutes are ROHS3 compliant, addressing environmental and regulatory requirements that the obsolete GAL16V8D-25LP does not meet. The transition from the Lattice Semiconductor GAL®16V8 series to the Microchip Technology 16V8 series maintains functional equivalence while providing access to actively supported components with improved compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can ATF16V8BQL-15PU and ATF16V8C-7PU be used interchangeably with GAL16V8D-25LP?

A: Yes, both parts are electrically and mechanically compatible substitutes. They share identical macrocell count (8), package configuration (20-PDIP), and mounting type (Through Hole). The primary difference is improved speed performance, which provides enhanced timing margins rather than creating incompatibility.

Q: What is the significance of the speed difference between 25 ns, 15 ns, and 7.5 ns?

A: Speed specification indicates propagation delay through the device logic. Lower values (faster speeds) represent improved performance. The GAL16V8D-25LP operates at 25 ns, while ATF16V8BQL-15PU operates at 15 ns and ATF16V8C-7PU at 7.5 ns. Substituting with faster parts does not create compatibility issues; it only improves circuit timing performance.

Q: Are there packaging differences between these parts?

A: No. All three parts use identical 20-DIP (0.300", 7.62mm) packaging with 20-PDIP supplier device package designation. They are pin-compatible and can be used in the same PCB footprint without modification.

Q: What is the difference between RoHS non-compliant and ROHS3 compliant status?

A: ROHS3 compliance indicates the substitute parts meet current Restriction of Hazardous Substances directives, making them suitable for applications with environmental and regulatory requirements. The GAL16V8D-25LP does not meet these standards due to its obsolete status.

Q: Are both substitute parts currently available?

A: Yes. ATF16V8BQL-15PU has 3015 pieces in stock, and ATF16V8C-7PU has 1900 pieces in stock, both from active manufacturing by Microchip Technology.