ATF20V8BQL-15PI Equivalent & Substitute Parts

Part Overview

The ATF20V8BQL-15PI is a 20V8 Programmable Logic Device (PLD) IC manufactured by Microchip Technology, featuring 8 macrocells and 15 ns propagation delay in a 24-PDIP package. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. The part operates at 5V input voltage and is designed for through-hole mounting applications requiring programmable logic functionality.

Substiute Parts

ATF20V8BQL-15PI

Microchip TechnologyIn Stock: 1651ATF20V8BQL-15PI Datasheet

Current PartRFQ

ATF22V10CQZ-20PU

Microchip TechnologyIn Stock: 3019ATF22V10CQZ-20PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ATF22V10CQZ-20PU qualifies as a functional substitute for the ATF20V8BQL-15PI based on the following allowed parameters:

• Package Compatibility: Both parts use 24-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical socket compatibility
• Voltage Specification: Both operate at 5V input voltage
• Programmable Type: Both are EE PLD (Electrically Erasable Programmable Logic Device) architectures
• Manufacturer: Both are manufactured by Microchip Technology, ensuring consistent design philosophy and programming methodology
• Mounting Type: Both utilize through-hole mounting, maintaining PCB integration compatibility

The ATF22V10CQZ-20PU provides enhanced capability with 10 macrocells versus 8 macrocells in the original part, and operates at 20 ns speed versus 15 ns. These improvements represent forward compatibility for logic density and performance requirements.

Parameter Comparison

Engineering Selection Recommendations

The ATF22V10CQZ-20PU is the designated substitute for the obsolete ATF20V8BQL-15PI. Selection of this substitute is justified by:

• Product Status: The original ATF20V8BQL-15PI is obsolete, while the ATF22V10CQZ-20PU maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The substitute achieves ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the original part is RoHS non-compliant
• Electrical Compatibility: Identical 5V input voltage specification and EE PLD architecture ensure functional compatibility with existing circuit designs
• Physical Compatibility: Identical 24-DIP package and through-hole mounting enable direct socket replacement without PCB redesign
• Enhanced Capability: The 10-macrocell architecture provides increased logic density compared to the 8-macrocell original, supporting design scalability

Frequently Asked Questions (FAQ)

Q: Can the ATF22V10CQZ-20PU be used as a direct replacement in existing designs?

A: Yes. Both parts share identical 24-DIP package dimensions, through-hole mounting, and 5V input voltage specifications. The substitute can be installed in the same socket without PCB modification. However, logic programming must be verified for compatibility with the increased macrocell count and different speed specification.

Q: What is the difference in speed between these parts?

A: The ATF20V8BQL-15PI operates at 15 ns propagation delay, while the ATF22V10CQZ-20PU operates at 20 ns. The substitute is 5 ns slower. Applications with strict timing requirements must validate that 20 ns delay meets system specifications.

Q: Why does the substitute have more macrocells?

A: The ATF22V10CQZ-20PU provides 10 macrocells versus 8 in the original part. This increased logic density allows implementation of more complex programmable functions within the same physical package, supporting design evolution and feature expansion.

Q: Are there packaging differences?

A: Both parts use 24-DIP (0.300", 7.62mm) through-hole packaging. The substitute is supplied in tube packaging, while the original part packaging is not specified. This does not affect electrical or mechanical compatibility.

Q: What about RoHS compliance?

A: The original ATF20V8BQL-15PI is RoHS non-compliant. The substitute ATF22V10CQZ-20PU is ROHS3 compliant, meeting current environmental regulations for new designs and manufacturing processes.