ATF20V8B-10SC Equivalent & Substitute Parts

Part Overview

The ATF20V8B-10SC is a 20V8 Programmable Logic Device (PLD) IC manufactured by Microchip Technology, featuring 8 macrocells with 10 ns speed performance in a 24-SOIC surface mount package. This device is classified as obsolete product status. Due to its obsolete classification and limited ongoing availability for new designs, identifying functionally compatible substitute parts is essential for system maintenance, legacy product support, and design continuity.

Substiute Parts

ATF20V8B-10SC

Microchip TechnologyIn Stock: 852ATF20V8B-10SC Datasheet

Current PartRFQ

ATF22V10C-10SU

Microchip TechnologyIn Stock: 2003ATF22V10C-10SU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF20V8B-10SC is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use 24-SOIC surface mount packaging with identical physical dimensions (0.295", 7.50mm Width)
• Voltage Compatibility: Input voltage specification of 5V must be maintained
• Speed Performance: 10 ns propagation delay specification must be met or exceeded
• Programmable Type: EE PLD (Electrically Erasable Programmable Logic Device) technology must be preserved
• Manufacturer Consistency: Microchip Technology ATF series devices ensure design and process compatibility

The ATF22V10C-10SU qualifies as a direct substitute based on matching all critical electrical and mechanical parameters while offering enhanced macrocell capacity (10 macrocells versus 8) and improved product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The ATF22V10C-10SU is the qualified substitute for the ATF20V8B-10SC based on the following engineering criteria:

Electrical Compatibility: Both devices operate at 5V input voltage with identical 10 ns speed performance, ensuring functional equivalence in timing-critical applications.

Physical Compatibility: Identical 24-SOIC package dimensions enable direct PCB footprint compatibility without layout modifications.

Product Lifecycle Status: The ATF22V10C-10SU holds Active product status with verified programmability, providing long-term availability and supply chain stability compared to the Obsolete ATF20V8B-10SC.

Regulatory Compliance: The substitute part achieves ROHS3 compliance, addressing modern environmental and regulatory requirements, whereas the main part is RoHS non-compliant.

Enhanced Functionality: The ATF22V10C-10SU provides 10 macrocells versus 8 in the original part, offering additional logic capacity for design flexibility without performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the ATF22V10C-10SU be used as a direct replacement for the ATF20V8B-10SC?

A: Yes. Both devices share identical electrical specifications (5V input, 10 ns speed), package dimensions (24-SOIC), and programmable technology (EE PLD). The substitute part is physically and electrically compatible for PCB integration.

Q: What is the difference in macrocell count, and does it affect compatibility?

A: The ATF22V10C-10SU provides 10 macrocells compared to 8 in the ATF20V8B-10SC. This represents enhanced logic capacity. Designs utilizing 8 or fewer macrocells will function identically on the substitute part. Additional macrocells provide design margin and future expansion capability.

Q: Are there packaging or handling differences between these parts?

A: Both parts use 24-SOIC surface mount packaging with identical physical dimensions. The ATF22V10C-10SU has Moisture Sensitivity Level 2 (1 Year) versus Level 1 (Unlimited) for the original part. Standard MSL 2 handling procedures apply to the substitute part.

Q: Why is the ATF20V8B-10SC classified as obsolete?

A: Obsolete classification indicates the manufacturer has discontinued production and support. The ATF22V10C-10SU maintains Active status, ensuring ongoing availability and technical support from Microchip Technology.

Q: Does the RoHS3 compliance of the substitute part affect compatibility?

A: No. RoHS3 compliance of the ATF22V10C-10SU represents an improvement in environmental and regulatory alignment. It does not affect electrical or mechanical compatibility with existing designs.