ATF16V8C-7XC Equivalent & Substitute Parts

Part Overview

The ATF16V8C-7XC is a 16V8 Programmable Logic Device (PLD) IC featuring 8 macrocells with 7.5 ns propagation delay, housed in a 20-TSSOP surface mount package. This device operates at 5V input voltage and is classified as an EE PLD (Electrically Erasable Programmable Logic Device). The ATF16V8C-7XC is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

ATF16V8C-7XC

Microchip TechnologyIn Stock: 897ATF16V8C-7XC Datasheet

Current PartRFQ

ATF16V8CZ-15XU

Microchip TechnologyIn Stock: 1819ATF16V8CZ-15XU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF16V8C-7XC is determined by the following critical parameters that must remain constant or compatible:

Mandatory Matching Parameters:

• Series: 16V8
• Number of Macrocells: 8
• Programmable Type: EE PLD
• Voltage - Input: 5V
• Package / Case: 20-TSSOP
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Speed: The substitute may have equal or slower (higher ns value) propagation delay, as this does not compromise functional compatibility in most applications
• Product Status: Active status is preferred for long-term availability
• RoHS Compliance: Newer revisions may offer improved compliance status
• Moisture Sensitivity Level: May vary based on manufacturing process updates

The ATF16V8CZ-15XU meets all mandatory matching criteria while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ATF16V8CZ-15XU is the qualified substitute for the obsolete ATF16V8C-7XC. Selection of this substitute is based on the following engineering criteria:

Functional Compatibility: Both devices share identical core specifications: 16V8 series architecture, 8 macrocells, EE PLD programmable type, 5V input voltage, and 20-TSSOP package. The devices are pin-compatible and functionally equivalent at the logic level.

Speed Consideration: The ATF16V8CZ-15XU operates at 15 ns propagation delay compared to the 7.5 ns of the original part. This represents a 2x increase in delay. Substitution is valid only when system timing margins accommodate this slower speed specification. Critical timing paths must be re-evaluated during design validation.

Product Status and Availability: The ATF16V8CZ-15XU maintains active product status with verified programmability and higher inventory availability, ensuring long-term procurement viability compared to the obsolete ATF16V8C-7XC.

Compliance Improvements: The substitute achieves ROHS3 compliance and EAR99 classification, offering regulatory advantages over the non-compliant original part. Both devices maintain REACH Unaffected status.

Moisture Handling: The substitute specifies MSL 2 (1 Year) versus MSL 1 (Unlimited) for the original. Storage and handling procedures must align with the 1-year moisture sensitivity window for the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the ATF16V8CZ-15XU directly replace the ATF16V8C-7XC without design changes?

A: Direct pin-compatible substitution is possible. However, the 15 ns propagation delay of the substitute must be validated against system timing requirements. If the original 7.5 ns speed was critical to meeting setup/hold time margins, timing analysis is required before implementation.

Q: Are there any package or mounting differences between these parts?

A: No. Both devices use identical 20-TSSOP surface mount packaging with 0.173" width (4.40mm). PCB footprints and reflow profiles remain unchanged.

Q: What is the impact of the RoHS compliance difference?

A: The ATF16V8CZ-15XU achieves ROHS3 compliance, meeting current environmental regulations. The original ATF16V8C-7XC is non-compliant. For new designs or systems requiring RoHS certification, the substitute is the appropriate choice.

Q: How does the Moisture Sensitivity Level (MSL) difference affect handling?

A: The ATF16V8C-7XC (MSL 1) has unlimited shelf life. The ATF16V8CZ-15XU (MSL 2) requires storage in controlled humidity conditions with a 1-year floor life limit. Proper moisture barrier packaging and bake-out procedures must be followed if the part exceeds the 1-year window.

Q: Is the ATF16V8CZ-15XU programmable with the same tools and algorithms?

A: Both devices are EE PLD types within the 16V8 series. Microchip verification confirms programmability compatibility. Existing design files and programming algorithms are compatible without modification.

Q: What inventory considerations apply to this substitution?

A: The ATF16V8CZ-15XU maintains active status with 1720 pcs in stock, compared to 837 pcs for the obsolete ATF16V8C-7XC. Long-term procurement should prioritize the substitute to ensure continued availability.