ATF16V8CZ-12PC Equivalent & Substitute Parts

Part Overview

The ATF16V8CZ-12PC is a 16V8 Programmable Logic Device (PLD) IC manufactured by Microchip Technology, featuring 8 macrocells with 12 nanosecond propagation delay. This component is packaged in a 20-pin DIP configuration and operates at 5V input voltage. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

ATF16V8CZ-12PC

Microchip TechnologyIn Stock: 1156ATF16V8CZ-12PC Datasheet

Current PartRFQ

ATF16V8CZ-15PU

Microchip TechnologyIn Stock: 1430ATF16V8CZ-15PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF16V8CZ-12PC is determined by strict adherence to the following parameters:

• Series Compatibility: Both parts must belong to the 16V8 series
• Macrocell Count: Exactly 8 macrocells required
• Programmable Type: EE PLD (Electrically Erasable Programmable Logic Device)
• Input Voltage: 5V operation
• Package Configuration: 20-DIP (0.300", 7.62mm) with through-hole mounting
• Speed Tolerance: Substitute speed must be equal to or faster than the original specification

The ATF16V8CZ-15PU meets all substitution criteria. While the speed specification differs (15 ns versus 12 ns), the slower speed of the substitute represents a valid replacement for timing-non-critical applications within the same product family.

Parameter Comparison

Engineering Selection Recommendations

The ATF16V8CZ-15PU is the qualified substitute for the obsolete ATF16V8CZ-12PC. Selection between these parts should be based on the following criteria:

ATF16V8CZ-12PC: Use only for legacy system maintenance where original specifications are mandated and inventory is available. Product status is obsolete with no active manufacturing support.

ATF16V8CZ-15PU: Recommended for new designs and ongoing production. This part maintains active product status with verified programmability. The substitute achieves ROHS3 compliance, whereas the original is RoHS non-compliant. The 3 nanosecond speed differential (15 ns versus 12 ns) is acceptable for applications where timing margins accommodate the slower propagation delay.

Both parts share identical macrocell architecture, input voltage specification, and physical packaging, ensuring functional compatibility at the board level.

Frequently Asked Questions (FAQ)

Q: Can ATF16V8CZ-15PU directly replace ATF16V8CZ-12PC in existing designs?

A: Yes, provided the circuit timing budget accommodates the 15 ns propagation delay. The 3 nanosecond speed increase represents the only functional difference between these parts. Both devices are electrically erasable programmable logic devices with identical macrocell configuration and 5V operation.

Q: What is the significance of the speed specification difference?

A: Speed specification indicates maximum propagation delay through the logic device. The ATF16V8CZ-15PU operates at 15 ns maximum delay compared to 12 ns for the ATF16V8CZ-12PC. Applications with timing-critical paths must verify that system clock frequencies and setup/hold time requirements remain satisfied with the slower device.

Q: Are the physical packages identical?

A: Yes. Both parts use 20-DIP (0.300", 7.62mm) packaging with through-hole mounting. PCB footprints and socket compatibility are identical.

Q: What is the difference between the packaging designations (CZ-12PC versus CZ-15PU)?

A: The suffix indicates speed grade and packaging format. "12PC" denotes 12 nanosecond speed in plastic DIP packaging. "15PU" denotes 15 nanosecond speed in tube packaging. The speed grade is the primary technical differentiator.

Q: Why is RoHS compliance status different between these parts?

A: The ATF16V8CZ-12PC predates RoHS3 requirements and is classified as non-compliant. The ATF16V8CZ-15PU, as an active product, meets current ROHS3 compliance standards. This distinction is relevant for applications subject to environmental or regulatory compliance mandates.

Q: Are both parts from the same manufacturer?

A: Yes. Both ATF16V8CZ-12PC and ATF16V8CZ-15PU are manufactured by Microchip Technology and belong to the 16V8 programmable logic device series.