ATF1500AL-20JC Equivalent & Substitute Parts

Part Overview

The ATF1500AL-20JC is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 32 macrocells and 32 I/O pins with a maximum propagation delay of 20 nanoseconds. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The ATF1500AL-20JC operates within a supply voltage range of 4.75V to 5.25V and is housed in a 44-pin PLCC package suitable for surface mount applications. Due to its obsolete status, locating compatible substitute components is necessary for design continuity and production support.

Substiute Parts

ATF1500AL-20JC

Microchip TechnologyIn Stock: 919ATF1500AL-20JC Datasheet

Current PartRFQ

ATF1500AL-20JU

Microchip TechnologyIn Stock: 2262ATF1500AL-20JU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1500AL-20JC is determined by the following critical parameters that must remain consistent:

• Macrocell Count: 32 macrocells (functional logic capacity)
• I/O Pin Count: 32 I/O pins (interface capability)
• Propagation Delay: 20 ns maximum (timing performance)
• Package Type: 44-LCC (J-Lead) in 44-PLCC form factor (physical compatibility)
• Programmable Architecture: In System Programmable capability (programming methodology)
• Series Family: ATF15xx (design compatibility)

The ATF1500AL-20JU qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. Variations in voltage supply range, operating temperature range, product status, and compliance certifications do not preclude substitution when the core functional parameters align.

Parameter Comparison

Engineering Selection Recommendations

The ATF1500AL-20JU is a direct functional equivalent to the ATF1500AL-20JC. Both devices share identical macrocell count, I/O configuration, propagation delay specification, and package form factor.

The ATF1500AL-20JU offers the following advantages:

• Active product status, ensuring continued availability and manufacturing support
• Extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), providing broader environmental compatibility
• Wider voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V), accommodating greater power supply variation
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Verified programmable capability through DiGi-Electronics

Selection of the ATF1500AL-20JU is appropriate for applications requiring the functional and electrical characteristics of the ATF1500AL-20JC with the benefit of active product status and enhanced compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the ATF1500AL-20JU directly replace the ATF1500AL-20JC in existing designs?

A: Yes. Both devices feature identical macrocell count (32), I/O pin count (32), maximum propagation delay (20 ns), and 44-LCC package configuration. The electrical and mechanical interfaces are compatible.

Q: What is the significance of the different voltage supply ranges?

A: The ATF1500AL-20JU operates across 4.5V to 5.5V, while the ATF1500AL-20JC operates across 4.75V to 5.25V. The wider range of the ATF1500AL-20JU provides greater tolerance to power supply variations and is a superset of the original specification.

Q: Why does the ATF1500AL-20JU have a different operating temperature range?

A: The ATF1500AL-20JU supports -40°C to 85°C, compared to the ATF1500AL-20JC at 0°C to 70°C. This extended range reflects the active product status and current manufacturing specifications. Applications operating within the original 0°C to 70°C range remain fully compatible.

Q: What is the difference between the packaging designations JC and JU?

A: Both designations refer to 44-pin PLCC packages with J-lead configuration. The suffix variation indicates different product status and compliance certifications rather than physical package differences.

Q: Is the ATF1500AL-20JU RoHS compliant?

A: Yes, the ATF1500AL-20JU is ROHS3 compliant. The original ATF1500AL-20JC is RoHS non-compliant. This distinction is relevant for applications subject to environmental and regulatory requirements.

Q: What does "In System Programmable" mean for these devices?

A: Both devices support in-system programming, allowing firmware updates and configuration changes without removing the component from the circuit. Both support a minimum of 100 program/erase cycles.