ATF1502AS-15JI Equivalent & Substitute Parts

Part Overview

The ATF1502AS-15JI is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 32 macrocells and 32 I/O pins in a 44-pin PLCC package. This device is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and component procurement.

The ATF1502AS-15JI operates within the 4.5V to 5.5V supply range with a maximum propagation delay of 15 nanoseconds and supports in-system programming with a minimum of 10,000 program/erase cycles. The device is not RoHS compliant and carries an MSL rating of 2 (1 Year).

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Series	ATF15xx
Number of Macrocells	32
Number of I/O	32
Package / Case	44-LCC (J-Lead)
Supplier Device Package	44-PLCC (16.6x16.6)
Voltage Supply - Internal	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Delay Time tpd(1) Max	15 ns
Mounting Type	Surface Mount
Programmable Type	In System Programmable (min 10K program/erase cycles)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1502AS-15JI is determined by the following critical parameters:

Macrocell and I/O Count: Both the main part and substitute must provide 32 macrocells and 32 I/O pins to maintain functional equivalence
Package Type: Both devices must use the 44-LCC (J-Lead) package with identical physical dimensions (16.6x16.6 mm) to ensure PCB compatibility
Voltage Supply Range: Both must operate within 4.5V to 5.5V to maintain system compatibility
Operating Temperature Range: Both must support -40°C to 85°C operation
Programmable Type: Both must support in-system programming with minimum 10K program/erase cycles
Propagation Delay: The substitute's maximum delay time must not exceed the original specification to preserve timing performance

The ATF1502AS-10JU44 meets all substitution criteria while offering improved performance characteristics and active product status.

Parameter Comparison

Parameter	ATF1502AS-15JI (Main Part)	ATF1502AS-10JU44 (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Series	ATF15xx	ATF15xx
Number of Macrocells	32	32
Number of I/O	32	32
Package / Case	44-LCC (J-Lead)	44-LCC (J-Lead)
Supplier Device Package	44-PLCC (16.6x16.6)	44-PLCC (16.6x16.6)
Voltage Supply - Internal	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Delay Time tpd(1) Max	15 ns	10 ns
Mounting Type	Surface Mount	Surface Mount
Programmable Type	In System Programmable (min 10K program/erase cycles)	In System Programmable (min 10K program/erase cycles)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
MSL Rating	2 (1 Year)	3 (168 Hours)

Engineering Selection Recommendations

The ATF1502AS-10JU44 is the direct substitute for the ATF1502AS-15JI. This substitution is supported by:

Identical Core Specifications: Both devices share the same macrocell count, I/O configuration, package dimensions, voltage supply range, and operating temperature range
Active Product Status: The ATF1502AS-10JU44 is classified as active, ensuring continued availability and manufacturing support, whereas the main part is obsolete
Improved Compliance: The substitute achieves ROHS3 compliance, addressing regulatory requirements that the original part does not meet
Enhanced Performance: The substitute provides a maximum propagation delay of 10 nanoseconds, improving upon the original 15-nanosecond specification while maintaining full backward compatibility
Verified Programmability: The substitute has been verified as programmable through DiGi-Electronics, confirming in-system programming capability

The ATF1502AS-10JU44 is suitable for direct replacement in applications currently using the ATF1502AS-15JI, with the added benefit of improved timing performance and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502AS-10JU44 be used as a direct replacement for the ATF1502AS-15JI?

A: Yes. Both devices share identical macrocell count (32), I/O pin count (32), package type (44-LCC), voltage supply range (4.5V–5.5V), and operating temperature range (-40°C to 85°C). The substitute offers improved propagation delay (10 ns vs. 15 ns) and active product status.

Q: Are there any timing compatibility concerns when substituting the ATF1502AS-10JU44?

A: No. The substitute's maximum propagation delay of 10 nanoseconds is faster than the original specification of 15 nanoseconds, ensuring that timing-critical applications will continue to function correctly.

Q: What is the difference in packaging between these two parts?

A: Both parts use identical 44-pin PLCC packaging with J-lead configuration and matching physical dimensions (16.6x16.6 mm). No PCB layout modifications are required.

Q: Does the ATF1502AS-10JU44 support the same programming methodology?

A: Yes. Both devices support in-system programming with a minimum of 10,000 program/erase cycles. The substitute has been verified as programmable.

Q: What are the compliance differences between the two parts?

A: The ATF1502AS-15JI is not RoHS compliant, while the ATF1502AS-10JU44 is ROHS3 compliant. For applications subject to RoHS regulations, the substitute is the appropriate choice.

Q: Are there any moisture sensitivity considerations?

A: The ATF1502AS-15JI carries an MSL rating of 2 (1 Year), while the substitute has an MSL rating of 3 (168 Hours). Both ratings indicate standard moisture handling requirements for surface-mount components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message