IS25LQ080-JNLE Equivalent & Substitute Parts

Part Overview

The IS25LQ080-JNLE is an 8Mbit NOR Flash memory IC manufactured by ISSI (Integrated Silicon Solution Inc) in an 8-SOIC surface mount package. This device provides SPI and Quad I/O interface capabilities with a maximum clock frequency of 104 MHz, operating across a supply voltage range of 2.3V to 3.6V and temperature range of -40°C to 105°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile FLASH
Memory Size	8Mbit
Memory Organization	1M x 8
Memory Interface	SPI - Quad I/O
Clock Frequency	104 MHz
Write Cycle Time	1ms
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 105°C
Package Type	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the IS25LQ080-JNLE is determined by strict equivalence across the following critical parameters:

Memory Capacity: 8Mbit capacity with 1M x 8 organization must be maintained
Package Compatibility: Identical 8-SOIC package footprint (0.154", 3.90mm Width) for direct PCB compatibility
Interface Protocol: SPI with Quad I/O support for signal-level compatibility
Supply Voltage: 2.3V ~ 3.6V operating range for power distribution compatibility
Temperature Range: -40°C ~ 105°C operating specification for thermal environment compatibility
Compliance Standards: ROHS3 compliance and MSL 3 rating for manufacturing and environmental requirements

The IS25LP080D-JNLE meets all substitution criteria. While this part offers enhanced specifications (133 MHz clock frequency, 800µs write cycle time, and additional QPI/DTR interface modes), these represent functional improvements that do not compromise backward compatibility with designs specified for the IS25LQ080-JNLE.

Parameter Comparison

Parameter	IS25LQ080-JNLE	IS25LP080D-JNLE	Compatibility
Memory Size	8Mbit	8Mbit	Equivalent
Memory Organization	1M x 8	1M x 8	Equivalent
Memory Interface	SPI - Quad I/O	SPI - Quad I/O, QPI, DTR	Compatible (superset)
Clock Frequency	104 MHz	133 MHz	Compatible (higher)
Write Cycle Time	1ms	800µs	Compatible (faster)
Voltage Supply Range	2.3V ~ 3.6V	2.3V ~ 3.6V	Equivalent
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Equivalent
Package Type	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)	Equivalent
Product Status	Discontinued	Active	Substitute available

Engineering Selection Recommendations

The IS25LP080D-JNLE is the direct substitute for the discontinued IS25LQ080-JNLE. Selection is based on the following engineering factors:

Product Availability: The IS25LP080D-JNLE maintains active production status with confirmed inventory (1620 Pcs), whereas the IS25LQ080-JNLE is discontinued
Regulatory Compliance: Both parts maintain ROHS3 compliance and identical MSL 3 ratings, ensuring manufacturing process compatibility
Functional Compatibility: The IS25LP080D-JNLE provides identical core memory specifications (8Mbit, 1M x 8 organization) with identical package footprint and electrical interface
Enhanced Performance: The substitute part offers improved specifications (133 MHz vs 104 MHz clock frequency, 800µs vs 1ms write cycle time) that provide performance headroom without requiring design modification

Frequently Asked Questions (FAQ)

Q: Can the IS25LP080D-JNLE be used as a direct replacement for the IS25LQ080-JNLE without PCB modifications?

A: Yes. Both parts use identical 8-SOIC package footprints (0.154", 3.90mm Width) and maintain the same pinout. No PCB layout changes are required.

Q: Are the supply voltage requirements identical between these parts?

A: Yes. Both parts operate across the 2.3V to 3.6V supply voltage range and are compatible with identical power distribution designs.

Q: Does the IS25LP080D-JNLE support the same SPI Quad I/O interface as the original part?

A: Yes. The IS25LP080D-JNLE supports SPI Quad I/O operation identical to the IS25LQ080-JNLE. The substitute additionally supports QPI and DTR modes, which are optional enhancements that do not affect standard SPI Quad I/O operation.

Q: What is the impact of the faster clock frequency (133 MHz vs 104 MHz) on system design?

A: The higher clock frequency of the IS25LP080D-JNLE is backward compatible. Systems designed for 104 MHz operation will function correctly at this higher frequency without modification. The faster specification provides performance margin for future design iterations.

Q: Are the write cycle times compatible between these parts?

A: Yes. The IS25LP080D-JNLE write cycle time of 800µs is faster than the original 1ms specification. Systems designed for 1ms write cycles will operate correctly with the faster substitute without timing violations.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant with identical MSL 3 (168 Hours) moisture sensitivity ratings. Manufacturing and storage requirements are equivalent.

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