IS25LQ032B-JNLE Equivalent & Substitute Parts

Part Overview

The IS25LQ032B-JNLE is a 32Mbit NOR Flash memory IC manufactured by ISSI (Integrated Silicon Solution Inc) with SPI Quad I/O interface capability. This component is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The part operates across a wide temperature range (-40°C to 105°C) and is housed in an 8-SOIC package suitable for surface mount applications.

Substiute Parts

IS25LQ032B-JNLE

ISSI, Integrated Silicon Solution IncIn Stock: 1557IS25LQ032B-JNLE Datasheet

Current PartRFQ

IS25LP032D-JNLE

ISSI, Integrated Silicon Solution IncIn Stock: 1396IS25LP032D-JNLE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IS25LQ032B-JNLE is determined by the following critical parameters:

• Memory capacity: 32Mbit (4M x 8 organization)
• Memory interface: SPI with Quad I/O capability
• Supply voltage range: 2.3V ~ 3.6V
• Operating temperature range: -40°C ~ 105°C
• Package form factor: 8-SOIC with 0.154" width (3.90mm)
• RoHS3 compliance and MSL rating consistency

The IS25LP032D-JNLE meets all substitution criteria. While this part operates at a higher clock frequency (133 MHz versus 104 MHz) and features faster write cycle time (800µs versus 1ms), these represent performance enhancements rather than incompatibilities. The part maintains identical memory capacity, organization, supply voltage range, operating temperature range, package dimensions, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The IS25LP032D-JNLE is the direct active equivalent for the obsolete IS25LQ032B-JNLE. Selection of this substitute is supported by:

• Active product status, ensuring long-term availability and supply chain continuity
• Identical memory capacity and organization (32Mbit, 4M x 8)
• Matching supply voltage range (2.3V ~ 3.6V) and operating temperature specifications (-40°C ~ 105°C)
• Equivalent package footprint and dimensions (8-SOIC/8-SOP, 0.154" width)
• Maintained RoHS3 compliance and MSL rating
• Enhanced performance characteristics (133 MHz clock frequency, 800µs write cycle time) that provide operational margin without introducing incompatibility

Frequently Asked Questions (FAQ)

Q: Can IS25LP032D-JNLE directly replace IS25LQ032B-JNLE in existing designs?

A: Yes. Both parts share identical memory capacity (32Mbit), organization (4M x 8), supply voltage range (2.3V ~ 3.6V), operating temperature range (-40°C ~ 105°C), and package footprint (8-SOIC/8-SOP, 0.154" width). The substitute features higher clock frequency and faster write cycle time, which are performance enhancements.

Q: What is the difference between 8-SOIC and 8-SOP packaging?

A: Both designations refer to 8-pin small outline packages with identical external dimensions (0.154" width, 3.90mm). These packages are mechanically and electrically interchangeable for PCB assembly purposes.

Q: Does the higher clock frequency (133 MHz vs 104 MHz) affect compatibility?

A: No. Higher clock frequency represents improved performance. Designs operating at the original 104 MHz specification will function correctly with the substitute part operating at 133 MHz.

Q: Are there any compliance or certification differences?

A: Both parts maintain identical RoHS3 compliance status and MSL rating (3, 168 Hours). No additional qualification is required from a regulatory standpoint.

Q: Why is the original part marked as obsolete?

A: The IS25LQ032B-JNLE has been superseded by the IS25LP032D-JNLE in the manufacturer's product line. The substitute represents the current active equivalent with enhanced specifications.