IS25LQ010B-JDLE Equivalent & Substitute Parts

Part Overview

The IS25LQ010B-JDLE is a 1Mbit NOR Flash memory IC manufactured by ISSI (Integrated Silicon Solution Inc) in an 8-TSSOP surface mount package. This device provides SPI and Quad I/O interface capability with a 104 MHz clock frequency, designed for embedded storage applications requiring non-volatile memory. The part is currently listed as obsolete, making identification of compatible substitute components essential for ongoing production support, design revisions, and inventory management.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile FLASH
Memory Format	FLASH - NOR
Memory Size	1Mbit
Memory Organization	128K x 8
Memory Interface	SPI - Quad I/O
Clock Frequency	104 MHz
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 105°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Write Cycle Time	800µs
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the IS25LQ010B-JDLE is determined by strict alignment of the following critical parameters:

Memory Capacity: 1Mbit (128K x 8 organization)
Memory Technology: FLASH - NOR
Interface Protocol: SPI with Quad I/O capability
Clock Frequency: 104 MHz minimum
Supply Voltage Range: 2.3V ~ 3.6V compatibility
Package Format: 8-TSSOP surface mount with identical pinout
Compliance Standards: ROHS3 compliance required

The AT25DN011-XMHF-T from Renesas Electronics Corporation meets these substitution criteria. While this part operates at a reduced maximum temperature range (-40°C ~ 85°C versus -40°C ~ 105°C), it maintains full electrical and mechanical compatibility across all other specified parameters, including identical memory capacity, interface type, clock frequency, supply voltage range, and package configuration.

Parameter Comparison

Parameter	IS25LQ010B-JDLE (Main Part)	AT25DN011-XMHF-T (Substitute)
Manufacturer	ISSI	Renesas Electronics Corporation
Memory Size	1Mbit	1Mbit
Memory Organization	128K x 8	128K x 8
Memory Interface	SPI - Quad I/O	SPI
Clock Frequency	104 MHz	104 MHz
Voltage Supply	2.3V ~ 3.6V	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 105°C	-40°C ~ 85°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP (0.173", 4.40mm Width)
Write Cycle Time	800µs	8µs (word), 1.75ms (page)
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

The AT25DN011-XMHF-T is the qualified substitute for the obsolete IS25LQ010B-JDLE based on the following engineering criteria:

Electrical Compatibility: Both devices operate within the identical 2.3V ~ 3.6V supply voltage range and maintain 104 MHz clock frequency specification, ensuring direct functional replacement in existing circuit designs.

Package Compatibility: Both components utilize the 8-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm width), allowing direct PCB footprint compatibility without layout modifications.

Compliance Alignment: Both parts maintain ROHS3 compliance and EAR99 export classification, satisfying regulatory requirements for equivalent component substitution.

Product Status Advantage: The AT25DN011-XMHF-T carries active product status with established supply chain availability (1125 pcs in stock), compared to the obsolete status of the original part.

Temperature Range Consideration: The substitute part operates across -40°C ~ 85°C, which is narrower than the original -40°C ~ 105°C range. Applications requiring operation above 85°C require thermal analysis to confirm suitability.

Performance Enhancement: The AT25DN011-XMHF-T demonstrates improved write cycle performance (8µs word, 1.75ms page versus 800µs) and superior moisture handling (MSL 1 versus MSL 3), providing operational advantages in production environments.

Frequently Asked Questions (FAQ)

Q: Can the AT25DN011-XMHF-T directly replace the IS25LQ010B-JDLE without PCB modifications?

A: Yes. Both devices share identical 8-TSSOP package dimensions and pinout configuration, enabling direct PCB footprint compatibility. No layout changes are required.

Q: What is the primary difference between these two parts?

A: The maximum operating temperature differs: IS25LQ010B-JDLE operates to 105°C while AT25DN011-XMHF-T operates to 85°C. All other electrical parameters, memory capacity, interface type, and package format are equivalent.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the IS25LQ010B-JDLE and AT25DN011-XMHF-T maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and export regulations.

Q: Does the interface difference (SPI - Quad I/O versus SPI) affect compatibility?

A: The AT25DN011-XMHF-T supports standard SPI interface. Applications utilizing Quad I/O mode specifically require verification of firmware or driver compatibility, as the substitute operates in SPI mode.

Q: What is the significance of the Moisture Sensitivity Level difference?

A: The AT25DN011-XMHF-T carries MSL 1 (unlimited moisture exposure tolerance) compared to MSL 3 (168 hours) for the original part. This provides superior handling flexibility in manufacturing and storage environments.

Q: Is the improved write cycle time of the substitute part a concern?

A: No. Faster write cycle times (8µs word, 1.75ms page) represent performance improvement and do not create compatibility issues. Existing firmware and drivers operate without modification.

Q: What inventory considerations apply to this substitution?

A: The AT25DN011-XMHF-T is currently in active production with 1125 pcs available in stock, compared to the obsolete status of the original part. This ensures long-term supply chain continuity.

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