IS25LD020-JDLE-TR Equivalent & Substitute Parts

Part Overview

The IS25LD020-JDLE-TR is a 2Mbit SPI FLASH memory IC manufactured by ISSI (Integrated Silicon Solution Inc) in an 8-TSSOP surface mount package. This device operates at 100 MHz clock frequency with a supply voltage range of 2.3V to 3.6V and supports a 5ms page write cycle time. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

IS25LD020-JDLE-TR

ISSI, Integrated Silicon Solution IncIn Stock: 836IS25LD020-JDLE-TR Datasheet

Current PartRFQ

AT25DF021A-XMHNHR-T

Renesas Electronics CorporationIn Stock: 1475AT25DF021A-XMHNHR-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IS25LD020-JDLE-TR is determined by the following critical parameters:

• Memory Capacity & Organization: 2Mbit capacity with 256K x 8 organization is mandatory for direct functional replacement
• Interface Protocol: SPI interface is required for circuit compatibility
• Package Compatibility: 8-TSSOP surface mount package with identical 0.173" (4.40mm) width ensures PCB footprint compatibility
• Voltage Compatibility: Supply voltage range must encompass or overlap with the original 2.3V ~ 3.6V specification
• Regulatory Compliance: RoHS3 and REACH compliance status must be maintained

The AT25DF021A-XMHNHR-T manufactured by Renesas Electronics Corporation meets all substitution criteria. This part maintains identical memory capacity, organization, SPI interface, and 8-TSSOP package configuration while offering extended operating temperature range and active product status.

Parameter Comparison

Engineering Selection Recommendations

The AT25DF021A-XMHNHR-T is a direct functional substitute for the IS25LD020-JDLE-TR based on the following engineering criteria:

• Identical Memory Specifications: Both devices provide 2Mbit capacity in 256K x 8 organization with SPI interface and matching page write cycle time of 5ms
• Package Compatibility: Both use 8-TSSOP surface mount packaging with identical physical dimensions, ensuring PCB footprint compatibility without layout modifications
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements
• Active Product Status: The substitute part is in active production status, ensuring long-term availability and supply chain stability compared to the obsolete original part
• Extended Operating Range: The substitute offers lower minimum supply voltage (1.7V vs 2.3V) and higher maximum operating temperature (125°C vs 105°C), providing broader application flexibility
• Clock Frequency Consideration: The substitute operates at 85 MHz versus the original 100 MHz. This parameter difference is acceptable for applications where the original 100 MHz specification was not a critical design requirement

Frequently Asked Questions (FAQ)

Q: Can the AT25DF021A-XMHNHR-T directly replace the IS25LD020-JDLE-TR without PCB modifications?

A: Yes. Both devices use identical 8-TSSOP packaging with matching physical dimensions (0.173" width, 4.40mm). Pin configuration and SPI interface are compatible, allowing direct substitution without PCB layout changes.

Q: What is the significance of the 100 MHz versus 85 MHz clock frequency difference?

A: The original part specifies 100 MHz maximum clock frequency, while the substitute operates at 85 MHz. This difference is acceptable if your application does not require the full 100 MHz speed. Verify your system's actual clock frequency requirements before substitution.

Q: Are there any voltage supply compatibility issues?

A: No. The substitute part accepts a wider supply voltage range (1.7V ~ 3.6V) compared to the original (2.3V ~ 3.6V). Any circuit designed for the original part will operate correctly with the substitute.

Q: Does the extended operating temperature range of the substitute affect compatibility?

A: No. The substitute's extended temperature range (-40°C ~ 125°C) is a superset of the original specification (-40°C ~ 105°C). This provides additional operational margin without affecting compatibility.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the IS25LD020-JDLE-TR and AT25DF021A-XMHNHR-T are ROHS3 compliant with identical Moisture Sensitivity Level (MSL) rating of 3 (168 Hours).

Q: Why is the original part listed as obsolete?

A: The IS25LD020-JDLE-TR is classified as obsolete, meaning ISSI has discontinued production. The AT25DF021A-XMHNHR-T is an active product from Renesas Electronics Corporation, ensuring continued availability and supply chain support.