PCA24S08ADP,118 EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The PCA24S08ADP,118 is an 8Kbit EEPROM memory integrated circuit manufactured by NXP USA Inc., designed for I2C serial communication applications. This device operates at 400 kHz clock frequency with a supply voltage range of 2.5V to 3.6V and is housed in an 8-TSSOP surface mount package. The product is currently classified as obsolete, necessitating identification of active equivalent components that maintain functional and electrical compatibility for ongoing system support and new design implementations.

Substiute Parts

PCA24S08ADP,118

NXP USA Inc.In Stock: 1221PCA24S08ADP,118 Datasheet

Current PartRFQ

BR24G08FVJ-3AGTE2

Rohm SemiconductorIn Stock: 946BR24G08FVJ-3AGTE2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCA24S08ADP,118 is determined by the following critical parameters:

• Memory Capacity & Organization: Substitute parts must provide 8Kbit capacity in 1K x 8 organization to maintain data storage equivalence.
• Memory Interface: I2C protocol compatibility is mandatory for system integration without firmware modification.
• Package Compatibility: 8-TSSOP surface mount package ensures mechanical and electrical pin compatibility with existing PCB layouts.
• Operating Temperature Range: Minimum -40°C to 85°C coverage required for environmental specification compliance.
• Supply Voltage: Substitute parts must operate within or encompass the 2.5V to 3.6V range of the original component.

The BR24G08FVJ-3AGTE2 manufactured by Rohm Semiconductor satisfies all substitution criteria. This active component maintains identical memory capacity, I2C interface, package form factor, and operating temperature specifications while providing enhanced clock frequency capability (1 MHz versus 400 kHz) and extended supply voltage range (1.6V to 5.5V), offering superior design flexibility.

Parameter Comparison

Engineering Selection Recommendations

The BR24G08FVJ-3AGTE2 is the qualified substitute for the obsolete PCA24S08ADP,118. Selection rationale is based on:

• Product Status: The substitute is active and currently manufactured, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements.
• Functional Equivalence: Identical memory capacity, organization, and I2C interface protocol ensure direct functional replacement without system redesign.
• Enhanced Specifications: The substitute provides superior performance characteristics including higher clock frequency (1 MHz) and wider supply voltage range (1.6V to 5.5V), offering improved design margin and operational flexibility.
• Package Compatibility: 8-TSSOP package form factor maintains PCB layout compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the BR24G08FVJ-3AGTE2 be used as a direct replacement for the PCA24S08ADP,118 in existing designs?

A: Yes. Both components share identical memory capacity (8Kbit), organization (1K x 8), I2C interface, package type (8-TSSOP), and operating temperature range (-40°C to 85°C). The substitute operates within the original supply voltage specification and requires no circuit modification.

Q: What is the significance of the higher clock frequency in the substitute part?

A: The BR24G08FVJ-3AGTE2 operates at 1 MHz compared to the original 400 kHz specification. This enhanced frequency capability provides faster data transfer rates and improved system performance while maintaining full backward compatibility with 400 kHz I2C bus implementations.

Q: Does the extended supply voltage range of the substitute affect compatibility?

A: No. The BR24G08FVJ-3AGTE2 supply range of 1.6V to 5.5V encompasses the original 2.5V to 3.6V specification. This wider range provides additional design flexibility for systems operating at different voltage levels without compromising compatibility with the original specification.

Q: Are there any package differences between the original and substitute parts?

A: Both components use 8-TSSOP surface mount packages with identical pin configuration and mechanical dimensions (0.118", 3.00mm width). The substitute designation "8-TSSOP-BJ" indicates the Rohm variant of the standard 8-TSSOP package, maintaining full PCB compatibility.

Q: What is the write cycle time for the substitute part?

A: The BR24G08FVJ-3AGTE2 specifies a 5ms write cycle time for word and page operations. This parameter was not provided for the original PCA24S08ADP,118 but is typical for 8Kbit I2C EEPROM devices in this class.