24LC08B-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC08B-E/ST is an 8Kbit I2C EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports a supply voltage range of 2.5V to 5.5V. The device is housed in an 8-TSSOP surface mount package and maintains active product status with verified programmability through DiGi-Electronics. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same memory category and interface protocol.

Substiute Parts

24LC08B-E/ST

Microchip TechnologyIn Stock: 84324LC08B-E/ST Datasheet

Current PartRFQ

CAV24C08YE-GT3

onsemiIn Stock: 7014CAV24C08YE-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24LC08B-E/ST are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Memory Specifications: Memory size (8Kbit), memory type (EEPROM), and interface protocol (I2C) must be identical. The memory organization may vary (256 x 8 x 4 versus 1K x 8) provided the total capacity remains 8Kbit.

Electrical Performance: Clock frequency (400 kHz), access time (900 ns), write cycle time (5ms), and supply voltage range (2.5V ~ 5.5V) must match or exceed the main part specifications.

Operating Conditions: Operating temperature range (-40°C ~ 125°C) must be maintained.

Package Compatibility: The 8-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width) is required for direct substitution.

Compliance Standards: RoHS3 compliance and REACH unaffected status must be maintained.

Parameter Comparison

Engineering Selection Recommendations

The CAV24C08YE-GT3 from onsemi is a direct electrical and mechanical substitute for the 24LC08B-E/ST. Both devices maintain identical memory capacity, interface protocol, electrical performance parameters, and operating temperature specifications. Both parts are ROHS3 compliant and REACH unaffected.

The primary distinction is that the CAV24C08YE-GT3 carries automotive grade qualification (AEC-Q100) and is supplied in Tape & Reel packaging, whereas the 24LC08B-E/ST is supplied in Tube packaging. The automotive qualification of the substitute part does not preclude its use in standard industrial or consumer applications. Selection between these parts should be based on packaging requirements, supply chain availability, and any specific qualification mandates of the application.

Frequently Asked Questions (FAQ)

Q: Can the CAV24C08YE-GT3 be used as a direct replacement for the 24LC08B-E/ST?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical memory capacity (8Kbit), interface protocol (I2C), clock frequency (400 kHz), access time (900 ns), supply voltage range (2.5V ~ 5.5V), and operating temperature range (-40°C ~ 125°C). The 8-TSSOP package dimensions are identical, enabling direct PCB substitution.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in a plastic tube for manual handling and smaller quantity orders. Tape & Reel packaging supplies components on a continuous reel for automated assembly processes. The electrical and mechanical specifications of the component remain unchanged; packaging format affects only handling and assembly methodology.

Q: Does the automotive qualification of the CAV24C08YE-GT3 affect its use in non-automotive applications?

A: No. Automotive qualification (AEC-Q100) indicates the part meets stringent automotive reliability and quality standards. This qualification does not restrict use in standard industrial or consumer applications; it only confirms the part meets or exceeds automotive-grade requirements.

Q: Are there any differences in memory organization between these parts?

A: The 24LC08B-E/ST specifies memory organization as 256 x 8 x 4, while the CAV24C08YE-GT3 specifies 1K x 8. Both configurations deliver 8Kbit total capacity. The different organization schemes do not affect functional compatibility or I2C interface operation.

Q: What compliance certifications apply to both parts?

A: Both the 24LC08B-E/ST and CAV24C08YE-GT3 are ROHS3 compliant and REACH unaffected. Both carry ECCN classification EAR99 and HTSUS code 8542.32.0051.