AT24CS64-XHM-T Equivalent & Substitute Parts

Part Overview

The AT24CS64-XHM-T is a 64Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 1 MHz with 550 ns access time. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this product category, ensuring functional interchangeability in circuit applications.

Substiute Parts

AT24CS64-XHM-T

Microchip TechnologyIn Stock: 2155AT24CS64-XHM-T Datasheet

Current PartRFQ

24AA64T-I/ST

Microchip TechnologyIn Stock: 427424AA64T-I/ST Datasheet

MFR RecommendedRFQ

24FC64F-I/ST

Microchip TechnologyIn Stock: 153724FC64F-I/ST Datasheet

MFR RecommendedRFQ

AT24C64D-XHM-T

Microchip TechnologyIn Stock: 18844AT24C64D-XHM-T Datasheet

Parametric EquivalentRFQ

BR24G64FVT-3AGE2

Rohm SemiconductorIn Stock: 7071BR24G64FVT-3AGE2 Datasheet

MFR RecommendedRFQ

BR24G64FVT-3GE2

Rohm SemiconductorIn Stock: 35456BR24G64FVT-3GE2 Datasheet

MFR RecommendedRFQ

BR24S64FVT-WE2

ROHM SemiconductorIn Stock: 3688BR24S64FVT-WE2 Datasheet

MFR RecommendedRFQ

CAT24C64YI-GT3

onsemiIn Stock: 15699CAT24C64YI-GT3 Datasheet

MFR RecommendedRFQ

M24C64-FDW6TP

STMicroelectronicsIn Stock: 25462M24C64-FDW6TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters: Memory Size (64Kbit), Memory Organization (8K x 8), Memory Interface (I2C), Package Type (8-TSSOP), Voltage Supply Range (1.7V ~ 5.5V minimum), Operating Temperature Range (-40°C ~ 85°C), Write Cycle Time (5ms), and RoHS3 compliance status. Clock frequency and access time variations are permitted within the substitute group when all other parameters remain equivalent. Substitute parts are grouped by manufacturer and clock frequency specification to facilitate selection based on application timing requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, confirming ongoing manufacturer support and environmental regulation adherence. Selection between substitute options depends on application-specific timing requirements. Parts operating at 1 MHz clock frequency (24FC64F-I/ST, AT24C64D-XHM-T, BR24G64FVT-3AGE2, CAT24C64YI-GT3, M24C64-FDW6TP) are suitable for applications requiring the same speed performance as the AT24CS64-XHM-T. Parts operating at 400 kHz clock frequency (24AA64T-I/ST, BR24G64FVT-3GE2, BR24S64FVT-WE2) are suitable for lower-speed applications where reduced clock frequency is acceptable. Package designation variations (8-TSSOP versus 8-TSSOP-B) must be confirmed compatible with PCB layout and assembly specifications.

Frequently Asked Questions (FAQ)

Q: Can 24AA64T-I/ST replace AT24CS64-XHM-T in all applications? A: 24AA64T-I/ST is electrically equivalent in memory capacity, organization, interface, voltage range, and temperature range. However, it operates at 400 kHz clock frequency versus 1 MHz for AT24CS64-XHM-T. Substitution is valid only if the application does not require 1 MHz operation speed.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages? A: Both package types are 8-pin thin shrink small outline packages with identical 0.173" width and 4.40mm dimensions. The -B designation indicates a variant from Rohm Semiconductor. PCB footprint compatibility must be confirmed with component datasheets and assembly documentation.

Q: Are Rohm Semiconductor BR24G64 and BR24S64 parts fully interchangeable? A: BR24G64FVT-3AGE2 and BR24S64FVT-WE2 both provide 64Kbit I2C EEPROM functionality in 8-TSSOP-B package. BR24G64FVT-3AGE2 operates at 1 MHz, while BR24S64FVT-WE2 operates at 400 kHz. Selection depends on required clock frequency for the application.

Q: What is the significance of access time differences among substitute parts? A: Access time (550 ns, 450 ns, 400 ns, 900 ns) represents the delay from address input to data output availability. Shorter access times indicate faster response. All listed parts meet the 5ms write cycle time specification. Application timing requirements determine whether faster access time is necessary.

Q: Can I use CAT24C64YI-GT3 from onsemi as a direct replacement? A: CAT24C64YI-GT3 is equivalent in all critical parameters: 64Kbit capacity, I2C interface, 1 MHz operation, 1.7V ~ 5.5V supply range, -40°C ~ 85°C temperature range, 8-TSSOP package, and ROHS3 compliance. It provides 400 ns access time, which is faster than the original 550 ns specification.

Q: What voltage range considerations apply when selecting substitutes? A: AT24CS64-XHM-T specifies 1.7V ~ 5.5V supply range. Most substitutes maintain this range. BR24G64FVT-3GE2 specifies 1.6V ~ 5.5V, which extends the lower voltage limit by 0.1V. Confirm supply voltage compatibility with circuit design specifications.