AT24CS08-XHM-T EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The AT24CS08-XHM-T is an 8Kbit EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates via I2C interface at 1 MHz clock frequency with 550 ns access time. The component is housed in an 8-TSSOP surface mount package and is currently in active production status with 3075 units in stock.

Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers while maintaining functional equivalence.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	550 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AT24CS08-XHM-T is determined by the following critical parameters:

Memory capacity: 8Kbit (1K x 8 organization)
Interface protocol: I2C
Package format: 8-TSSOP surface mount
Supply voltage range: 1.7V ~ 5.5V minimum compatibility
Operating temperature range: -40°C minimum and 85°C maximum minimum compatibility
Non-volatile EEPROM technology

All listed substitute parts meet these core requirements. Variations in clock frequency (1 MHz vs. 400 kHz), access time (550 ns vs. 450 ns vs. 900 ns), write cycle time (5ms vs. 4ms), and packaging format (Tape & Reel vs. Cut Tape) do not prevent functional substitution when the application design accommodates these differences.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Write Cycle Time	Voltage Supply	Operating Temp	Package	Packaging Format	Inventory
AT24CS08-XHM-T	Microchip Technology	8Kbit	1 MHz	550 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Tape & Reel	3075 Pcs
AT24C08C-XHM-T	Microchip Technology	8Kbit	1 MHz	550 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Cut Tape & Digi-Reel	15400 Pcs
CAT24C08YI-GT3	onsemi	8Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Cut Tape & Digi-Reel	15875 Pcs
M24C08-DRDW3TP/K	STMicroelectronics	8Kbit	1 MHz	450 ns	4ms	1.7V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Cut Tape & Digi-Reel	2360 Pcs
M24C08-FDW6TP	STMicroelectronics	8Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Cut Tape & Digi-Reel	4165 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain active product status and ROHS3 compliance. Selection among these alternatives depends on specific application requirements:

AT24C08C-XHM-T provides identical electrical and thermal specifications to the primary part while offering higher inventory availability (15400 units) and alternative packaging format options through Cut Tape and Digi-Reel distribution.

CAT24C08YI-GT3 operates at reduced clock frequency (400 kHz) and increased access time (900 ns) compared to the primary part. This part carries DiGi-Electronics Programmable verification status and maintains equivalent supply voltage and temperature range specifications.

M24C08-DRDW3TP/K offers improved access time performance (450 ns) and faster write cycle time (4ms) with extended operating temperature range to 125°C. This part includes AEC-Q100 automotive qualification and DiGi-Electronics Programmable verification.

M24C08-FDW6TP operates at 400 kHz clock frequency with 900 ns access time, matching the CAT24C08YI-GT3 electrical performance while sourced from STMicroelectronics.

Frequently Asked Questions (FAQ)

Q: Can AT24C08C-XHM-T directly replace AT24CS08-XHM-T in production?

A: Yes. Both parts share identical electrical specifications (1 MHz clock frequency, 550 ns access time, 5ms write cycle time, 1.7V ~ 5.5V supply range, -40°C ~ 85°C operating temperature) and 8-TSSOP package format. The primary difference is packaging format (Cut Tape & Digi-Reel vs. Tape & Reel) and higher inventory availability.

Q: What are the performance implications of using CAT24C08YI-GT3 or M24C08-FDW6TP?

A: Both parts operate at 400 kHz clock frequency and 900 ns access time, compared to the primary part's 1 MHz and 550 ns specifications. Applications must accommodate these reduced performance parameters. Write cycle time remains 5ms for both alternatives.

Q: Is M24C08-DRDW3TP/K suitable for automotive applications?

A: M24C08-DRDW3TP/K carries AEC-Q100 automotive qualification and extended operating temperature range (-40°C ~ 125°C). This part is suitable for automotive-grade applications requiring these certifications.

Q: Are all substitute parts available in 8-TSSOP package?

A: Yes. All listed substitute parts use the 8-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring mechanical and electrical compatibility with the primary part's PCB footprint.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel provides continuous reel format for automated assembly lines. Cut Tape & Digi-Reel offers flexible quantities and alternative distribution formats. Both formats contain identical components; packaging format selection depends on procurement and assembly process requirements.

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