Equivalent & Substitute Parts for 24LC08BHT-E/OT

Part Overview

The 24LC08BHT-E/OT is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface communication at 400 kHz with 900 ns access time. The device is packaged in SOT-23-5 surface mount configuration and operates across a supply voltage range of 2.5V to 5.5V with an extended temperature range of -40°C to 125°C. This part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent memory capacity, interface protocol, and package specifications are maintained within the allowed electrical and mechanical parameters for this EEPROM category.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Format	EEPROM
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	SOT-23-5
Write Cycle Time	5ms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 24LC08BHT-E/OT is determined by the following critical parameters: 8Kbit memory capacity, EEPROM non-volatile memory format, I2C serial interface protocol, SOT-23-5 surface mount package, and compliance certifications. Substitute parts must maintain compatibility across these core specifications.

Two substitution categories are identified:

MFR Recommended Substitutes maintain full electrical and mechanical compatibility while offering enhanced performance characteristics. These parts support the same 8Kbit capacity and I2C interface but operate at higher clock frequencies (1 MHz versus 400 kHz) with improved access times (550 ns versus 900 ns). Supply voltage range is extended to 1.7V minimum, and operating temperature range is reduced to -40°C to 85°C.

Parametric Equivalent maintains identical electrical specifications including clock frequency, access time, voltage supply range, and operating temperature range, differing only in packaging format (Cut Tape versus Tape & Reel).

Parameter Comparison

Parameter	24LC08BHT-E/OT (Main)	AT24C08C-STUM-T	AT24CS08-STUM-T	24LC08BT-E/OT
Memory Size	8Kbit	8Kbit	8Kbit	8Kbit
Memory Organization	256 x 8 x 4	1K x 8	1K x 8	256 x 8 x 4
Memory Interface	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	1 MHz	1 MHz	400 kHz
Access Time	900 ns	550 ns	550 ns	900 ns
Write Cycle Time	5ms	5ms	5ms	5ms
Voltage Supply Range	2.5V ~ 5.5V	1.7V ~ 5.5V	1.7V ~ 5.5V	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Package Type	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original 24LC08BHT-E/OT specification.

The 24LC08BT-E/OT provides parametric equivalence with identical electrical performance characteristics, including 400 kHz clock frequency, 900 ns access time, 2.5V to 5.5V supply voltage range, and -40°C to 125°C operating temperature. This part differs only in packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and includes verified DiGi-Electronics programmability status.

The AT24C08C-STUM-T and AT24CS08-STUM-T offer enhanced performance through 1 MHz clock frequency operation and 550 ns access time while maintaining 8Kbit capacity and I2C interface compatibility. These parts extend the minimum supply voltage to 1.7V but operate within a reduced temperature range of -40°C to 85°C. The AT24CS08-STUM-T is supplied in Tape & Reel packaging with higher inventory availability (15,100 units), while the AT24C08C-STUM-T is available in Cut Tape & Digi-Reel format (1,210 units).

Selection between these substitutes depends on application requirements for operating temperature range, clock frequency performance, and supply voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can AT24C08C-STUM-T or AT24CS08-STUM-T be used as direct replacements for 24LC08BHT-E/OT?

A: These parts are functionally compatible for applications requiring 8Kbit I2C EEPROM memory in SOT-23-5 packaging. However, the reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C) and extended minimum supply voltage (1.7V versus 2.5V) must be evaluated against application requirements. The higher clock frequency (1 MHz) and faster access time (550 ns) represent performance enhancements.

Q: What is the difference between 24LC08BT-E/OT and 24LC08BHT-E/OT?

A: Both parts are parametrically equivalent with identical electrical specifications. The primary difference is packaging format: 24LC08BT-E/OT is supplied in Cut Tape & Digi-Reel format, while 24LC08BHT-E/OT is supplied in Tape & Reel format. The 24LC08BT-E/OT includes verified DiGi-Electronics programmability status.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all identified substitute parts (24LC08BT-E/OT, AT24C08C-STUM-T, and AT24CS08-STUM-T) maintain ROHS3 compliance status consistent with the original 24LC08BHT-E/OT specification.

Q: What memory organization differences exist between substitute parts?

A: The 24LC08BHT-E/OT and 24LC08BT-E/OT use 256 x 8 x 4 memory organization, while AT24C08C-STUM-T and AT24CS08-STUM-T use 1K x 8 organization. Both configurations deliver 8Kbit total capacity and are compatible with I2C interface protocols.

Q: How do clock frequency differences affect application compatibility?

A: The 24LC08BHT-E/OT operates at 400 kHz I2C clock frequency, while AT24C08C-STUM-T and AT24CS08-STUM-T support 1 MHz operation. Higher clock frequency enables faster data transfer rates. Applications designed for 400 kHz operation remain compatible with 1 MHz parts, as the higher frequency represents a performance enhancement rather than a limitation.

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