24FC16HT-I/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24FC16HT-I/SN is a 16Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, designed for non-volatile data storage applications requiring I2C serial interface communication. This device operates at 1 MHz clock frequency with 450 ns access time, supporting supply voltages from 1.7V to 5.5V across industrial temperature ranges. The component is actively produced and ROHS3 compliant, making it suitable for modern embedded systems, IoT devices, and industrial control applications where persistent memory storage is required. Equivalent and substitute parts are identified when all critical electrical parameters, memory specifications, interface protocols, and physical packaging remain identical across different manufacturing batches or variant designations.

Key Parameters

Parameter	Specification
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	450 ns
Write Cycle Time	5ms
Supply Voltage Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

The 24FC16HT-I/SN and 24FC16T-I/SN are functionally equivalent EEPROM memory devices. Substitution eligibility is determined by strict equivalence across the following critical parameters: memory capacity (16Kbit), memory organization (2K x 8 bit), serial interface protocol (I2C), clock frequency (1 MHz), access time (450 ns), write cycle time (5ms), supply voltage range (1.7V to 5.5V), operating temperature range (-40°C to 85°C), physical package (8-SOIC with 3.90mm width), and compliance certifications (ROHS3, REACH Unaffected). Both parts share identical base product number 24FC16 and are manufactured by Microchip Technology. The primary distinction between these variants relates to manufacturing batch designation and programmable verification status, not functional or electrical characteristics.

Parameter Comparison

Parameter	24FC16HT-I/SN (Main)	24FC16T-I/SN (Substitute)	Match Status
Manufacturer	Microchip Technology	Microchip Technology	Identical
Memory Size	16Kbit	16Kbit	Identical
Memory Organization	2K x 8	2K x 8	Identical
Memory Interface	I2C	I2C	Identical
Clock Frequency	1 MHz	1 MHz	Identical
Access Time	450 ns	450 ns	Identical
Write Cycle Time	5ms	5ms	Identical
Supply Voltage	1.7V ~ 5.5V	1.7V ~ 5.5V	Identical
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Identical
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Active	Active	Identical

Engineering Selection Recommendations

Both the 24FC16HT-I/SN and 24FC16T-I/SN are active production components from Microchip Technology with full ROHS3 compliance and REACH unaffected status, qualifying them for use in regulated industrial and consumer applications. Selection between these parts is based on availability and supply chain requirements rather than functional differentiation. The 24FC16T-I/SN carries verified programmable status through DiGi-Electronics, while the 24FC16HT-I/SN status remains unverified through this channel. Both devices meet identical electrical specifications, thermal operating ranges, and physical packaging requirements for direct substitution in circuit designs. Current inventory levels show 4018 units of 24FC16T-I/SN and 3520 units of 24FC16HT-I/SN available in tape and reel packaging.

Frequently Asked Questions (FAQ)

Q: Can 24FC16T-I/SN replace 24FC16HT-I/SN in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including memory capacity, interface protocol, timing characteristics, voltage range, temperature range, and physical package dimensions. Direct substitution is supported without circuit modification.

Q: What determines compatibility between these EEPROM variants?

A: Compatibility is established through equivalence in memory size (16Kbit), organization (2K x 8), I2C interface, 1 MHz clock frequency, 450 ns access time, 5ms write cycle time, 1.7V to 5.5V supply voltage range, -40°C to 85°C operating temperature, and 8-SOIC surface mount package. All parameters match between the two parts.

Q: Are there differences in package handling or storage requirements?

A: Both parts share identical MSL rating of 3 (168 hours), requiring equivalent moisture control and storage conditions. No differentiation exists in handling, storage, or reflow soldering requirements.

Q: What is the significance of the programmable verification status difference?

A: The 24FC16T-I/SN carries DiGi-Electronics verified programmable status while 24FC16HT-I/SN remains unverified through this channel. This distinction does not affect electrical performance or functional capability; it reflects verification testing through a specific supplier channel.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both devices operate across the full industrial temperature range of -40°C to 85°C and maintain identical electrical specifications throughout this range.

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