24LC16B/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC16B/ST is a 16Kbit I2C EEPROM memory IC manufactured by Microchip Technology in 8-TSSOP surface mount packaging. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V across an operating temperature range of 0°C to 70°C. The device is ROHS3 compliant and currently in active production status with 761 units in stock. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical specifications to ensure functional interchangeability in target applications.

Key Parameters

Parameter	24LC16B/ST Value
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24LC16B/ST are selected based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

Memory capacity: 16Kbit (2K x 8 organization)
Interface protocol: I2C
Package type: 8-TSSOP with 0.173" width and 4.40mm dimensions
Mounting type: Surface Mount
Clock frequency: 400 kHz or higher
Access time: 900 ns or faster
Write cycle time: 5ms or faster

Secondary Compatibility Factors:

Supply voltage range must encompass or exceed 2.5V ~ 5.5V
Operating temperature range must support minimum 0°C ~ 70°C
RoHS3 compliance status
Product status: Active

Substitute parts are grouped into two categories: direct equivalents from Microchip Technology with identical specifications, and cross-manufacturer alternatives from Rohm Semiconductor, onsemi, STMicroelectronics, and Renesas Electronics Corporation that meet or exceed the electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Memory Size	I2C Clock	Access Time	Voltage Supply	Temp Range	Package	Packaging Type
24LC16B/ST	Microchip Technology	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-TSSOP	Tube
24AA16H-I/ST	Microchip Technology	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Tube
24LC16B-I/ST	Microchip Technology	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Tube
BR24G16FVT-3GE2	Rohm Semiconductor	16Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Tape & Reel
BR24T16FVT-WE2	Rohm Semiconductor	16Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Tape & Reel
CAV24C16YE-GT3	onsemi	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Tape & Reel
M24C16-DRDW8TP/K	STMicroelectronics	16Kbit	1 MHz	450 ns	1.7V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	Cut Tape & Digi-Reel
M24C16-FDW6TP	STMicroelectronics	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Cut Tape & Digi-Reel
M24C16-RDW6TP	STMicroelectronics	16Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Cut Tape & Digi-Reel
R1EX24016ATAS0I#S0	Renesas Electronics	16Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Tape & Reel

Engineering Selection Recommendations

Microchip Technology Direct Equivalents: The 24LC16B-I/ST and 24AA16H-I/ST from Microchip Technology are direct functional equivalents. The 24LC16B-I/ST maintains identical supply voltage specifications (2.5V ~ 5.5V) with extended temperature range (-40°C ~ 85°C). The 24AA16H-I/ST offers lower minimum supply voltage (1.7V) and extended temperature range, suitable for applications requiring wider operating conditions. Both are ROHS3 compliant and in active production.

Cross-Manufacturer Alternatives: STMicroelectronics M24C16 series devices (M24C16-FDW6TP, M24C16-RDW6TP) provide 400 kHz I2C operation with 900 ns access time and extended temperature ranges. The M24C16-DRDW8TP/K variant operates at 1 MHz with 450 ns access time and includes AEC-Q100 automotive qualification, suitable for high-speed applications.

Rohm Semiconductor BR24G16FVT-3GE2 and BR24T16FVT-WE2 devices support 400 kHz I2C operation with lower minimum supply voltage (1.6V) and extended temperature range (-40°C ~ 85°C).

onsemi CAV24C16YE-GT3 includes AEC-Q100 automotive qualification with extended temperature range (-40°C ~ 125°C) and maintains 2.5V ~ 5.5V supply voltage compatibility.

Renesas Electronics R1EX24016ATAS0I#S0 provides 400 kHz I2C operation with 900 ns access time and 1.8V minimum supply voltage.

All substitute parts maintain ROHS3 compliance and 8-TSSOP package compatibility. Selection should prioritize supply voltage range requirements, temperature operating range, and packaging format (Tube, Tape & Reel, or Cut Tape) based on procurement and assembly specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24LC16B/ST with 24AA16H-I/ST? A: Yes. Both devices are Microchip Technology 16Kbit I2C EEPROMs in 8-TSSOP packaging with 400 kHz clock frequency and 900 ns access time. The 24AA16H-I/ST has lower minimum supply voltage (1.7V vs 2.5V) and extended temperature range (-40°C ~ 85°C vs 0°C ~ 70°C), making it compatible for applications within the original device's operating envelope.

Q: What is the difference between M24C16-DRDW8TP/K and M24C16-FDW6TP? A: Both are STMicroelectronics 16Kbit I2C EEPROMs in 8-TSSOP packaging. The M24C16-DRDW8TP/K operates at 1 MHz clock frequency with 450 ns access time and includes AEC-Q100 automotive qualification with -40°C ~ 105°C temperature range. The M24C16-FDW6TP operates at 400 kHz with 900 ns access time and -40°C ~ 85°C temperature range. The higher clock frequency variant is suitable for applications requiring faster I2C communication.

Q: Are Rohm Semiconductor BR24G16FVT-3GE2 and BR24T16FVT-WE2 interchangeable? A: Both are Rohm Semiconductor 16Kbit I2C EEPROMs in 8-TSSOP packaging with identical 400 kHz clock frequency, 1.6V ~ 5.5V supply voltage, and -40°C ~ 85°C temperature range. They are functionally equivalent for I2C EEPROM applications.

Q: Does packaging format affect substitution compatibility? A: Packaging format (Tube, Tape & Reel, Cut Tape & Digi-Reel) affects procurement and assembly processes but does not affect electrical or mechanical compatibility. All substitute parts use identical 8-TSSOP surface mount package dimensions (0.173", 4.40mm width). Selection should match your assembly line requirements and inventory management procedures.

Q: Can I use CAV24C16YE-GT3 in non-automotive applications? A: Yes. The CAV24C16YE-GT3 is a 16Kbit I2C EEPROM with AEC-Q100 automotive qualification, but this certification does not restrict use in non-automotive applications. It provides identical I2C interface, 400 kHz clock frequency, 900 ns access time, and 2.5V ~ 5.5V supply voltage compatibility with extended temperature range (-40°C ~ 125°C).

Q: What supply voltage range must I verify for substitution? A: The original 24LC16B/ST requires 2.5V ~ 5.5V supply voltage. All substitute parts either match this range or provide extended lower voltage support (1.6V ~ 1.8V minimum). Verify your application's actual supply voltage falls within the substitute part's specified range. Parts with lower minimum voltage (1.6V, 1.7V, 1.8V) are compatible with 2.5V ~ 5.5V applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original 24LC16B/ST specification.

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