24LC16B-I/STG EEPROM 16Kbit I2C Equivalent & Substitute Parts

Part Overview

The 24LC16B-I/STG is a 16Kbit non-volatile EEPROM memory IC with I2C interface manufactured by Microchip Technology. This part operates at 400 kHz clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V across an operating temperature range of -40°C to 85°C. The device is packaged in 8-TSSOP surface mount configuration and is ROHS3 compliant.

The 24LC16B-I/STG is currently listed as obsolete. Locating equivalent or substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements.

Key Parameters

Parameter	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	-40°C ~ 85°C
Package Type	8-TSSOP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC16B-I/STG is determined by the following core parameters: memory size (16Kbit), memory organization (2K x 8), I2C interface, package type (8-TSSOP), and RoHS compliance status. Parts meeting these criteria are classified into the following groups:

Direct Packaging Equivalent (Tube): 24LC16B-I/ST shares identical electrical specifications and packaging format with the main part, differing only in supply packaging (Tube vs. standard).

Microchip 24AA16 Series (Extended Voltage Range): 24AA16-E/ST, 24AA16-I/ST, and 24AA16H-I/ST provide lower minimum supply voltage (1.7V vs. 2.5V) and extended temperature range options (-40°C to 125°C for 24AA16-E/ST). These parts maintain 400 kHz I2C operation and 16Kbit capacity.

Microchip 24LC16B Extended Temperature Variants: 24LC16B-E/ST and 24LC16BH-E/ST extend operating temperature to -40°C to 125°C while maintaining the 2.5V minimum supply voltage and 400 kHz clock frequency.

Microchip 24LC16BH Series: 24LC16BH-I/ST and 24LC16BH-E/ST provide parametric equivalence with identical electrical performance and 8-TSSOP packaging.

High-Speed Alternative (1 MHz): AT24CS16-XHM-T operates at 1 MHz clock frequency with 550 ns access time, offering improved performance while maintaining 16Kbit capacity and I2C interface. Supply voltage range is 1.7V to 5.5V.

Rohm Semiconductor BR24G16 Series: BR24G16FVT-3AGE2 and BR24G16FVT-3GE2 provide cross-manufacturer alternatives with 16Kbit capacity, I2C interface, and 8-TSSOP packaging. BR24G16FVT-3GE2 operates at 400 kHz; BR24G16FVT-3AGE2 operates at 1 MHz.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Operating Temperature	Package	Product Status
24LC16B-I/STG	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Obsolete
24LC16B-I/ST	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA16-E/ST	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
24AA16-I/ST	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA16H-I/ST	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24LC16B-E/ST	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
24LC16BH-E/ST	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
24LC16BH-I/ST	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
AT24CS16-XHM-T	Microchip	16Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24G16FVT-3AGE2	Rohm	16Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24G16FVT-3GE2	Rohm	16Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select 24LC16B-I/ST. This part maintains all electrical and thermal specifications of the obsolete 24LC16B-I/STG while offering active product status and higher inventory availability (3858 units in stock).

For Extended Temperature Operation (-40°C to 125°C): Select 24LC16B-E/ST or 24LC16BH-E/ST. Both parts maintain the 2.5V minimum supply voltage requirement while extending the upper operating temperature limit by 40°C. These are suitable for applications requiring enhanced thermal performance.

For Lower Supply Voltage Designs (1.7V Minimum): Select 24AA16-E/ST, 24AA16-I/ST, or 24AA16H-I/ST. These parts reduce the minimum supply voltage from 2.5V to 1.7V, enabling operation in low-power or battery-powered applications. The 24AA16-E/ST additionally provides -40°C to 125°C temperature range.

For High-Speed I2C Operation (1 MHz): Select AT24CS16-XHM-T or BR24G16FVT-3AGE2. Both parts operate at 1 MHz clock frequency with reduced access time (550 ns for AT24CS16-XHM-T), suitable for applications requiring faster I2C communication. AT24CS16-XHM-T is Microchip-manufactured; BR24G16FVT-3AGE2 is Rohm-manufactured.

For Cross-Manufacturer Compatibility: Select BR24G16FVT-3GE2 (400 kHz operation) or BR24G16FVT-3AGE2 (1 MHz operation). Both Rohm parts provide 16Kbit I2C EEPROM functionality in 8-TSSOP packaging with active product status and high inventory availability (29400 units for BR24G16FVT-3GE2).

All recommended substitutes maintain ROHS3 compliance and MSL rating of 1 (Unlimited) or MSL 3 (168 Hours for AT24CS16-XHM-T).

Frequently Asked Questions (FAQ)

Q: Can 24LC16B-I/ST be used as a direct replacement for 24LC16B-I/STG?

A: Yes. 24LC16B-I/ST is electrically and functionally identical to 24LC16B-I/STG. The only difference is packaging format (Tube vs. standard). Both parts operate at 400 kHz, support 2.5V to 5.5V supply voltage, and are rated for -40°C to 85°C operation.

Q: What is the key difference between 24LC16B and 24AA16 series parts?

A: The primary difference is minimum supply voltage. 24LC16B series requires 2.5V minimum; 24AA16 series operates down to 1.7V minimum. Both maintain identical 16Kbit capacity, 400 kHz I2C operation, and 8-TSSOP packaging. 24AA16-E/ST additionally extends operating temperature to 125°C.

Q: Are Rohm BR24G16 parts compatible with Microchip 24LC16B designs?

A: Yes, with parameter verification. BR24G16FVT-3GE2 matches 400 kHz I2C operation and 16Kbit capacity. BR24G16FVT-3AGE2 operates at 1 MHz. Both use 8-TSSOP packaging and support 1.6V to 5.5V supply voltage. Verify I2C address compatibility and clock frequency requirements in your application.

Q: What is the advantage of AT24CS16-XHM-T over 24LC16B-I/ST?

A: AT24CS16-XHM-T operates at 1 MHz clock frequency with 550 ns access time, compared to 400 kHz and 900 ns for 24LC16B-I/ST. This provides faster I2C communication. AT24CS16-XHM-T also supports lower minimum supply voltage (1.7V vs. 2.5V). Both maintain 16Kbit capacity and 8-TSSOP packaging.

Q: Can I use a 1 MHz part in a 400 kHz I2C system?

A: Yes. Parts rated for 1 MHz operation are backward compatible with 400 kHz systems. The I2C bus clock frequency is determined by the master controller, not the slave device. A 1 MHz-rated EEPROM operates correctly on a 400 kHz I2C bus.

Q: What is the MSL (Moisture Sensitivity Level) difference between parts?

A: Most substitutes carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. AT24CS16-XHM-T carries MSL 3 (168 Hours), requiring dry storage and baking procedures before reflow soldering if exposed to moisture. Verify MSL requirements for your manufacturing process.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original 24LC16B-I/STG specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message