24LC16BHT-I/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC16BHT-I/SN is a 16Kbit I2C EEPROM memory IC manufactured by Microchip Technology in 8-SOIC 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 -40°C to 85°C. The device is ROHS3 compliant and carries an MSL rating of 1 (Unlimited). Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, electrical specifications, and package compatibility to ensure functional interchangeability in circuit applications.

Key Parameters

Parameter	Specification
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-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 24LC16BHT-I/SN are classified based on the following substitution criteria:

Direct Manufacturer Equivalents maintain identical electrical and mechanical specifications with only packaging format variations (Tape & Reel vs. Tube vs. Cut Tape). These parts share the same base product number 24LC16B and are fully interchangeable.

Manufacturer Recommended Substitutes from Microchip Technology include the 24AA16T-I/SN series, which offers extended supply voltage range (1.7V ~ 5.5V) and the 24LC16BT-E/SN variant with extended operating temperature range (-40°C ~ 125°C). These maintain core memory specifications while providing enhanced environmental performance.

Cross-Manufacturer Alternatives from Rohm Semiconductor (BR24G16FJ, BR24L16FJ-WE2, BR24S16F-WE2) provide functional equivalence with 16Kbit I2C EEPROM architecture. The BR24G16FJ-3GTE2 and BR24L16FJ-WE2 variants operate at 400 kHz matching the main part frequency, while BR24G16FJ-3AGTE2 operates at 1 MHz with faster 550 ns access time.

Critical Substitution Parameters:

Memory capacity: 16Kbit (2K x 8 organization)
Interface protocol: I2C
Clock frequency: 400 kHz (primary criterion) or 1 MHz (higher performance alternative)
Package footprint: 8-SOIC form factor
Supply voltage compatibility: Minimum 2.5V support required for direct equivalence
Write cycle time: 5ms standard

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Packaging Format	Inventory
24LC16BHT-I/SN	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	1179 Pcs
24LC16BH-I/SN	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tube	2200 Pcs
24AA16T-I/SN	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	13300 Pcs
24LC16B-I/SN	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tube	6700 Pcs
24LC16BT-E/SN	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Cut Tape & Digi-Reel	7550 Pcs
24LC16BT-I/SN	Microchip	16Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	27233 Pcs
AT24CS16-SSHM-T	Microchip	16Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	4013 Pcs
BR24G16FJ-3AGTE2	Rohm	16Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	5215 Pcs
BR24G16FJ-3GTE2	Rohm	16Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	25200 Pcs
BR24L16FJ-WE2	Rohm	16Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	25673 Pcs
BR24S16F-WE2	Rohm	16Kbit	400 kHz	Not specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	18890 Pcs

Engineering Selection Recommendations

Tier 1 - Direct Equivalents: The 24LC16BH-I/SN and 24LC16B-I/SN are direct functional equivalents differing only in packaging format. Selection between these and the main part depends on procurement requirements and supply chain availability. All three maintain identical electrical performance and ROHS3 compliance.

Tier 2 - Enhanced Performance Variants: The 24LC16BT-I/SN offers the highest inventory availability (27233 Pcs) with identical specifications to the main part. The 24LC16BT-E/SN extends operating temperature to 125°C for applications requiring enhanced thermal performance. The 24AA16T-I/SN provides extended supply voltage range (1.7V minimum) for low-power applications while maintaining 400 kHz I2C operation.

Tier 3 - Higher Speed Alternative: The AT24CS16-SSHM-T operates at 1 MHz with 550 ns access time, providing faster I2C communication for time-critical applications. This part requires verification of system I2C bus compatibility at elevated clock frequencies.

Tier 4 - Cross-Manufacturer Options: Rohm Semiconductor parts (BR24G16FJ-3GTE2, BR24L16FJ-WE2, BR24S16F-WE2) provide functional I2C EEPROM equivalence at 400 kHz with lower minimum supply voltages (1.6V to 1.8V). These are suitable for battery-powered or low-voltage applications. All cross-manufacturer substitutes maintain ROHS3 compliance and MSL 1 rating.

Compliance Considerations: All listed substitutes maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification matching the main part. MSL ratings are consistent across all options (MSL 1 or MSL 3 for AT24CS16-SSHM-T), supporting standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24LC16BHT-I/SN with 24LC16BH-I/SN? A: Yes. Both parts are Microchip 16Kbit I2C EEPROMs with identical electrical specifications (400 kHz, 900 ns access time, 2.5V-5.5V supply). The difference is packaging format: 24LC16BHT-I/SN is supplied in Tape & Reel while 24LC16BH-I/SN is supplied in Tube. Electrical performance and PCB footprint are identical.

Q: What is the difference between 24LC16BT-I/SN and 24LC16BT-E/SN? A: Both parts operate at 400 kHz with 900 ns access time in 8-SOIC packaging. The primary difference is operating temperature range: 24LC16BT-I/SN operates -40°C to 85°C, while 24LC16BT-E/SN extends to 125°C. Select the -E variant for high-temperature applications.

Q: Can I use AT24CS16-SSHM-T as a direct replacement? A: AT24CS16-SSHM-T is functionally compatible but operates at 1 MHz I2C frequency versus the standard 400 kHz. This faster operation requires verification that your I2C bus and host controller support 1 MHz clock speeds. Access time is also faster (550 ns vs. 900 ns). Supply voltage range is extended to 1.7V minimum.

Q: Are Rohm BR24 series parts compatible with Microchip 24LC16B? A: Yes, Rohm BR24G16FJ-3GTE2, BR24L16FJ-WE2, and BR24S16F-WE2 are functionally equivalent 16Kbit I2C EEPROMs. All operate at 400 kHz with 2K x 8 organization. Rohm parts feature lower minimum supply voltages (1.6V to 1.8V) compared to Microchip's 2.5V minimum. Package footprints are compatible 8-SOIC form factors.

Q: What does packaging format (Tape & Reel vs. Tube vs. Cut Tape) mean for my application? A: Packaging format affects procurement and assembly processes but not electrical performance. Tape & Reel and Cut Tape formats are optimized for automated pick-and-place assembly. Tube format is suitable for manual assembly or lower-volume production. All three formats contain identical die and electrical specifications.

Q: Which substitute offers the best inventory availability? A: The 24LC16BT-I/SN offers the highest inventory at 27233 Pcs, followed by BR24G16FJ-3GTE2 at 25200 Pcs and BR24L16FJ-WE2 at 25673 Pcs. These high-availability options provide supply chain flexibility while maintaining full electrical equivalence.

Q: Can I use a 1 MHz part in a 400 kHz I2C system? A: Yes. The AT24CS16-SSHM-T and BR24G16FJ-3AGTE2 operate at 1 MHz but are backward compatible with 400 kHz I2C buses. The I2C protocol allows devices to operate at lower clock frequencies than their maximum rating. However, the host controller must support the selected clock frequency.

Q: Are all these parts RoHS compliant? A: Yes. All listed parts maintain ROHS3 compliance and REACH unaffected status, matching the main part's regulatory certifications. MSL ratings are consistent (MSL 1 for most parts, MSL 3 for AT24CS16-SSHM-T), supporting standard PCB assembly processes.

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