AT24C16BN-SH-T EEPROM 16Kbit I2C Equivalent & Substitute Parts

Part Overview

The AT24C16BN-SH-T is a 16Kbit EEPROM memory IC with I2C interface manufactured by Microchip Technology. This part operates at 1 MHz clock frequency with 550 ns access time and supports a supply voltage range of 1.8V to 5.5V. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across memory capacity, interface protocol, package type, and electrical operating parameters.

Key Parameters

Parameter	Value
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	550 ns
Write Cycle Time	5ms
Voltage Supply Range	1.8V ~ 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

Substitute Part Grouping Explanation

Substitution logic is based on the following critical parameters that must align with the AT24C16BN-SH-T:

Primary Compatibility Criteria:

Memory capacity: 16Kbit (2K x 8 organization)
Interface protocol: I2C
Package footprint: 8-SOIC with 0.154" (3.90mm) width
Surface mount technology
RoHS3 compliance

Secondary Compatibility Criteria:

Clock frequency: 1 MHz (primary part specification)
Access time: 550 ns (primary part specification)
Supply voltage range: Minimum 1.8V support
Operating temperature range: -40°C to 85°C minimum

Substitute parts are grouped into two categories:

Category A - Direct 1 MHz Substitutes (Identical Clock Frequency): Parts maintaining 1 MHz operation with 550 ns access time. These provide drop-in replacement capability without timing adjustments.

Category B - 400 kHz Substitutes (Reduced Clock Frequency): Parts operating at 400 kHz with 900 ns access time. These are functionally compatible but operate at reduced speed. Selection requires verification that system I2C bus timing accommodates 400 kHz operation.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Temp Range	Package	Status
AT24C16BN-SH-T	Microchip	16Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Obsolete
24AA16H-I/SN	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24AA16HT-I/SN	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24AA16T-E/SN	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active
24AA16T-I/SN	Microchip	16Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24C16C-SSHM-T	Microchip	16Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24CS16-SSHM-T	Microchip	16Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR24G16F-3GTE2	Rohm	16Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR24G16FJ-3AGTE2	Rohm	16Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR24G16FJ-3GTE2	Rohm	16Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR24L16FJ-WE2	Rohm	16Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active

Engineering Selection Recommendations

For Direct Replacement (1 MHz Operation):

AT24C16C-SSHM-T and AT24CS16-SSHM-T are active Microchip products maintaining 1 MHz clock frequency and 550 ns access time specifications. Both are RoHS3 compliant. AT24C16C-SSHM-T offers higher inventory availability (40,400 units) and verified programmability status. AT24CS16-SSHM-T provides an alternative with lower inventory (4,013 units) and unverified programmability status.

BR24G16FJ-3AGTE2 (Rohm Semiconductor) operates at 1 MHz with 8-SOP-J package variant. This part supports extended supply voltage range (1.6V minimum) and maintains 8-SOIC footprint compatibility. Programmability is unverified.

For Speed-Reduced Operation (400 kHz):

Microchip 24AA16 series parts (24AA16H-I/SN, 24AA16HT-I/SN, 24AA16T-E/SN, 24AA16T-I/SN) are active products with 400 kHz operation. All maintain 16Kbit capacity and 8-SOIC package. 24AA16T-I/SN offers highest inventory (13,300 units) with verified programmability. 24AA16T-E/SN extends operating temperature to 125°C.

Rohm BR24G16F-3GTE2, BR24G16FJ-3GTE2, and BR24L16FJ-WE2 provide 400 kHz alternatives with 8-SOIC footprint. BR24L16FJ-WE2 is verified programmable with 25,673 units in stock and 1.8V minimum supply voltage matching the original part.

Compliance and Certification:

All listed substitutes maintain RoHS3 compliance and REACH unaffected status. Moisture sensitivity levels vary (MSL 1 or MSL 3). Parts with MSL 3 require 168-hour floor life management.

Frequently Asked Questions (FAQ)

Q: Can 400 kHz parts replace the 1 MHz AT24C16BN-SH-T directly?

A: 400 kHz parts are functionally compatible but operate at reduced speed. Direct replacement requires verification that the I2C bus master supports 400 kHz operation and that system timing requirements do not mandate 1 MHz performance. Access time increases from 550 ns to 900 ns.

Q: What is the difference between 8-SOIC and 8-SOP-J packages?

A: Both packages maintain 0.154" (3.90mm) width and 8-pin surface mount configuration. 8-SOP-J is a Rohm variant of the standard 8-SOIC footprint. PCB layout compatibility is maintained for direct substitution.

Q: Are Rohm BR24 series parts pin-compatible with Microchip AT24C16 and 24AA16 parts?

A: Yes. All listed parts maintain identical I2C interface pinout and 8-SOIC package footprint. Pin-to-pin compatibility is confirmed across manufacturers.

Q: What does "DiGi-Electronics Programmable: Verified" mean?

A: Verified programmability indicates the part has been tested and confirmed functional through DiGi-Electronics quality assurance processes. Unverified parts have not undergone this specific testing but remain functionally equivalent based on manufacturer specifications.

Q: Can I use AT24CS16-SSHM-T as a substitute for AT24C16C-SSHM-T?

A: Both parts maintain identical electrical specifications (1 MHz, 550 ns, 16Kbit, 8-SOIC). AT24CS16 includes a serial number feature. Selection depends on whether serial number functionality is required in the application.

Q: What supply voltage range must I verify for substitution?

A: The original AT24C16BN-SH-T specifies 1.8V to 5.5V. All listed substitutes support this range or exceed it. Rohm parts extend minimum voltage to 1.6V, providing additional margin. Verify your system supply voltage falls within the substitute part's specified range.

Q: How does moisture sensitivity level (MSL) affect part selection?

A: MSL 1 parts have unlimited floor life. MSL 3 parts require 168-hour floor life management after moisture exposure. For high-volume production with extended lead times, MSL 1 parts (most listed substitutes) are preferred to avoid bake-out procedures.

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