24AA16HT-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24AA16HT-I/ST is a 16Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-TSSOP surface mount configuration. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 1.7V to 5.5V across the industrial temperature range of -40°C to 85°C. The device is ROHS3 compliant with unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications, memory organization, interface protocol, and package compatibility to ensure functional interchangeability in circuit applications.

Substiute Parts

24AA16HT-I/ST

Microchip TechnologyIn Stock: 91024AA16HT-I/ST Datasheet

Current PartRFQ

24AA16H-I/ST

Microchip TechnologyIn Stock: 178224AA16H-I/ST Datasheet

DirectRFQ

24AA16T-I/ST

Microchip TechnologyIn Stock: 1867424AA16T-I/ST Datasheet

Parametric EquivalentRFQ

BR24G16FVT-3GE2

Rohm SemiconductorIn Stock: 29509BR24G16FVT-3GE2 Datasheet

MFR RecommendedRFQ

BR24S16FVT-WE2

Rohm SemiconductorIn Stock: 12474BR24S16FVT-WE2 Datasheet

MFR RecommendedRFQ

BR24T16FVT-WE2

Rohm SemiconductorIn Stock: 18166BR24T16FVT-WE2 Datasheet

MFR RecommendedRFQ

M24C16-DRDW8TP/K

STMicroelectronicsIn Stock: 20778M24C16-DRDW8TP/K Datasheet

MFR RecommendedRFQ

R1EX24016ATAS0I#S0

Renesas Electronics CorporationIn Stock: 3563R1EX24016ATAS0I#S0 Datasheet

MFR RecommendedRFQ

CAT24C16YI-GT3

onsemiIn Stock: 3859CAT24C16YI-GT3 Datasheet

Parametric EquivalentRFQ

M24C16-FDW6TP

STMicroelectronicsIn Stock: 5150M24C16-FDW6TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24AA16HT-I/ST are classified into three categories based on electrical and mechanical parameter alignment:

Direct Manufacturer Equivalent (Microchip Technology): The 24AA16H-I/ST maintains identical electrical specifications and memory organization but differs only in packaging format (Tube vs. Tape & Reel). This part is functionally interchangeable with no parameter deviations.

Parametric Equivalent (Same Manufacturer, Different Packaging): The 24AA16T-I/ST from Microchip Technology matches all core electrical parameters but is supplied in Cut Tape & Digi-Reel packaging. MSL rating differs at 3 (168 Hours) versus the original 1 (Unlimited).

Cross-Manufacturer Equivalents: Parts from Rohm Semiconductor (BR24G16FVT-3GE2, BR24S16FVT-WE2, BR24T16FVT-WE2), STMicroelectronics (M24C16-DRDW8TP/K, M24C16-FDW6TP), Renesas Electronics (R1EX24016ATAS0I#S0), and onsemi (CAT24C16YI-GT3) provide functional equivalence with matching 16Kbit capacity, 2K x 8 organization, I2C interface, and 8-TSSOP packaging. Minor variations exist in clock frequency (400 kHz to 1 MHz), access time (450 ns to 900 ns), supply voltage ranges (1.6V to 1.8V minimum), and operating temperature maximums (85°C to 105°C).

Key Parameters for Substitution Determination:

• Memory Size: 16Kbit (mandatory match)
• Memory Organization: 2K x 8 (mandatory match)
• Interface Protocol: I2C (mandatory match)
• Package Type: 8-TSSOP (mandatory match)
• Supply Voltage Compatibility: Minimum 1.7V, Maximum 5.5V (required overlap)
• Operating Temperature Range: -40°C to 85°C minimum (required coverage)

Parameter Comparison

Engineering Selection Recommendations

Microchip Technology Parts (24AA16H-I/ST, 24AA16T-I/ST): These are direct equivalents from the original manufacturer with identical electrical performance. Selection depends on packaging requirements: 24AA16H-I/ST for Tube packaging or 24AA16T-I/ST for Cut Tape & Digi-Reel format. Both maintain ROHS3 compliance and unlimited MSL rating.

STMicroelectronics M24C16-DRDW8TP/K: This part offers enhanced performance with 1 MHz clock frequency and 450 ns access time, providing faster operation than the 24AA16HT-I/ST. It includes AEC-Q100 automotive qualification and extends operating temperature to 105°C. Supply voltage and package compatibility are maintained. This selection is appropriate for applications requiring higher speed or automotive-grade reliability.

STMicroelectronics M24C16-FDW6TP: This part provides exact electrical parameter matching to the 24AA16HT-I/ST with identical 400 kHz clock frequency and 900 ns access time. It maintains ROHS3 compliance and is supplied in Cut Tape & Digi-Reel format.

Rohm Semiconductor Parts (BR24G16FVT-3GE2, BR24S16FVT-WE2, BR24T16FVT-WE2): These cross-manufacturer equivalents maintain 16Kbit capacity, 2K x 8 organization, I2C interface, and 8-TSSOP packaging. Supply voltage ranges vary slightly (1.6V minimum for BR24G16FVT-3GE2 and BR24T16FVT-WE2 versus 1.7V for BR24S16FVT-WE2). All maintain -40°C to 85°C operating temperature range and ROHS3 compliance.

Renesas Electronics R1EX24016ATAS0I#S0: This part matches core electrical specifications with 400 kHz clock frequency and 900 ns access time. Minimum supply voltage is 1.8V, which is compatible with the 1.7V to 5.5V range of the original part. ROHS3 compliance is maintained.

onsemi CAT24C16YI-GT3: This parametric equivalent provides identical electrical performance with 400 kHz clock frequency, 900 ns access time, and 1.7V to 5.5V supply voltage range. ROHS3 compliance and unlimited MSL rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 24AA16HT-I/ST with any of these parts without circuit modification?

A: Yes, all listed substitute parts maintain the same 16Kbit memory capacity, 2K x 8 organization, I2C interface protocol, and 8-TSSOP package footprint. Pin configuration and electrical interface are compatible. However, verify that your application's supply voltage range and operating temperature requirements fall within the specifications of the selected substitute part.

Q: What is the difference between the 24AA16HT-I/ST and 24AA16H-I/ST?

A: These parts are electrically identical with matching 400 kHz clock frequency, 900 ns access time, and 1.7V to 5.5V supply voltage range. The only difference is packaging format: 24AA16HT-I/ST is supplied in Tape & Reel while 24AA16H-I/ST is supplied in Tube. Both are ROHS3 compliant with unlimited MSL rating.

Q: Why does the M24C16-DRDW8TP/K have different specifications?

A: The M24C16-DRDW8TP/K operates at 1 MHz clock frequency with 450 ns access time, providing faster performance than the 24AA16HT-I/ST at 400 kHz and 900 ns. It also includes AEC-Q100 automotive qualification and extends operating temperature to 105°C. These enhancements make it suitable for performance-critical or automotive applications while maintaining backward compatibility through identical memory organization and I2C interface.

Q: Are there supply voltage compatibility concerns with cross-manufacturer substitutes?

A: Most substitutes maintain the 1.7V to 5.5V supply voltage range of the original part. However, BR24G16FVT-3GE2 and BR24T16FVT-WE2 specify 1.6V minimum, and R1EX24016ATAS0I#S0 specifies 1.8V minimum. Verify that your circuit's supply voltage falls within the selected part's specified range.

Q: What does the 8-TSSOP-B package designation mean for Rohm parts?

A: The 8-TSSOP-B is a variant of the standard 8-TSSOP package. Both maintain the same 0.173" width and 4.40mm overall dimensions with identical pin configuration and footprint compatibility. The "-B" designation indicates Rohm's specific package variant but does not affect circuit compatibility.

Q: Can I use these parts interchangeably in production?

A: Yes, all listed parts are functionally equivalent for the specified electrical and mechanical parameters. However, conduct design verification for any part substitution to confirm compatibility with your specific circuit requirements, particularly regarding supply voltage range, operating temperature, and I2C clock frequency tolerance.

Q: Which substitute offers the best availability?

A: According to current inventory data, the 24AA16T-I/ST from Microchip Technology offers the highest stock level at 18,567 pieces, followed by BR24G16FVT-3GE2 from Rohm Semiconductor at 29,400 pieces. Availability may vary by distributor and time.