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24AA16-I/STG
Microchip Technology
IC EEPROM 16KBIT I2C 8TSSOP
4766 Pcs New Original In Stock
EEPROM Memory IC 16Kbit I2C 400 kHz 900 ns 8-TSSOP
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5.0 / 5.0
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24AA16-I/STG
Product Overview
1230303
DiGi Electronics Part Number
24AA16-I/STG-DGManufacturer
Microchip Technology
24AA16-I/STG
Description
IC EEPROM 16KBIT I2C 8TSSOPInventory
4766 Pcs New Original In Stock
EEPROM Memory IC 16Kbit I2C 400 kHz 900 ns 8-TSSOP
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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24AA16-I/STG Technical Specifications
Category
Memory, Memory
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
16Kbit
Memory Organization
2K x 8
Memory Interface
I2C
Clock Frequency
400 kHz
Write Cycle Time - Word, Page
5ms
Access Time
900 ns
Voltage - Supply
1.7V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
8-TSSOP
Base Product Number
24AA16
Datasheet & Documents
HTML Datasheet
24AA16-I/STG-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Standard Package
100
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
서비스 담당자가 항상 친절하게 응대해주셔서 감사합니다.
Dec 02, 2025
他們的物流速度令人驚喜，常常在我預估的時間內就收到商品，方便又安心。
Dec 02, 2025
Their pricing advantages and product consistency make them stand out in the market.
Dec 02, 2025
The post-purchase support from DiGi Electronics is second to none.
Dec 02, 2025
Exquisite packaging paired with exceptional tracking made this one of my best online purchases.
Dec 02, 2025
Their post-purchase support demonstrates a commitment to customer satisfaction that is rare to find.
Dec 02, 2025
Received my order promptly and in perfect condition thanks to their secure packaging.
Dec 02, 2025
Packaging was robust, preventing any movement or damage during transit.
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Frequently Asked Questions (FAQ)
Is the 24AA16-I/STG still a viable choice for new designs given its obsolete status, and what are the risks of continuing to use it in production?
The 24AA16-I/STG is marked as obsolete by Microchip Technology, which means it is no longer recommended for new designs and may face future supply discontinuation. Continuing to use it in new production runs introduces long-term supply chain risk, potential last-time-buy scenarios, and lack of technical support. We strongly recommend migrating to a drop-in or functionally equivalent alternative such as the AT24CS16-XHM-T or 24AA16H-I/ST, which are active and offer improved features like higher I2C speeds or enhanced security. If you must use the 24AA16-I/STG for legacy compatibility, secure inventory through authorized distributors and validate a second-source strategy immediately.
Can the 24AA16-I/STG be safely replaced with the AT24CS16-XHM-T in an existing I2C-based design without firmware changes?
Yes, the AT24CS16-XHM-T from Microchip is a direct functional replacement for the 24AA16-I/STG in most applications, sharing the same 16Kbit EEPROM capacity, 2K x 8 organization, 1.7V to 5.5V supply range, and 8-TSSOP package. Both support 400 kHz I2C operation and have identical pinouts, enabling drop-in replacement. However, the AT24CS16 includes additional features like a unique 128-bit serial number and higher endurance (1 million write cycles vs. 1 million typical for 24AA16), which do not affect backward compatibility. Verify that your firmware does not rely on undocumented behaviors or timing margins near the 900 ns access time, as subtle differences in internal architecture could impact edge-case timing.
What are the key reliability concerns when operating the 24AA16-I/STG at the upper end of its voltage range (5.5V) in high-temperature environments (85°C)?
Operating the 24AA16-I/STG at 5.5V and 85°C simultaneously pushes it to the limits of its specified operating conditions, increasing the risk of accelerated oxide degradation and reduced data retention over time. Although the part is rated for this combination, real-world field data suggests that EEPROM endurance and retention can degrade faster under combined high voltage and temperature stress. To mitigate risk, consider derating the supply voltage to 3.3V if system margins allow, or switch to a more robust alternative like the M24C16-DRDW8TP/K, which offers better high-temperature performance and is actively supported. Always validate long-term data retention through accelerated life testing if your application stores critical configuration data.
How does the write endurance of the 24AA16-I/STG compare to modern EEPROMs like the BR24G16FVT-3GE2, and what design practices minimize wear in frequently updated applications?
The 24AA16-I/STG guarantees 1 million write cycles per word, which is standard for legacy EEPROMs, but newer parts like the BR24G16FVT-3GE2 from ROHM offer similar or better endurance with improved write algorithms and lower power consumption. In applications requiring frequent updates (e.g., logging or calibration storage), the 24AA16-I/STG is prone to premature wear if not managed carefully. Implement wear-leveling algorithms in firmware, buffer writes in RAM, and batch updates to minimize write frequency. Additionally, avoid writing to the same address repeatedly—rotate across multiple addresses within the 2K x 8 space. For high-write applications, consider migrating to FRAM or a modern EEPROM with built-in wear leveling.
What layout and signal integrity considerations are critical when integrating the 24AA16-I/STG into a high-noise industrial environment with long I2C traces?
In high-noise environments with long I2C traces, the 24AA16-I/STG’s 400 kHz I2C interface is susceptible to signal degradation, glitches, and communication failures due to its relatively slow rise times and lack of built-in noise immunity. To ensure reliable operation, keep I2C traces as short as possible, use pull-up resistors (typically 2.2–4.7 kΩ) close to the controller, and route signals away from high-current or switching nodes. Consider adding series termination resistors (22–100 Ω) near the 24AA16-I/STG to dampen reflections. If noise persists, use a dedicated I2C buffer or switch to a more robust interface like SPI-based EEPROMs. Always validate signal integrity with an oscilloscope, especially during write cycles, which are more timing-sensitive and prone to corruption.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
24AA16-I/STG CAD Models
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