AT24CS16-STUM-T Equivalent & Substitute Parts

Part Overview

The AT24CS16-STUM-T is a 16Kbit EEPROM memory IC with I2C interface manufactured by Microchip Technology. This component operates at 1 MHz clock frequency with 550 ns access time, supporting a supply voltage range of 1.7V to 5.5V and operating temperatures from -40°C to 85°C. The device is packaged in SOT-23-5 and is ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility is required across manufacturing batches while maintaining functional equivalence.

Substiute Parts

AT24CS16-STUM-T

Microchip TechnologyIn Stock: 857AT24CS16-STUM-T Datasheet

Current PartRFQ

24AA16HT-I/OT

Microchip TechnologyIn Stock: 1373324AA16HT-I/OT Datasheet

MFR RecommendedRFQ

24LC16BHT-I/OT

Microchip TechnologyIn Stock: 321024LC16BHT-I/OT Datasheet

MFR RecommendedRFQ

AT24C16C-STUM-T

Microchip TechnologyIn Stock: 22941AT24C16C-STUM-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT24CS16-STUM-T is determined by the following critical parameters:

Core Functional Requirements:

• Memory Size: 16Kbit (mandatory match)
• Memory Organization: 2K x 8 (mandatory match)
• Memory Interface: I2C (mandatory match)
• Package Type: SOT-23-5 (mandatory match)
• Mounting Type: Surface Mount (mandatory match)

Performance Compatibility Criteria:

• Clock Frequency: 1 MHz or higher (backward compatible)
• Access Time: 550 ns or faster (backward compatible)
• Write Cycle Time: 5ms (mandatory match)
• Voltage Supply Range: Must encompass or match 1.7V ~ 5.5V
• Operating Temperature: Must support -40°C ~ 85°C range

The substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts with identical core functionality but reduced clock frequency (400 kHz) and slower access time (900 ns). These operate within the same voltage and temperature specifications.

Parametric Equivalent: Parts with identical electrical performance (1 MHz, 550 ns) and packaging, differing only in packaging format and inventory status.

Parameter Comparison

Engineering Selection Recommendations

AT24C16C-STUM-T (Parametric Equivalent)

This part provides identical electrical performance to the AT24CS16-STUM-T with matching 1 MHz clock frequency and 550 ns access time. Both parts maintain the same voltage supply range (1.7V ~ 5.5V) and operating temperature specifications. The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and higher inventory availability (22,858 units). Selection of this part requires no circuit redesign or timing adjustments.

24AA16HT-I/OT (MFR Recommended Substitute)

This part operates at reduced clock frequency (400 kHz) and slower access time (900 ns) compared to the primary part. It maintains identical voltage supply range (1.7V ~ 5.5V) and operating temperature specifications. This substitute is suitable for applications where the reduced performance parameters do not impact system timing requirements. Higher inventory availability (13,713 units) supports supply chain flexibility.

24LC16BHT-I/OT (MFR Recommended Substitute)

This part operates at reduced clock frequency (400 kHz) and slower access time (900 ns). The voltage supply range is narrower (2.5V ~ 5.5V), which restricts use in applications requiring operation below 2.5V. Operating temperature range matches the primary part. DiGi-Electronics programmable verification status is confirmed. Lower inventory availability (3,200 units) may impact procurement timelines.

Frequently Asked Questions (FAQ)

Q: Can 24AA16HT-I/OT replace AT24CS16-STUM-T in all applications?

A: The 24AA16HT-I/OT is functionally compatible for applications where reduced clock frequency (400 kHz versus 1 MHz) and slower access time (900 ns versus 550 ns) do not violate system timing requirements. Both parts support identical voltage supply range and operating temperature specifications. Circuit redesign is not required, but timing analysis must confirm compatibility.

Q: What is the key difference between 24LC16BHT-I/OT and 24AA16HT-I/OT?

A: Both parts share identical memory specifications, clock frequency, and access time. The primary difference is voltage supply range: 24LC16BHT-I/OT operates from 2.5V to 5.5V, while 24AA16HT-I/OT operates from 1.7V to 5.5V. Applications requiring operation below 2.5V must use 24AA16HT-I/OT. Additionally, 24LC16BHT-I/OT has verified DiGi-Electronics programmable status.

Q: Is AT24C16C-STUM-T a direct replacement for AT24CS16-STUM-T?

A: Yes. AT24C16C-STUM-T provides identical electrical performance with matching 1 MHz clock frequency, 550 ns access time, voltage supply range (1.7V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). Both use SOT-23-5 packaging. The only distinction is packaging format and inventory status. No circuit modifications are required.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: All substitute parts use identical SOT-23-5 packaging and surface mount mounting type, enabling direct PCB footprint compatibility. However, timing-critical applications must verify that reduced clock frequency and access time specifications of MFR recommended substitutes do not violate system requirements. Voltage supply range compatibility must also be confirmed, particularly for 24LC16BHT-I/OT in low-voltage applications.

Q: What compliance certifications apply to all substitute parts?

A: All parts listed are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.32.0051. All parts maintain unlimited moisture sensitivity rating (MSL 1). Compliance status is consistent across all substitutes.