AT24CS04-STUM-T Equivalent & Substitute Parts

Part Overview

The AT24CS04-STUM-T is a 4Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in SOT-23-5 surface mount configuration. This device operates at 1 MHz clock frequency with 550 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 part is Active status and RoHS3 compliant.

Substitute parts are identified when design requirements change, inventory constraints occur, or when alternative performance characteristics better suit application needs while maintaining functional compatibility within the 4Kbit I2C EEPROM category.

Substiute Parts

AT24CS04-STUM-T

Microchip TechnologyIn Stock: 3373AT24CS04-STUM-T Datasheet

Current PartRFQ

24AA04HT-I/OT

Microchip TechnologyIn Stock: 941524AA04HT-I/OT Datasheet

MFR RecommendedRFQ

24LC04BHT-I/OT

Microchip TechnologyIn Stock: 238024LC04BHT-I/OT Datasheet

MFR RecommendedRFQ

24LC04BT-E/OT

Microchip TechnologyIn Stock: 2886124LC04BT-E/OT Datasheet

MFR RecommendedRFQ

24LC04BT-I/OT

Microchip TechnologyIn Stock: 2134224LC04BT-I/OT Datasheet

MFR RecommendedRFQ

AT24C04C-STUM-T

Microchip TechnologyIn Stock: 5221AT24C04C-STUM-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

• Memory Size: 4Kbit (mandatory)
• Memory Format: EEPROM (mandatory)
• Memory Interface: I2C (mandatory)
• Package Type: SOT-23-5 (mandatory)
• Mounting Type: Surface Mount (mandatory)

Secondary Performance Parameters:

• Clock Frequency: 1 MHz (main part) vs. 400 kHz (substitute parts) — lower frequency acceptable for I2C bus compatibility
• Access Time: 550 ns (main part) vs. 900 ns (substitute parts) — longer access time acceptable for non-time-critical applications
• Voltage Supply Range: Overlap required; main part supports 1.7V minimum, substitute parts support 2.5V minimum
• Operating Temperature: -40°C to 85°C (main part) vs. -40°C to 125°C (24LC04BT-E/OT) — extended range acceptable

Compliance Requirements:

• RoHS3 Compliant (all parts)
• REACH Unaffected (all parts)
• Active Product Status (all parts)

Substitute parts are grouped into two categories: MFR Recommended (direct functional substitutes with verified or active status) and Parametric Equivalent (matching clock frequency and access time specifications).

Parameter Comparison

Engineering Selection Recommendations

For Direct Performance Match (1 MHz, 550 ns Access Time): AT24C04C-STUM-T is the parametric equivalent, maintaining identical clock frequency and access time specifications. This part is suitable when the application requires the same timing characteristics as the AT24CS04-STUM-T. Both parts support the full 1.7V to 5.5V supply range and are RoHS3 compliant with Active product status.

For Extended Temperature Range Applications: 24LC04BT-E/OT extends the operating temperature to -40°C to 125°C, providing thermal margin for high-temperature environments. This part operates at 400 kHz with 900 ns access time and maintains 2.5V to 5.5V supply compatibility. It is available in high inventory (28,836 pcs) with verified programmability status.

For Low-Voltage Supply Requirements: 24AA04HT-I/OT and AT24CS04-STUM-T both support the minimum 1.7V supply voltage. The 24AA04HT-I/OT offers verified programmability status with 9,400 pcs inventory availability, though it operates at reduced clock frequency (400 kHz) and longer access time (900 ns).

For Tape & Reel Packaging: 24LC04BHT-I/OT is available in Tape & Reel format with 2,300 pcs inventory. This part operates at 400 kHz with 900 ns access time and supports 2.5V to 5.5V supply range.

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and Active product status, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I substitute AT24CS04-STUM-T with 24LC04BT-I/OT in my design? A: Yes, if your application tolerates reduced clock frequency (400 kHz vs. 1 MHz) and longer access time (900 ns vs. 550 ns). Both parts are 4Kbit I2C EEPROMs in SOT-23-5 packages with identical write cycle time (5 ms) and overlapping supply voltage ranges (2.5V to 5.5V). Verify that your I2C bus timing requirements accommodate the slower specifications.

Q: What is the difference between 24AA04HT-I/OT and 24LC04BT-I/OT? A: Both are 4Kbit I2C EEPROMs in SOT-23-5 packages with 400 kHz clock frequency and 900 ns access time. The primary difference is supply voltage range: 24AA04HT-I/OT supports 1.7V to 5.5V (lower minimum), while 24LC04BT-I/OT supports 2.5V to 5.5V. Select 24AA04HT-I/OT for applications requiring sub-2.5V operation.

Q: Is AT24C04C-STUM-T a direct replacement for AT24CS04-STUM-T? A: Yes, AT24C04C-STUM-T is a parametric equivalent with identical clock frequency (1 MHz), access time (550 ns), supply voltage range (1.7V to 5.5V), and operating temperature (-40°C to 85°C). Both parts are SOT-23-5 surface mount packages with RoHS3 compliance and Active status.

Q: Why do some substitute parts have different memory organization (256 x 8 x 2 vs. 512 x 8)? A: Memory organization describes the internal address structure. Both configurations deliver 4Kbit total capacity and are functionally compatible for I2C EEPROM applications. The 256 x 8 x 2 organization uses dual 256-byte pages, while 512 x 8 uses a single 512-byte address space. I2C interface compatibility is maintained across both organizations.

Q: Can I use 24LC04BT-E/OT in applications requiring -40°C to 85°C operation? A: Yes. The 24LC04BT-E/OT is rated for -40°C to 125°C, which exceeds the -40°C to 85°C requirement. This part provides thermal margin and is suitable for the specified temperature range.

Q: What packaging formats are available for these substitute parts? A: AT24CS04-STUM-T, 24AA04HT-I/OT, 24LC04BT-E/OT, and 24LC04BT-I/OT are available in Cut Tape & Digi-Reel format. 24LC04BHT-I/OT is available in Tape & Reel format. Select based on your procurement and assembly requirements.