24LC01B-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC01B-E/ST is a 1Kbit EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates via I2C interface at 400 kHz clock frequency and is housed in an 8-TSSOP surface mount package. The part is currently in active production status with 671 units available in stock.

Substitute parts are necessary when the original 24LC01B-E/ST becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives that meet the same functional and electrical requirements.

Substiute Parts

24LC01B-E/ST

Microchip TechnologyIn Stock: 69824LC01B-E/ST Datasheet

Current PartRFQ

M24C01-RDW6TP

STMicroelectronicsIn Stock: 53202M24C01-RDW6TP Datasheet

MFR RecommendedRFQ

M24C01-WDW6TP

STMicroelectronicsIn Stock: 111137M24C01-WDW6TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 24LC01B-E/ST is permissible when the replacement part meets the following criteria:

Required Matching Parameters:

• Memory Type: Non-Volatile EEPROM
• Memory Size: 1Kbit
• Memory Organization: 128 x 8
• Memory Interface: I2C
• Clock Frequency: 400 kHz
• Write Cycle Time: 5ms
• Package Type: 8-TSSOP
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Allowable Variations:

• Access Time: May be equal to or faster than 4.6 µs
• Voltage Supply Range: May be equal to or wider than 2.5V ~ 5.5V
• Operating Temperature: May be equal to or wider than -40°C ~ 125°C
• Packaging Format: Cut Tape (CT) or Digi-Reel acceptable as alternatives to Tube

Parameter Comparison

Engineering Selection Recommendations

M24C01-RDW6TP (STMicroelectronics): This substitute meets all required electrical and mechanical parameters. The part features faster access time (900 ns versus 4.6 µs) and wider voltage supply range (1.8V ~ 5.5V). Product status is Active. Operating temperature range is narrower (-40°C ~ 85°C) compared to the main part. This part is suitable for new designs requiring I2C EEPROM 1Kbit functionality in 8-TSSOP package.

M24C01-WDW6TP (STMicroelectronics): This substitute meets all required electrical and mechanical parameters with identical voltage supply range to the main part (2.5V ~ 5.5V). Access time is faster (900 ns). However, product status is listed as "Not For New Designs," which restricts its use in new development. Operating temperature range is narrower (-40°C ~ 85°C). This part is suitable only for legacy system maintenance or replacement applications.

Frequently Asked Questions (FAQ)

Q: Can M24C01-RDW6TP replace 24LC01B-E/ST in new designs? A: Yes. M24C01-RDW6TP meets all required parameters for 1Kbit I2C EEPROM functionality in 8-TSSOP package. The faster access time (900 ns) is compatible with applications designed for 4.6 µs access time. Verify that your application can operate within the narrower temperature range (-40°C ~ 85°C).

Q: What is the difference between M24C01-RDW6TP and M24C01-WDW6TP? A: Both parts are electrically equivalent with identical memory specifications and 900 ns access time. The primary difference is product status: M24C01-RDW6TP is Active, while M24C01-WDW6TP is Not For New Designs. M24C01-RDW6TP has wider voltage supply range (1.8V ~ 5.5V) compared to M24C01-WDW6TP (2.5V ~ 5.5V).

Q: Are there temperature range limitations when substituting? A: Yes. Both STMicroelectronics substitutes operate to -40°C ~ 85°C, which is narrower than the main part's -40°C ~ 125°C range. If your application requires operation above 85°C, the substitutes are not suitable.

Q: Can I use Cut Tape packaging instead of Tube packaging? A: Yes. Both M24C01-RDW6TP and M24C01-WDW6TP are available in Cut Tape (CT) & Digi-Reel format, which is functionally equivalent to Tube packaging for component selection purposes.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitutes are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the main part.