24LC21A-I/SN The Microchip Technology 24LC21A-I/SN is a 1Kbit serial EEPROM IC featuring an I2C interface and operating at up to 400kHz. It is supplied in an 8-SOIC package.
Mfr Part #:

24LC21A-I/SN

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology 24LC21A-I/SN is a 1Kbit serial EEPROM IC featuring an I2C interface and operating at up to 400kHz. It is supplied in an 8-SOIC package.
✓ Total Stock: 18,771 pcs
$ Price Range: $1.24

24LC21A-I/SN Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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18,771 pcs
18771 pcs On Request 1 On Request On Request 2020+ On Request On Request

24LC21A-I/SN Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Access Time
Clock Frequency
ESD Protection
Memory Format
Memory Interface
Memory Organization
Memory Size
Memory Type
Mounting Type
Operating Temperature
Supplier Device Package
Technology
Voltage
Write Cycle Time

24LC21A-I/SN Description

Short technical summary and product information.

The Microchip Technology 24LC21A-I/SN is a 128 x 8-bit dual-mode Electrically Erasable PROM (EEPROM) designed for applications requiring serial transmission of configuration and control information. This device operates with a single supply voltage ranging from 2.5V to 5.5V and supports I2C compatible 2-wire serial interface bus communication.

 

Key electrical specifications include a memory size of 1Kbit, organized as 128 x 8 bits, with a clock frequency compatibility of 400 kHz. The device offers a typical active current of 1 mA and a standby current of 10 μA. It ensures 1,000,000 erase/write cycles and data retention exceeding 200 years.

 

Packaged in an 8-SOIC (0.154", 3.90mm Width) surface mount package, the 24LC21A-I/SN is suitable for industrial temperature ranges of -40°C to 85°C. It implements DDC1/DDC2 interface for monitor identification and supports both transmit-only and bidirectional modes.

 

This EEPROM is designed for applications needing reliable data storage and serial transmission, such as configuration data storage in electronic devices.

24LC21A-I/SN Quick Information

Product Type: EEPROM IC
Canonical Name: Microchip Technology 24LC21A-I/SN 1Kbit I²C EEPROM
Subcategory: Serial EEPROM

24LC21A-I/SN Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

24LC21A-I/SN Estimated Pricing

Qty Low High
1+ $1.24 $1.24

Estimated market price range - modelled values for guidance only, not live distributor offers.

24LC21A-I/SN Features

  • 1Kbit I2C serial EEPROM.
  • Operates from 2.5V to 5.5V.
  • 400 kHz clock frequency compatibility.
  • 1,000,000 erase/write cycles.
  • Data retention over 200 years.

24LC21A-I/SN Applications

  • Monitor identification data storage.
  • Configuration data storage.
  • Serial control information storage.

24LC21A-I/SN FAQs

7 frequently asked questions generated from this part’s specifications.
What is the memory size of the 24LC21A-I/SN?

The 24LC21A-I/SN has a memory size of 1 Kbit.

What is the operating voltage range for the 24LC21A-I/SN?

The operating voltage range for the 24LC21A-I/SN is 2.5V to 5.5V.

What is the operating temperature range for this EEPROM?

The operating temperature range is -40°C to 85°C.

What package type is the 24LC21A-I/SN supplied in?

The 24LC21A-I/SN is supplied in an 8-SOIC package.

What is the clock frequency compatibility for the 24LC21A-I/SN?

The device is compatible with 400 kHz clock frequencies.

How many erase/write cycles are guaranteed for the 24LC21A-I/SN?

The 24LC21A-I/SN is ensured for 1,000,000 erase/write cycles.

What is the data retention period for the 24LC21A-I/SN?

Data retention for the 24LC21A-I/SN is greater than 200 years.

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