Overview
The 24LC21A/SN is an EEPROM made by Microchip Technology in a SOIC-8 package with 8 pins. -40℃~+85℃ 1,000,000 cycles 10ms 1Kbit 2.5V~5.5V 200 Years 400kHz Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CAT24C21WI-G, from EasyEDA) and its footprint (Package_SO:SO-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 9 are in stock at JLCPCB (part C1352010).
Symbol
Footprint
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | NC | Unspecified |
| 2 | NC | Unspecified |
| 3 | NC | Unspecified |
| 4 | VSS | Unspecified |
| 5 | SDA | Unspecified |
| 6 | SCL | Unspecified |
| 7 | VCLK | Unspecified |
| 8 | VCC | Unspecified |
Parts like it
8
24LC16BH-I/SN
SOIC-8-40℃~+85℃ 1,000,000 cycles 16Kbit 2.5V~5.5V 200 Years 400kHz 5ms Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM24AA02E48-E/SN
SOIC-8-40℃~+125℃ 1,000,000 cycles 1.7V~5.5V 200 Years 2Kbit 400kHz 5ms Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROMM24C01-RMN6P
SO-8-40℃~+85℃ 1.8V~5.5V 1Kbit 200 Years 4,000,000 Cycles 400kHz 5ms I2C Power-down/Power-up protection circuit SO-8 EEPROM ROHSSTMicroelectronicsEEPROM24AA02E64-E/SN
SOIC-8-40℃~+125℃ 1,000,000 cycles 1.7V~5.5V 200 Years 2Kbit 400kHz 5ms Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM24AA52-I/SN
SOIC-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 200 Years 2Kbit 400kHz 5ms Hardware write protection function、Noise suppression function、Software write protection function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM24LC025-E/SN
SOIC-8-40℃~+125℃ 1,000,000 cycles 2.5V~5.5V 200 Years 2Kbit 400kHz 5ms I2C Noise suppression function SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM24LC08BH-E/SN
SOIC-8-40℃~+125℃ 1,000,000 cycles 2.5V~5.5V 200 Years 400kHz 5ms 8Kbit Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM24LC21A-I/SN
SOIC-8-40℃~+85℃ 1,000,000 cycles 10ms 1Kbit 2.5V~5.5V 200 Years 400kHz Hardware write protection function、Noise suppression function I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM
Questions
Is there a KiCad symbol and footprint for the 24LC21A/SN?
Yes. The symbol is EasyEDA_Cloud:CAT24C21WI-G and the footprint Package_SO:SO-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 24LC21A/SN?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the 24LC21A/SN datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the 24LC21A/SN?
JLCPCB lists it as part C1352010, with 9 in stock; the sellers' links on this page open their listings.
What can replace the 24LC21A/SN?
Parts like it in the library: the 24LC16BH-I/SN by Microchip Technology, the 24AA02E48-E/SN by Microchip Technology, the M24C01-RMN6P by STMicroelectronics and the 24AA02E64-E/SN by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.