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CAT25x SPI Serial EEPROMs

onsemi CAT25x SPI Serial EEPROMs feature a 64-byte or 128-byte page write buffer and support the Serial Peripheral Interface (SPI) protocol. These devices are enabled through a Chip Select (CS) input. In addition, the required bus signals are data input (SI), clock input (SCK), and data output (SO) lines. The onsemi CAT25x device's HOLD input may be used to pause any serial communication. These devices feature software and hardware write protection, including partial and full array protection. The on-chip ECC (Error Correction Code) makes the device suitable for high-reliability applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	Memory Size	Interface Type	Maximum Clock Frequency	Organization	Package / Case	Access Time	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Retention	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
EEPROM 128K SPI Serial CMOS EEPROM CAT25128YI-GT3 onsemi 1: $1.02 12,600In Stock	Mfr. Part # CAT25128YI-GT3 Mouser Part # 698-CAT25128YI-GT3	onsemi	EEPROM 128K SPI Serial CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	12,600In Stock	Cut Tape $1.02 $0.973 $0.955 $0.903 View Reel $0.708 $0.883 $0.857 $0.837 $0.734 $0.708 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	TSSOP-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25128	Reel, Cut Tape, MouseReel
EEPROM 512KB SPI SER CMOS EEPROM CAT25512HU5I-GT3 onsemi 1: $1.38 4,501In Stock	Mfr. Part # CAT25512HU5I-GT3 Mouser Part # 863-CAT25512HU5I-GT3	onsemi	EEPROM 512KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	4,501In Stock	Cut Tape $1.38 $1.36 $1.33 $1.18 View Reel $0.899 $1.16 $1.11 $1.09 $1.06 $0.899 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	512 kbit	3-Wire, SPI	20 MHz	64 k x 8	UDFN-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25512	Reel, Cut Tape, MouseReel
EEPROM 256K SPI Serial CMOS EEPROM CAT25256XI-T2 onsemi 1: $1.56 2,753In Stock	Mfr. Part # CAT25256XI-T2 Mouser Part # 698-CAT25256XI-T2	onsemi	EEPROM 256K SPI Serial CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	2,753In Stock	Cut Tape $1.56 $1.45 $1.38 $1.36 View Reel $1.02 $1.34 $1.30 $1.27 $1.11 $1.02 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	256 kbit	3-Wire, SPI	5 MHz	32 k x 8	SOIC-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25256	Reel, Cut Tape, MouseReel
EEPROM 256KB SPI SER CMOS EEPROM CAT25256XE-T2 onsemi 1: $4.85 1,953In Stock	Mfr. Part # CAT25256XE-T2 Mouser Part # 863-CAT25256XE-T2	onsemi	EEPROM 256KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	1,953In Stock	Cut Tape $4.85 $4.54 $4.39 $4.29 View Reel $3.76 $4.19 $4.06 $3.97 $3.87 $3.76 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	256 kbit	SPI	20 MHz	32 k x 8	SOIC-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	CAT25256	Reel, Cut Tape, MouseReel
EEPROM 512KB SPI SER CMOS EEPROM CAT25512HU5E-GT3 onsemi 1: $1.77 2,747In Stock	Mfr. Part # CAT25512HU5E-GT3 Mouser Part # 863-CAT25512HU5E-GT3	onsemi	EEPROM 512KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	2,747In Stock	Cut Tape $1.77 $1.66 $1.61 $1.58 View Reel $1.27 $1.54 $1.50 $1.47 $1.42 $1.27	Min.: 1 Mult.: 1 : 3,000	512 kbit	SPI	20 MHz	64 k x 8	UDFN-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	CAT25512	Reel, Cut Tape
EEPROM 512KB SPI SER CMOS EEPROM CAT25512XE-T2 onsemi 1: $3.69 1,382In Stock	Mfr. Part # CAT25512XE-T2 Mouser Part # 863-CAT25512XE-T2	onsemi	EEPROM 512KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	1,382In Stock	Cut Tape $3.69 $3.44 $3.34 $3.27 View Reel $2.87 $3.20 $3.10 $3.05 $2.97 $2.87	Min.: 1 Mult.: 1 : 2,000	512 kbit	SPI	20 MHz	64 k x 8	SOIC-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	CAT25512	Reel, Cut Tape
EEPROM 512KB SPI SER CMOS EEPROM CAT25512XI-T2 onsemi 1: $3.76 2,000In Stock	Mfr. Part # CAT25512XI-T2 Mouser Part # 863-CAT25512XI-T2	onsemi	EEPROM 512KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	2,000In Stock	Cut Tape $3.76 $3.51 $3.41 $3.33 View Reel $2.92 $3.25 $3.15 $3.11 $3.02 $2.92	Min.: 1 Mult.: 1 : 2,000	512 kbit	SPI	20 MHz	64 k x 8	SOIC-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 125 C	CAT25512	Reel, Cut Tape
EEPROM 512KB SPI SER CMOS EEPROM CAT25512VI-GT3 onsemi 1: $1.41 26,324In Stock	Mfr. Part # CAT25512VI-GT3 Mouser Part # 863-CAT25512VI-GT3	onsemi	EEPROM 512KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	26,324In Stock	Cut Tape $1.41 $1.35 $1.32 $1.22 View Reel $0.996 $1.19 $1.14 $1.10 $1.04 $0.996 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	512 kbit	3-Wire, SPI	20 MHz	64 k x 8	SOIC-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25512	Reel, Cut Tape, MouseReel
EEPROM 128K SPI Serial CMOS EEPROM CAT25128VI-GT3 onsemi 1: $1.04 5,640In Stock	Mfr. Part # CAT25128VI-GT3 Mouser Part # 698-CAT25128VI-GT3	onsemi	EEPROM 128K SPI Serial CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	5,640In Stock	Cut Tape $1.04 $0.992 $0.973 $0.901 View Reel $0.786 $0.884 $0.864 $0.844 $0.811 $0.786 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	SOIC-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25128	Reel, Cut Tape, MouseReel
EEPROM 256K SPI Serial CMOS EEPROM CAT25256YI-GT3 onsemi 1: $1.44 22,752In Stock	Mfr. Part # CAT25256YI-GT3 Mouser Part # 698-CAT25256YI-GT3	onsemi	EEPROM 256K SPI Serial CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	22,752In Stock	Cut Tape $1.44 $1.43 $1.41 $1.38 View Reel $1.11 $1.34 $1.31 $1.27 $1.11 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	256 kbit	3-Wire, SPI	20 MHz	32 k x 8	TSSOP-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25256	Reel, Cut Tape, MouseReel
EEPROM 256KB SPI SER CMOS EEPROM CAT25256HU4I-GT3 onsemi 1: $1.32 4,509In Stock	Mfr. Part # CAT25256HU4I-GT3 Mouser Part # 863-CAT25256HU4I-GT3	onsemi	EEPROM 256KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	4,509In Stock	Cut Tape $1.32 $1.23 $1.20 $1.17 View Reel $1.02 $1.14 $1.11 $1.08 $1.06 $1.02 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	256 kbit	3-Wire, SPI	10 MHz	32 k x 8	UDFN-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25256	Reel, Cut Tape, MouseReel
EEPROM 128K SPI Serial CAT25128VP2I-GT3 onsemi 1: $1.05 585In Stock 3,000Expected 2026-11-16	Mfr. Part # CAT25128VP2I-GT3 Mouser Part # 698-CAT25128VP2I-GT3	onsemi	EEPROM 128K SPI Serial Learn More about onsemi cat25x spi serial eeproms	Datasheet	585In Stock 3,000Expected 2026-11-16	Cut Tape $1.05 $0.988 $0.965 $0.946 View Reel $0.762 $0.929 $0.904 $0.887 $0.868 $0.762 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	TDFN-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25128	Reel, Cut Tape, MouseReel
EEPROM 256K SPI Serial CMOS EEPROM CAT25256VI-GT3 onsemi 1: $1.21 282In Stock 33,000On Order	Mfr. Part # CAT25256VI-GT3 Mouser Part # 698-CAT25256VI-GT3	onsemi	EEPROM 256K SPI Serial CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	282In Stock 33,000On Order On Order Ship Dates Mfr. #: CAT25256VI-GT3 Stock: 282 Can Ship Immediately On Order: 12,000 Expected 2027-06-04 21,000 Expected 2027-07-06 Factory Lead-Time: 35 Weeks	Cut Tape $1.21 $1.18 $1.15 $1.13 $1.10 Reel $0.901 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	256 kbit	3-Wire, SPI	5 MHz	32 k x 8	SOIC-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25256	Reel, Cut Tape, MouseReel
EEPROM 128KB SPI SER CMOS EEPROM CAT25128HU4I-GT3 onsemi 1: $1.18 1,156In Stock	Mfr. Part # CAT25128HU4I-GT3 Mouser Part # 863-CAT25128HU4I-GT3	onsemi	EEPROM 128KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	1,156In Stock	Cut Tape $1.18 $1.10 $1.07 $1.05 View Reel $0.765 $1.03 $0.996 $0.972 $0.949 $0.765 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	128 kbit	3-Wire, SPI	10 MHz	16 k x 8	UDFN-8		1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25128	Reel, Cut Tape, MouseReel
EEPROM 512KB SPI SER CMOS EEPROM CAT25512YI-GT3 onsemi 1: $1.41 260In Stock 18,000Expected 2027-03-26	Mfr. Part # CAT25512YI-GT3 Mouser Part # 863-CAT25512YI-GT3	onsemi	EEPROM 512KB SPI SER CMOS EEPROM Learn More about onsemi cat25x spi serial eeproms	Datasheet	260In Stock 18,000Expected 2027-03-26	Cut Tape $1.41 $1.31 $1.28 $1.25 View Reel $0.958 $1.22 $1.19 $1.16 $1.13 $0.958 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	512 kbit	3-Wire, SPI	20 MHz	64 k x 8	TSSOP-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25512	Reel, Cut Tape, MouseReel
EEPROM 128K SPI Serial CAT25128XI-T2 onsemi 1: $1.57 Lead-Time 31 Weeks	Mfr. Part # CAT25128XI-T2 Mouser Part # 698-CAT25128XI-T2	onsemi	EEPROM 128K SPI Serial Learn More about onsemi cat25x spi serial eeproms	Datasheet	Lead-Time 31 Weeks	Cut Tape $1.57 $1.47 $1.43 $1.40 View Reel $1.03 $1.37 $1.32 $1.28 $1.13 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	128 kbit	3-Wire, SPI	20 MHz	16 k x 8	SOIC-8	75 ns	1.8 V	5.5 V	SMD/SMT	100 Year	- 40 C	+ 85 C	CAT25128	Reel, Cut Tape, MouseReel

CAT25x SPI Serial EEPROMs

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CAT25x SPI Serial EEPROMs

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