MPN

Microchip, 4 kB Serial EEPROM, 250 ns 8-Pin PDIP Serial-Microwire

RS Stock No.:: 178-5273
Mfr. Part No.:: 93LC66B-I/P
Brand:: Microchip

Microchip, 4 kB Serial EEPROM, 250 ns 8-Pin PDIP Serial-Microwire

Subtotal (1 reel of 2000 units)*

£670.00

(exc. VAT)

£804.00

(inc. VAT)

FREE delivery for orders over £60.00

Temporarily out of stock

Shipping from 03 August 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Reel*
2000 +	£0.335	£670.00

*price indicative

RS Stock No.:: 178-5273
Mfr. Part No.:: 93LC66B-I/P
Brand:: Microchip

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Microchip
	Product Type	Serial EEPROM
	Memory Size	4kB
	Interface Type	Serial-Microwire
	Package Type	PDIP
	Mount Type	Through Hole
	Pin Count	8
	Maximum Clock Frequency	2MHz
	Minimum Supply Voltage	2.5V
	Number of Bits per Word	16
	Maximum Supply Voltage	5.5V
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	85°C
	Length	9.4mm
	Standards/Approvals	No
	Number of Words	256
	Automotive Standard	No
	Supply Current	2mA
	Data Retention	200year
	Maximum Random Access Time	250ns

	Select all
	Brand Microchip
	Product Type Serial EEPROM
	Memory Size 4kB
	Interface Type Serial-Microwire
	Package Type PDIP
	Mount Type Through Hole
	Pin Count 8
	Maximum Clock Frequency 2MHz
	Minimum Supply Voltage 2.5V
	Number of Bits per Word 16
	Maximum Supply Voltage 5.5V
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 85°C
	Length 9.4mm
	Standards/Approvals No
	Number of Words 256
	Automotive Standard No
	Supply Current 2mA
	Data Retention 200year
	Maximum Random Access Time 250ns

Datasheet

93AA66B/93C66B/93LC66B Microwire Serial EEPROM

Microchip’s 93AA66B/93C66B/93LC66B family of devices are 4 Kbit Microwire Serial EEPROMs available in a variety of package, temperature and power supply variants.

Features

16-bit x 256 Organisation

Self-Timed Erase/Write Cycles (including Auto-Erase)

Automatic Erase All (ERAL) Before Write All (WRAL)

Power-On/Off Data Protection Circuitry

Industry Standard 3-Wire Serial I/O

Device Status Signal (Ready/Busy)

Sequential Read Function

1,000,000 Erase/Write Cycles

Data Retention >200 Years

EEPROM Serial Access - Microchip

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