93LC66B-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 93LC66B-I/SN is a 4K-bit (256x16) 3-wire serial EEPROM from Microchip with 1 MHz clock speed and 1,000,000 write/erase cycle endurance. It is available in an industry-standard SOIC-8 surface-mount package with RoHS-compliant lead-free construction. In stock with competitive pricing and worldwide shipping for embedded storage applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93LC66B-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2741(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 93LC66B-I/SN?
- 4K-bit (256×16) EEPROM density with 16-bit word organization enabling efficient 16-bit data storage and retrieval
- 3-wire Microwire-compatible serial interface for simple integration with a wide range of microcontrollers and SoCs
- 1,000,000 write/erase cycle endurance with greater than 200 years of data retention for long-life non-volatile storage
- RoHS-compliant SOIC-8 package with 1 MHz maximum clock frequency and wide operating voltage support
What is 93LC66B-I/SN used for?
The 93LC66B-I/SN is widely deployed in consumer electronics, home appliances, automotive accessories, and industrial control systems for storing user configuration data, calibration parameters, and small non-volatile datasets. Its 3-wire serial interface minimizes GPIO usage on host microcontrollers while its SOIC-8 package enables straightforward PCB integration with standard SMT processes. The device is also commonly used in printer cartridges, set-top boxes, and IoT sensor modules requiring reliable, low-power data retention.
What are the specifications of 93LC66B-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | 1000000 ERASE/WRITE CYCLES MIN; DATA RETENTION > 200 YEARS |
| Clock Frequency-Max (fCLK) | 1MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 4096bit |
| Memory IC Type | EEPROM |
| Memory Width | 16 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 256words |
| Number of Words Code | 256 |
| Operating Mode | SYNCHRONOUS |
| Organization | 256X16 |
| Output Characteristics | TOTEM POLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Ready/Busy | YES |
| Reverse Pinout | NO |
| Screening Level | TS 16949 |
| Serial Bus Type | MICROWIRE |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.002mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.8V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Toggle Bit | YES |
| Write Cycle Time-Max (tWC) | 6ms |
| Write Protection | SOFTWARE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Where can I find the 93LC66B-I/SN datasheet?
93LC66B-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 93LC66B-I/SN?
Compatible alternatives and drop-in replacements for 93LC66B-I/SN:
Frequently Asked Questions
What is the memory organization of the 93LC66B-I/SN?
The 93LC66B-I/SN is organized as 256 words of 16 bits each, providing a total storage capacity of 4K bits. The 16-bit word width (B-variant) makes it particularly well-suited for systems working natively with 16-bit data, reducing the number of read/write operations compared to 8-bit organized EEPROMs.
What serial interface does the 93LC66B-I/SN use?
The 93LC66B-I/SN uses a 3-wire Microwire-compatible serial interface consisting of chip select (CS), clock (SK), and data in/out (DI/DO) signals. Operating at up to 1 MHz, this interface is supported by virtually all general-purpose microcontrollers and provides simple, reliable communication with minimal pin count.
How durable is the 93LC66B-I/SN in terms of write cycles and data retention?
The 93LC66B-I/SN is rated for a minimum of 1,000,000 write/erase cycles per location and more than 200 years of data retention. These ratings exceed the requirements of most embedded applications, ensuring reliable non-volatile storage throughout the product lifetime even in applications with frequent data updates.
What package is the 93LC66B-I/SN supplied in and is it RoHS compliant?
The 93LC66B-I/SN is supplied in an SOIC-8 (Small Outline Integrated Circuit, 8-pin) surface-mount package, compliant with JEDEC standard JESD-30 code R-PDSO-G8. The device carries a Pb-free (JESD-609 e3) designation, confirming RoHS compliance for use in lead-free manufacturing environments.
What are common applications for the 93LC66B-I/SN?
The 93LC66B-I/SN is commonly used in consumer electronics, automotive systems, industrial controllers, and office equipment for storing configuration registers, calibration data, and small user datasets. Its standard Microwire interface and SOIC-8 form factor make it a drop-in replacement in many existing designs and a popular choice for new embedded storage requirements.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2741 | $0.27 |
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