93LC46B-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
93LC46B-I/ST is a 1 Kbit (128 × 8) serial EEPROM from Microchip with 2.5 V operation and 3-wire SPI interface. It supports up to 2 MHz clock frequency, 1,000,000 erase/write cycles, and over 200 years of data retention. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93LC46B-I/ST 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
Key Features
- 1 Kbit (128 × 8) organization with 2.5 V supply supporting low-power microcontroller systems
- Up to 1,000,000 erase/write cycle endurance with data retention exceeding 200 years for high-reliability storage
- Serial 3-wire interface up to 2 MHz clock frequency in a compact 8-pin TSSOP package
Applications
The 93LC46B-I/ST is widely used for storing calibration constants, configuration parameters, and small data records in battery-powered sensor nodes, smart meters, and industrial controllers. Its 2.5 V operation and low active current make it ideal for energy-harvesting IoT devices that need non-volatile memory with minimal standby power. It is also used in automotive modules and medical instruments requiring long data-retention lifetimes exceeding 200 years with 1,000,000 endurance cycles.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | 1000000 ERASE/WRITE CYCLES MIN; DATA RETENTION > 200 YEARS |
| Clock Frequency-Max (fCLK) | 2MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 1024bit |
| Memory IC Type | EEPROM |
| Memory Width | 16 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 64words |
| Number of Words Code | 64 |
| Operating Mode | SYNCHRONOUS |
| Organization | 64X16 |
| Output Characteristics | TOTEM POLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| 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) | 2.5V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Write Cycle Time-Max (tWC) | 6ms |
| Write Protection | SOFTWARE |
| ## 93LC46B-I/ST Alternates Showing results | Image |
| 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 | Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 93LC46B-I/ST:
suggested
suggested
suggested
Frequently Asked Questions
What storage capacity and organization does the 93LC46B-I/ST provide?
The 93LC46B-I/ST provides 1 Kbit of EEPROM organized as 128 bytes (128 × 8 bits), sufficient for storing calibration tables, device addresses, and configuration registers in embedded systems with minimal non-volatile memory requirements.
How many write cycles can the 93LC46B-I/ST endure, and what data retention is guaranteed?
Microchip specifies a minimum of 1,000,000 erase/write cycles and a data retention period exceeding 200 years for the 93LC46B-I/ST, making it highly reliable for industrial, automotive, and medical applications that require long operational lifetimes.
At what clock speed does the 93LC46B-I/ST communicate, and which interface does it use?
The 93LC46B-I/ST uses a 3-wire serial (Microwire-compatible) interface with a maximum clock frequency of 2 MHz, enabling straightforward integration with most 8-bit and 32-bit microcontrollers that include a hardware SPI or bit-banged serial port.
Would the 93LC46B-I/ST work in a 3.3 V microcontroller system without a level-shifter?
Yes, the 93LC46B-I/ST operates from 2.5 V to 5.5 V, so a standard 3.3 V microcontroller rail drives it directly without any level-shifting circuitry, provided the controller IO high-level output voltage exceeds 0.7 × VCC of the EEPROM.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2741 | $0.27 |
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