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Manufacturer Part #


CAT93C Series 4 kb (256X16) 2 MHz 1.8 to 5.5 V Microwire Serial EEPROM - SOIC-8

Product Specification Section
Technical Attributes
Attributes Table
Memory Density: 4kb
Memory Organization: 512 x 8 / 256 x 16
Supply Voltage-Nom: 1.8V to 5.5V
Clock Frequency-Max: 2MHz
Write Cycle Time-Max (tWC): 1ms
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications

The CAT93C66 is a 4-Kb CMOS Serial EEPROM device which is organized as either 256 registers of 16 bits (ORG pin at VCC) or 512 registers of 8 bits (ORG pin at GND). Each register can be written (or read) serially by using the DI (or DO) pin. The CAT93C66 features sequential read and self-timed internal write with auto-clear. On-chip Power-On Reset circuitry protects the internal logic against powering up in the wrong state.

Key Features:

  • High speed operation: 2MHz
  • 1.8V to 5.5V supply voltage range
  • Selectable x8 or x16 memory organization
  • Sequential read
  • Software write protection
  • Power-up inadvertant write protection
  • Low power CMOS technology
  • 1,000,000 Program/erase cycles
  • 100 year data retention
  • Industrial and Extended temperature ranges
  • RoHS-compliant 8-pin PDIP, SOIC, TSSOP and 8-pad TDFN packages


  • Automotive Systems
  • Communications Systems
  • Computer Systems
  • Consumer Systems
  • Industrial Systems
Pricing Section
Web Price:
$0.205 USD Each
Cost Per Unit

$7.00 reeling fee is amortized over the number of components for each reel.
Mini-Reels are a custom product and are non-cancelable and non-returnable.