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DESCRIPTION

The Microchip Technology Inc. 24LC174 is a cascadable 16K bit Electrically Erasable PROM. The device is organized as eight blocks of 256 x 8-bit memory with a 2-wire serial interface and provides a specially addressed OTP (one-time programmable) 16 byte security block. Low voltage design permits operation down to 2.5 volts with standby and active currents of only 5 μA and 1 mA respectively. The 24LC174 also has a page-write capability for up to 16 bytes of data. The 24LC174 is available in the standard 8-pin DIP and 8-lead surface mount SOIC packages.

The three select pins, A0, A1, and A2, function as chip select inputs and allow up to eight devices to share a common bus, for up to 128K bits total system EEPROM.

FEATURES

? Single supply with operation down to 2.5V

? 16 bytes OTP Secure Memory

? Low power CMOS technology

- 1 mA active current typical

- 10 μA standby current typical at 5.5V

- 5 μA standby current typical at 3.0V

? Organized as eight blocks of 256 bytes (8 x 256 x 8)

? 2-wire serial interface bus, I2C? compatible

? Functional address inputs for cascading up to 8

devices

? Schmitt trigger, filtered inputs for noise suppression

? Output slope control to eliminate ground bounce

? 100 kHz (2.5V) and 400 kHz (5V) compatibility

? Self-timed write cycle (including auto-erase)

? Page-write buffer for up to 16 bytes

? 2 ms typical write cycle time for page-write

? Hardware write protect for entire memory

? Can be operated as a serial ROM

? Factory programming (QTP) available

? ESD protection > 4,000V

? 1,000,000 Erase/Write cycles guaranteed

? Data retention > 200 years

? 8-pin DIP, 8-lead SOIC packages

? Available temperature ranges:

- Commercial (C): 0°C to +70°C

- Industrial (I): -40° to +85°