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021103

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

FEATURES

§ Factory programmed 48-bit node address

chip with 768 bits user-programmable OTP-

EPROM communicates with the economy of

one signal plus ground

§ Provides valid MAC-48/EUI-48

ETHERNET address

§ Unique, factory lasered and tested 64-bit

registration number assures absolute

traceability because no two parts are alike

§ Built-in multidrop controller ensures

§ Device is an “add-only” memory where

additional data can be programmed into

EPROM without disturbing existing data

§ Reduces control, address, data, power and

programming signals to a single pin

§ Directly connects to a single port pin of a

microprocessor and communicates at up to

16.3kbps

§ Presence detector acknowledges when reader

first applies voltage

§ Low cost TO-92 or TSOC surface mount

packages

§ Reads over a wide voltage range of 2.8V to

6.0V from -40°C to +85°C; programs at

11.5V to 12.0V from -40°C to + 50°C

PIN CONFIGURATION

TO-92

BOTTOM VIEW

TSOC PACKAGE

TOP VIEW

ORDERING INFORMATION

DS2502-E48

TO-92 package

DS2502P-E48

TSOC package

DS2502P-E48/T&R Tape-and-Reel version of

DS2502P-E48

GLOBAL IDENTIFIER DESCRIPTION

The DS2502-E48 is a variant of the DS2502 1024-bit add-only memory. It differs from the standard

DS2502 in its custom ROM family code 89H, and the UniqueWare Identifier 5E7H in place of the upper

12 bits of the standard ROM serialization field. Otherwise, the electrical and logical behavior is identical

to that of the DS2502. For technical details please refer to the DS2502 data sheet.

DS2502-E48

48-Bit Node Address Chip

www.maxim-ic.com

1-Wire is a registered trademark of Dallas Semiconductor.