Datasheet

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SPECIAL FEATURES
 4096 bits Electrically Erasable Programmable
Read Only Memory (EEPROM)
 Overdrive mode boosts communication speed
to 142kbps
 256-bit scratchpad ensures integrity of data
transfer
 Memory partitioned into 256-bit pages for
packetizing data
 Reduces control, address, data and power to a
single data pin
 8-bit family code specifies DS1973
communication requirements to reader
 Reads and writes over a wide voltage range of
2.8V to 6.0V from -40°C to +85°C
F3 MicroCan
F5 MicroCan
COMMON iButton FEATURES
 Unique, factory-lasered and tested 64-bit
registration number (8-bit family code +
48-bit serial number + 8-bit CRC tester)
assures absolute identity because no two
parts are alike
 Multidrop controller for MicroLAN
 Digital identification and information by
momentary contact
 Chip-based data carrier compactly stores
information
 Data can be accessed while affixed to object
 Economically communicates to bus master
with a single digital signal at 16.3kbps
 Standard 16mm diameter and 1-Wire
®
protocol ensure compatibility with iButton
®
family
 Button shape is self-aligning with cup-
shaped probes
 Durable stainless steel case engraved with
registration number withstands harsh
environments
 Easily affixed with self-stick adhesive
backing, latched by its flange, or locked with
a ring pressed onto its rim
 Presence detector acknowledges when reader
first applies voltage
ORDERING INFORMATION
PART PIN-PACKAGE
DS1973-F3+ F3 MicroCan
DS1973-F5+ F5 MicroCan
+Denotes a lead(Pb)-free/RoHS-compliant package.
EXAMPLES OF ACCESSORIES
DS9096P Self-Stick Adhesive Pad
DS9101 Multi-Purpose Clip
DS9093RA Mounting Lock Ring
DS9093A Snap-In Fob
DS9092 i
Button Probe
iButton and 1-Wire are registered trademarks of Maxim Integrated Products, Inc.
19-4889; Rev 8/09
DS1973
4Kb EEPROM i
Button