19-4895; Rev 8/09 DS1995 16Kb Memory iButton SPECIAL FEATURES 16384 bits of read/write nonvolatile memory 256-bit scratchpad ensures integrity of data transfer Overdrive mode boosts communication to 142 kbits per second Memory partitioned into 256-bit pages for packetizing data Data integrity assured with strict read/write protocols Operating temperature range from -40C to +70C Over 10 years of data retention Presence detector acknowledges when reader first applies voltage F5 MICROCAN 5.89 0.51 16.25 D0 0A 000000FBC52B 17.35 1-Wire 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 traceability 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 16.3 kbits per second Standard 16 mm 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 DATA GROUND All dimensions are shown in millimeters. ORDERING INFORMATION PINPACKAGE DS1995L-F5+ F5 MicroCan -40C to +70C +Denotes a lead(Pb)-free/RoHS-compliant package. PART TEMP RANGE EXAMPLES OF ACCESSORIES DS9096P DS9101 DS9093RA DS9093F DS9092 Self-Stick Adhesive Pad Multi-Purpose Clip Mounting Lock Ring Snap-In Fob iButton Probe iButton DESCRIPTION The DS1995 Memory iButton operates nearly identically to the DS1996. The main differences are: 16 Kbits of memory organized as 64 pages of 32 bytes and a family code of 0A hexadecimal. For further details, refer to the DS1996 data sheet. iButton and 1-Wire are registered trademarks of Maxim Integrated Products, Inc. 1 of 2 DS1995 REVISION HISTORY REVISION DATE 070808 8/09 DESCRIPTION Updated the Ordering Information table to only show the lead-free version (DS1995-F5+). Updated the F5 MicroCan marking to match PCN H020201. Removed the UL#913 bullet from the Common iButton Features section. PAGES CHANGED 1 1 1 2 of 2 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.