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Part Number and Description Special Functions Time Format
(hh = 1/100 sec)
Date Format Bus Type Op. Temp Range Supply Voltage (V) NV RAM (Bytes) Features Package
DS1340 2-Wire RTC with Trickle Charger - HH:MM:SS YY-MM-DD 2-Wire -40 to +85 1.8
3
3.3
5
- Square-Wave Output 8/MAX (SOP)
8/SO.150
DS1375 2-Wire Digital Input RTC with Alarm - HH:MM:SS YY-MM-DD 2-Wire - 1.8
2
3
3.3
5
- Time of Day Alarm 6/TDFN-EP
DS1374 2-Wire, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output Elapsed Time Counter
Watchdog Timekeeper
Binary Binary 2-Wire - 1.8
3
3.3
5
- Time of Day Alarm
Periodic Interrupt
Trickle Charger
10/MAX
DS1338 2-Wire RTC with 56-Byte NV RAM Standard HH:MM:SS YY-MM-DD 2-Wire -40 to +85 1.8
3
3.3
56 Square-Wave Output 8/MAX (SOP)
8/SO.150
DS1371 2-Wire 32-bit Binary Counter Watchdog RTC Elapsed Time Counter Binary Binary 2-Wire -40 to +85 2
3
3.3
5
- Time of Day Alarm
Periodic Interrupt
Trickle Charger
8/MAX (SOP)
DS1558 Watchdog Clock with NV RAM Control NV SRAM Control
Watchdog Timekeeper
HH:MM:SS YYYY-MM-DD Bytewide -40 to +85 3.3
5
- Time of Day Alarm
Periodic Interrupt
P Reset
Power Fail Output
48/TQFP-7x7
DS1339 Serial Real-Time Clock Standard HH:MM:SS YY-MM-DD 2-Wire -40 to +85 2
3
3.3
- Time of Day Alarm
Square-Wave Output
Trickle Charger
8/MAX (SOP)
DS1337 Serial Real-Time Clock Standard HH:MM:SS YY-MM-DD 2-Wire -40 to +85 2
3
3.3
5
- Time of Day Alarm
Square-Wave Output
8/MAX (SOP)
8/PDIP.300
8/SO.150
MAX6901 3-Wire Serial Real Time Clock in a SOT23 Standard HH:MM:SS YYYY-MM-DD 3-Wire -40 to +85 2
3
3.3
5
31 Time of Day Alarm
Square-Wave Output
8/TDFN-EP
MAX6902 SPI-Compatible Real Time Clock in a SOT23 Standard HH:MM:SS YYYY-MM-DD SPI -40 to +85 2
3
3.3
5
31 Time of Day Alarm 8/TDFN-EP
MAX6900 I2C-Compatible Real Time Clock in a SOT23 Standard HH:MM:SS YYYY-MM-DD 2-Wire -40 to +85 2
3
3.3
5
31 - 6/TDFN-EP
DS12885 Real Time Clock Standard HH:MM:SS YY-MM-DD Multiplexed 0 to +70 5 114 Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/PDIP.600
24/SO.300
28/PLCC
32/TQFP-7x7
DS1680 Portable System Controller with Touch-Screen Controller NV SRAM Control
Touch-Screen Contoller
Watchdog Timekeeper
HH:MM:SS YY-MM-DD 3-Wire 0 to +70 3.3
5
- Time of Day Alarm
Periodic Interrupt
P Reset
Power Fail Output
A to D Converter
44/QFP-10x10
DS1746 Y2KC Nonvolatile Timekeeping RAM - HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
128k Battery + Crystal
PowerCap Package
32/EDIP.740a
34/PwrCap
DS1744 Y2KC Nonvolatile Timekeeping RAM NV Timekeeping RAM HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
32k Battery + Crystal
PowerCap Package
28/EDIP.740a
34/PwrCap
DS1743 Y2KC Nonvolatile Timekeeping RAM - HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
8k Battery + Crystal
PowerCap Package
28/EDIP.740a
34/PwrCap
DS1742 Y2KC Nonvolatile Timekeeping RAM NV Timekeeping RAM HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
2k Battery + Crystal 24/EDIP.700
DS17287 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
2k Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/EDIP.740
DS17285 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
2k Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/PDIP.600
24/SO.300
28/TSOP
DS1693 3V/5V Serialized Real Time Clock with NV RAM Control NV SRAM Control HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
114 Battery + Crystal
VCC Active Counter
Power Cycle Counter
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
28/EDIP.740b
DS1691 3 V/5V Serialized Real Time Clock with NV RAM Control NV SRAM Control HH:MM:SS YYYY-MM-DD Multiplexed 0 to +70 3
5
114 VCC Active Counter
Power Cycle Counter
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
28/EDIP.740b
DS1689 3V/5V Serialized Real Time Clock with NV RAM Control NV SRAM Control HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
114 Battery + Crystal
VCC Active Counter
Power Cycle Counter
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
28/PDIP.600
28/SO.300
DS1688 3V/5V Serialized Real Time Clock with NV RAM Control NV SRAM Control HH:MM:SS YYYY-MM-DD Multiplexed 0 to +70 3
5
114 VCC Active Counter
Power Cycle Counter
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
28/PDIP.600
28/SO.330
DS1687 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
242 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/EDIP.700
DS1685 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
242 Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/PDIP.600
24/SO.300
24/TSSOP
28/PLCC
DS1682 Total Elapsed Time Recorder with Alarm Time/Temperature/Event Recorder Binary Binary 2-Wire -40 to +85 3
3.3
5
10 - 8/SO.150
DS1216C SmartWatch/RAM NV SRAM Control HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 8k Ext.
32k Ext.
Battery + Crystal 28/I-SKT
DS1678 Real Time Event Recorder Time/Temperature/Event Recorder HH:MM:SS YYYY-MM-DD 2-Wire -40 to +85
0 to +70
5 32 Time of Day Alarm 8/PDIP.300
8/SO.208
DS1677 Portable System Controller NV SRAM Control
Watchdog Timekeeper
HH:MM:SS YY-MM-DD 3-Wire 0 to +70 5 - Time of Day Alarm
Periodic Interrupt
P Reset
Power Fail Output
A to D Converter
20/TSSOP
DS1673 Portable System Controller NV SRAM Control
Watchdog Timekeeper
HH:MM:SS YY-MM-DD 3-Wire 0 to +70 3
5
- Time of Day Alarm
Periodic Interrupt
P Reset
Power Fail Output
A to D Converter
20/SO.300
20/TSSOP
DS1672 Low Voltage Serial Time Keeping Chip Elapsed Time Counter Binary Binary 2-Wire -40 to +85 2
3
3.3
- Trickle Charger 8/MAX (SOP)
8/PDIP.300
8/SO.150
DS1670 Portable System Controller NV SRAM Control
Watchdog Timekeeper
HH:MM:SS YY-MM-DD 3-Wire 0 to +70 3.3 - Time of Day Alarm
Periodic Interrupt
P Reset
Power Fail Output
A to D Converter
20/SO.300
20/TSSOP
DS1647 Nonvolatile Timekeeping RAM - HH:MM:SS YY-MM-DD Bytewide 0 to +70 5 512k PowerCap Package 32/EDIP.740d
34/PwrCap
DS1646 Nonvolatile Timekeeping RAM NV Timekeeping RAM HH:MM:SS YY-MM-DD Bytewide 0 to +70 5 128k Battery + Crystal
PowerCap Package
32/EDIP.740a
34/PwrCap
DS1644 Nonvolatile Timekeeping RAM - HH:MM:SS YY-MM-DD Bytewide 0 to +70 5 32k Battery + Crystal
PowerCap Package
28/EDIP.720a
34/PwrCap
DS1643 Nonvolatile Timekeeping RAM - HH:MM:SS YY-MM-DD Bytewide 0 to +70 5 8k Battery + Crystal
PowerCap Package
28/EDIP.740a
34/PwrCap
DS1642 Nonvolatile Timekeeping RAM - HH:MM:SS YY-MM-DD Bytewide 0 to +70 5 2k Battery + Crystal 24/EDIP.700
DS1616 Temperature and Three Input MUX'ed 8-bit Data Recorder Time/Temperature/Event Recorder HH:MM:SS YYYY-MM-DD 3-Wire -40 to +85 5 32 Battery + Crystal
Time of Day Alarm
Temperature Alarm
24/PDIP.600
24/SO.300
DS1615 Temperature Recorder Time/Temperature/Event Recorder HH:MM:SS YY-MM-DD 3-Wire -40 to +85
0 to +70
5 32 Time of Day Alarm
Temperature Alarm
16/PDIP.300
16/SOIC.300
DS1603 Elapsed Time Counter Module Elapsed Time Counter Binary Binary 3-Wire 0 to +70 5 - VCC Active Counter
Square-Wave Output
7/ESIP
DS1602 Elapsed Time Counter Elapsed Time Counter Binary Binary 3-Wire -40 to +85
0 to +70
5 - VCC Active Counter 8/PDIP.300
8/SO.208
DS1306 Serial Alarm Real Time Clock (RTC) Standard HH:MM:SS YY-MM-DD 3-Wire
SPI
-40 to +85
0 to +70
2
3
3.3
5
96 Time of Day Alarm
Periodic Interrupt
Square-Wave Output
Trickle Charger
16/PDIP.300
20/TSSOP
DS1557 4MEG NV Y2KC Timekeeping RAM Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
512k PowerCap Package
Time of Day Alarm
Periodic Interrupt
P Reset
34/PwrCap
DS1556 1MEG NV Y2KC Timekeeping RAM Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
128k Battery + Crystal
PowerCap Package
Time of Day Alarm
Periodic Interrupt
P Reset
32/EDIP.740a
34/PwrCap
DS1248 1024K NV SRAM with Phantom Clock - HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
-40 to +85
0 to +70
3.3
5
128k PowerCap Package 32/EDIP.740d
34/PwrCap
DS1553 64K NV Y2KC Timekeeping RAM Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
8k Battery + Crystal
PowerCap Package
Time of Day Alarm
Periodic Interrupt
P Reset
28/EDIP.740a
34/PwrCap
DS1543 64K NV Timekeeping RAM Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 5 8k Battery + Crystal
Time of Day Alarm
Periodic Interrupt
P Reset
28/EDIP.740a
DS1511 Y2KC Watchdog Real Time Clock Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
256 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
P Reset
Square-Wave Output
28/EDIP.720a
DS1501 Y2KC Watchdog Real Time Clock Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide -40 to +85
0 to +70
3.3
5
256 Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
P Reset
Square-Wave Output
28/PDIP.600
28/SOIC.330
28/TSOP
DS1500 Y2KC Watchdog RTC with NV Control NV SRAM Control
Watchdog Timekeeper
HH:MM:SS YYYY-MM-DD Bytewide -40 to +85
0 to +70
3.3
5
256 Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
P Reset
Square-Wave Output
32/PDIP.600
32/TSOP
DS1486 RAMified Watchdog Timekeeper Watchdog Timekeeper HH:MM:SS:hh YY-MM-DD Bytewide 0 to +70 5 128k Battery + Crystal
PowerCap Package
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
32/EDIP.740d
34/PwrCap
DS14287 Real Time Clock with NVRAM Control NV SRAM Control HH:MM:SS YY-MM-DD Multiplexed 0 to +70 5 114 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/EDIP.700
DS14285 Real Time Clock with NV RAM Control NV SRAM Control HH:MM:SS YY-MM-DD Multiplexed -40 to +85
0 to +70
5 114 Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/PDIP.600
24/SO.300
28/PLCC
DS1386 RAMified Watchdog Timekeeper Watchdog Timekeeper HH:MM:SS:hh YY-MM-DD Bytewide 0 to +70 5 8k
32k
Battery + Crystal
PowerCap Package
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
32/EDIP.740d
34/PwrCap
DS1384 Watchdog Timekeeping Controller NV SRAM Control
Watchdog Timekeeper
HH:MM:SS:hh YY-MM-DD Bytewide 0 to +70 5 50 Time of Day Alarm
Power Fail Output
Square-Wave Output
44/QFP-10x10
DS9034PCX Clip-On Cap for Power-Cap Devices - - - - -40 to +85 - - Battery + Crystal
PowerCap Package
PwrCapXtal
DS2404 EconoRAM Time Chip Elapsed Time Counter
Power-On Cycle Counter
Power-On Interval Timer
Binary Binary 1-Wire
3-Wire
-40 to +85 3
3.3
5
512 Time of Day Alarm
Periodic Interrupt
Square-Wave Output
Serial Number
16/PDIP.300
16/SOIC.300
16/SSOP
DS1216H SmartWatch/RAM ROM control HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 128k Ext.
512k Ext.
Battery + Crystal 32/I-SKT
DS1286 Watchdog Timekeeper Watchdog Timekeeper HH:MM:SS:hh YY-MM-DD Bytewide 0 to +70 5 50 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
28/EDIP.720a
DS1216F SmartWatch/ROM 64K ROM control HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 8k ROM Ext.
32k ROM Ext.
128k ROM Ext.
Battery + Crystal 32/I-SKT
DS1284 Watchdog Timekeeper Chip Watchdog Timekeeper HH:MM:SS:hh YY-MM-DD Bytewide 0 to +70 5 50 Time of Day Alarm
Periodic Interrupt
Square-Wave Output
28/PDIP.600
28/PLCC
DS1254 2M x 8 NV SRAM with Phantom Clock - HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 3.3
5
2M PowerCap Package 168/BGA-40x40
DS1315 Phantom Time Chip NV SRAM Control HH:MM:SS:hh YY-MM-DD Phantom 0 to +70 3.3
5
- - 16/PDIP.300
16/SOIC.300
20/TSSOP
DS1307 64 x 8 Serial Real Time Clock Standard HH:MM:SS YY-MM-DD 2-Wire -40 to +85
0 to +70
5 56 Square-Wave Output 8/PDIP.300
8/SO.150
DS1251 4096K NV SRAM with Phantom Clock - HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
-40 to +85
0 to +70
3.3
5
512k PowerCap Package 32/EDIP.740d
34/PwrCap
DS1216B SmartWatch/RAM NV SRAM Control HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 2k Ext.
8k Ext.
Battery + Crystal 28/I-SKT
DS1302 Trickle Charge Timekeeping Chip Standard HH:MM:SS YY-MM-DD 3-Wire -40 to +85
0 to +70
2
3
3.3
5
31 Trickle Charger 16/SOIC.300
8/PDIP.300
8/SO.150
8/SO.208
DS12C887A Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed 0 to +70 5 113 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/EDIP.700
DS12C887 Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed 0 to +70 5 113 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/EDIP.700
DS12887A Real Time Clock Standard HH:MM:SS YY-MM-DD Multiplexed 0 to +70 5 114 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/EDIP.700
DS12887 Real Time Clock Standard HH:MM:SS YY-MM-DD Multiplexed 0 to +70 5 114 Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Square-Wave Output
24/EDIP.700
DS17885 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
8k Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/PDIP.600
24/SO.300
28/TSOP
DS1554 256K NV Y2KC Timekeeping RAM Watchdog Timekeeper HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
32k Battery + Crystal
PowerCap Package
Time of Day Alarm
Periodic Interrupt
P Reset
32/EDIP.740a
34/PwrCap
DS1305 Serial Alarm Real Time Clock (RTC) Standard HH:MM:SS YY-MM-DD 3-Wire
SPI
-40 to +85
0 to +70
2
3
3.3
5
96 Time of Day Alarm
Periodic Interrupt
Power Fail Output
Trickle Charger
16/PDIP.300
20/TSSOP
DS3800 Advanced NV SRAM Battery Cap for DS1254 Clip-On Cap - - - - - - PowerCap Package -
DS1216E SmartWatch/ROM 64K ROM control HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 8k ROM Ext.
32k ROM Ext.
Battery + Crystal 28/I-SKT
DS2417 1-Wire Time Chip with Interrupt Standard Binary Binary 1-Wire -40 to +85 3
3.3
5
- Periodic Interrupt
Serial Number
6/TSOC
CSP2417
DS1244 256K NV SRAM with Phantom Clock - HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 3.3
5
32k PowerCap Package 28/EDIP.740b
34/PwrCap
DS1243 64K NV SRAM with Phantom Clock - HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 8k Battery + Crystal 28/EDIP.720b
DS17485 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
4k Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/PDIP.600
24/SO.300
28/TSOP
DS2415 1-Wire Time Chip Standard Binary Binary 1-Wire -40 to +85 3
3.3
5
- Serial Number 6/TSOC
CSP2415
DS17887 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
8k Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/EDIP.740
DS1216D SmartWatch/RAM NV SRAM Control HH:MM:SS:hh YY-MM-DD Bytewide
Phantom Clock
0 to +70 5 8k Ext.
32k Ext.
128k Ext.
Battery + Crystal 32/I-SKT
DS1747 Y2KC Nonvolatile Timekeeping RAM NV Timekeeping RAM HH:MM:SS YYYY-MM-DD Bytewide 0 to +70 3.3
5
512k Battery + Crystal
PowerCap Package
32/EDIP.740d
34/PwrCap
DS17487 3V/5V Real Time Clock Standard HH:MM:SS YYYY-MM-DD Multiplexed -40 to +85
0 to +70
3
5
4k Battery + Crystal
Time of Day Alarm
Periodic Interrupt
Wake-up
Kick-Start
RAM Clear Interrupt
Square-Wave Output
Serial Number
24/EDIP.740





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