Real Time Clocks
Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.
Product List
Total Components: 2,323
| Product | Pricing | Datasheet | Type | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply | Voltage - Supply, Battery | Current - Timekeeping (Max) | Operating Temperature | Mounting Type | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 DS1394U-33+T&R ADI (Analog Devices, Inc.) | 1 $13.8462 100 $11.0770 500 $9.2308 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 2.97V ~ 5.5V | 1.3V ~ 5.5V | 175µA @ 2.97V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-uMAX/uSOP | 600 Cart + RFQ |
DS1391U-33+T&R ADI (Analog Devices, Inc.) | 1 $4.0500 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 2.97V ~ 5.5V | 1.3V ~ 5.5V | 175µA @ 2.97V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-uMAX/uSOP | 7,680 Cart + RFQ |
 DS1307Z+T&R ADI (Analog Devices, Inc.) | 1 $0.7650 100 $0.6120 500 $0.5100 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 4.5V ~ 5.5V | 2V ~ 3.5V | 200µA @ 5V | 0°C ~ 70°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 100 Cart + RFQ |
 RV-3032-C7-32.768KHZ-2.5PPM-TA-QC Micro Crystal | 1 $4.4700 | Datasheet | Clock/Calendar | Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump | 16B, 32B | HH:MM:SS:100th (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.3V ~ 5.5V | - | 210nA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | 8-WCDFN | 8-SON (3.2x1.5) | 8,931 Cart + RFQ |
 RV-3149-C3-32.768KHZ-OPTION-B-TB-QA Micro Crystal | 1 $4.5300 | Datasheet | Clock/Calendar | Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger | 2B, 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.3V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C (TA) | Surface Mount | 10-VCDFN | 10-SON (3.7x2.5) | 7,673 Cart + RFQ |
DS1338Z-3+T&R ADI (Analog Devices, Inc.) | 1 $4.0500 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.7V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 3.3V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 1,574 Cart + RFQ |
 DS1339AU+T ADI (Analog Devices, Inc.) | 1 $4.3200 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.71V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 1.71V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-uMAX/uSOP | 1,849 Cart + RFQ |
 M41T82SM6F STMicroelectronics | 1 $10.7609 100 $8.6087 500 $7.1739 | Datasheet | Clock/Calendar | Alarm, Leap Year, SRAM, Watchdog Timer | 7B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 3V ~ 5.5V | 2V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 50,000 Cart + RFQ |
DS1308U-33+T ADI (Analog Devices, Inc.) | 1 $4.4000 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 3V ~ 5.5V | 1.3V ~ 5.5V | 125µA ~ 200µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-uMAX/uSOP | 2,085 Cart + RFQ |
 R2025S-E2-FE JRC (Nisshinbo Micro Devices) | 1 $4.8300 | Datasheet | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.7V ~ 5.5V | - | 120µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 7,847 Cart + RFQ |
DS1307ZN+T&R ADI (Analog Devices, Inc.) | 1 $0.6000 100 $0.4800 500 $0.4000 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 4.5V ~ 5.5V | 2V ~ 3.5V | 200µA @ 5V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 4,440 Cart + RFQ |
 ISL12026IBZ-T Intersil (Renesas Electronics Corporation) | 1 $4.4400 | Datasheet | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 9,362 Cart + RFQ |
RV-3032-C7-32.768KHZ 2.5PPM-TA-QA Micro Crystal | 1 $4.7000 | Datasheet | Clock/Calendar | Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump | 16B, 32B | HH:MM:SS:100th (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.3V ~ 5.5V | - | 210nA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | 8-WCDFN | 8-SON (3.2x1.5) | 3,868 Cart + RFQ |
 R2045S-E2-FE JRC (Nisshinbo Micro Devices) | 1 $5.1100 | Datasheet | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial, 4-Wire Serial | 1.7V ~ 5.5V | - | 1.8µA ~ 2µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.173", 4.40mm Width) Exposed Pad | 8-HSOP-E | 8,257 Cart + RFQ |
RV-3149-C3-32.768KHZ-OPTION-A-TB-QA Micro Crystal | 1 $5.4300 | Datasheet | Clock/Calendar | Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger | 2B, 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.3V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C (TA) | Surface Mount | 10-VCDFN | 10-SON (3.7x2.5) | 1,679 Cart + RFQ |
 DS2417P+ ADI (Analog Devices, Inc.) | 1 $2.9200 | Datasheet | Binary Counter | Unique ID | - | Binary | Binary | 1-Wire® Serial | 2.5V ~ 5.5V | - | 0.45µA @ 2.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 6-SMD, J-Lead | 6-TSOC | 9,626 Cart + RFQ |
DS1683S+T&R ADI (Analog Devices, Inc.) | 1 $5.3300 | Datasheet | Elapsed Time Counter | Alarm, EEPROM | 16B | Binary | Binary | I²C, 2-Wire Serial | 2.5V ~ 5.5V | - | - | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 6,093 Cart + RFQ |
 DS1344D-33+T&R ADI (Analog Devices, Inc.) | 1 $5.5600 | Datasheet | Clock/Calendar | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 3V ~ 5.5V | 1.3V ~ 5.5V | 120µA ~ 160µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 14-WFDFN Exposed Pad | 14-TDFN (3x3) | 9,586 Cart + RFQ |
 MAX31329ELB+ ADI (Analog Devices, Inc.) | 1 $3.4200 | Datasheet | Clock/Calendar | Alarm, Leap Year, RAM, Trickle Charger | 64B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C | 1.6V ~ 5.5V | 1.6V ~ 5.5V | 420nA ~ 610nA @ 1.6V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 10-LLGA | 10-LGA (5x5) | 1,653 Cart + RFQ |
 M41T94MQ6F STMicroelectronics | 1 $12.0000 | Datasheet | Clock/Calendar | Alarm, Leap Year, NVRAM, Square Wave Output, Watchdog Timer | 44B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | SPI | 2.7V ~ 5.5V | 2.5V ~ 3.5V | 1.4mA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 16-SOIC (0.154", 3.90mm Width) | 16-SO | 100,000 Cart + RFQ |