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.
Browse Real Time Clocks by MPN. We highlight stock availability, support BOM matching, and source through original / verified channels.
Product List
Total Components: 2,323
| Product | Pricing | Datasheet | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply, Battery | Current - Timekeeping (Max) | Type | Mounting Type | Operating Temperature | Voltage - Supply | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 DS1344D-33+ ADI (Analog Devices, Inc.) | 1 $2.5100 | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.3V ~ 5.5V | 120µA ~ 160µA @ 3.63V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 3V ~ 5.5V | 14-WFDFN Exposed Pad | 14-TDFN (3x3) | 9,620 | |
 RX8900SA:UBB PURE SN Epson | 1 $4.7170 | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.5V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 2,290 | |
RX8900SA:UCB PURE SN Epson | 1 $4.7170 | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.5V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 8,588 | |
 DS1615 ADI (Analog Devices, Inc.) | Alarm, Leap Year, Unique ID, Y2K | 32B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.7V ~ 4.95V | 0.5µA @ 5V | Temperature Recorder | Through Hole | -40°C ~ 85°C | 4V ~ 5.5V | 16-DIP (0.300", 7.62mm) | 16-PDIP | 4,399 | ||
 DS1615S ADI (Analog Devices, Inc.) | Alarm, Leap Year, Unique ID, Y2K | 32B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.7V ~ 4.95V | 0.5µA @ 5V | Temperature Recorder | Surface Mount | -40°C ~ 85°C | 4V ~ 5.5V | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC | 5,349 | ||
 DS17485E-5 ADI (Analog Devices, Inc.) | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 4KB | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.5V ~ 3.7V | 3mA @ 4.5V ~ 5.5V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 28-TSSOP (0.465", 11.80mm Width) | 28-TSOP | 3,549 | ||
 M41T11M6E STMicroelectronics | Leap Year, NVSRAM | 56B | HH:MM:SS | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 70µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 9,892 | ||
 M41T11MH6E STMicroelectronics | Leap Year, NVSRAM | 56B | HH:MM:SS | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 70µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 1,408 | ||
 X1228V14I-2.7A Intersil (Renesas Electronics Corporation) | Alarm, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.7V ~ 5.5V | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP | 6,455 | ||
X1228V14I-4.5A Intersil (Renesas Electronics Corporation) | Alarm, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.7V ~ 5.5V | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP | 2,800 | ||
 DS1558Y+ ADI (Analog Devices, Inc.) | 1 $11.4900 | Alarm, Leap Year, Watchdog Timer, Y2K | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.5V ~ 3.7V | 6mA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 4.5V ~ 5.5V | 48-LQFP | 48-LQFP (7x7) | 1,360 | |
 DS1673E-3+ ADI (Analog Devices, Inc.) | 1 $11.6600 | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.5V ~ 3.7V | 100µA @ 3V | Portable System Controller | Surface Mount | 0°C ~ 70°C | 2.7V ~ 3.3V | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP | 3,846 | |
 1337GDVGI Intersil (Renesas Electronics Corporation) | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 0.6µA @ 1.3V ~ 1.8V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.8V ~ 5.5V | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-MSOP | 4,938 | ||
1337GDVGI8 Intersil (Renesas Electronics Corporation) | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 0.6µA @ 1.3V ~ 1.8V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.8V ~ 5.5V | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-MSOP | 4,706 | ||
ISL12082IB8Z Intersil (Renesas Electronics Corporation) | 1 $3.6000 | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.7V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 2,981 | |
 ISL1208IRT8Z Intersil (Renesas Electronics Corporation) | 1 $3.6800 | Alarm, Leap Year, SRAM | 2B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.7V ~ 5.5V | 8-WDFN Exposed Pad | 8-TDFN (3x3) | 7,850 | |
 R2043T-E2-F JRC (Nisshinbo Micro Devices) | 1 $1.5900 | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 4-Wire Serial | - | 1µA @ 3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.7V ~ 5.5V | 10-VFSOP, 10-MSOP (0.110", 2.80mm Width) | 10-TSSOPG | 6,648 | |
BQ32000DR Texas Instruments | 1 $69.2250 100 $55.3800 500 $46.1500 | Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.4V ~ 3.6V | 100µA @ 3.3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 3V ~ 3.6V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 1,000 | |
 R2061L03-E2 JRC (Nisshinbo Micro Devices) | 1 $0.8250 | - | - | - | - | - | - | - | - | Surface Mount | - | - | 16-XFQFN Exposed Pad | QFN023023-16 | 4,732 | |
R2062L01-E2 JRC (Nisshinbo Micro Devices) | 1 $0.8250 | - | - | - | - | - | - | - | - | - | - | - | - | - | 7,976 |