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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 DS1306E+T&R ADI (Analog Devices, Inc.) | 1 $6.1000 | Datasheet | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 5.5V | 25.3µA ~ 81µA @ 2V ~ 5V | 0°C ~ 70°C | Surface Mount | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP | 3,575 Cart + RFQ |
 RX-8564LC:B0 PURE SN Epson | 1 $6.6600 | Datasheet | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.65µA ~ 0.8µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | 12-TFSOJ (0.094", 2.40mm Width) | 12-VSOJ | 9,354 Cart + RFQ |
 DS1338C-33#T&R ADI (Analog Devices, Inc.) | 1 $25.8460 | 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 ~ 3.7V | 125µA ~ 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC | 100,000 Cart + RFQ |
DS1339C-33#T&R ADI (Analog Devices, Inc.) | 1 $6.7400 | 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 | 2.97V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 5.5V | -40°C ~ 85°C | Surface Mount | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC | 2,172 Cart + RFQ |
 AB-RTCMC-32.768KHZ-B5ZE-S3-T Abracon | 1 $7.4700 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.2V ~ 5.5V | 1.8V ~ 5.5V | 0.5µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | 10-SMD Module | Module | 3,722 Cart + RFQ |
 AB-RTCMC-32.768KHZ-AIGZ-S7-T Abracon | 1 $6.8000 | Datasheet | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1V ~ 4.4V | - | 0.4µA ~ 0.95µA @ 1V ~ 4.4V | -40°C ~ 85°C | Surface Mount | 8-WCDFN | 8-CLCC (3.2x1.5) | 2,092 Cart + RFQ |
 AB-RTCMC-32.768KHZ-IBO5-S3-T Abracon | 1 $6.4500 | Datasheet | Clock/Calendar | Alarm, Square Wave Output, SRAM, Trickle Charge, Watchdog Timer | 512B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.5V ~ 3.6V | 1.4V ~ 3.6V | 0.29µA ~ 0.33µA @ 1.8V ~ 3V | -40°C ~ 85°C | Surface Mount | Module | Module | 7,297 Cart + RFQ |
 DS1374U-18+ ADI (Analog Devices, Inc.) | 1 $4.6600 | Datasheet | Binary Counter | Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer | - | Binary | Binary | I²C, 2-Wire Serial | 1.71V ~ 1.89V | 1.3V ~ 3.7V | 100µA @ 1.71V ~ 1.89V | -40°C ~ 85°C | Surface Mount | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-uMAX/uSOP | 2,210 Cart + RFQ |
DS1391U-33+ ADI (Analog Devices, Inc.) | 1 $4.6600 | 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 | 6,159 Cart + RFQ |
 DS1338Z-3+ ADI (Analog Devices, Inc.) | 1 $4.6600 | 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 | 5,163 Cart + RFQ |
 DS1340U-18+ ADI (Analog Devices, Inc.) | 1 $4.6600 | Datasheet | Clock/Calendar | Leap Year, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.71V ~ 5.5V | 1.3V ~ 3.7V | 100µA @ 1.89V | -40°C ~ 85°C | Surface Mount | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-uMAX/uSOP | 6,341 Cart + RFQ |
DS1390U-33+ ADI (Analog Devices, Inc.) | 1 $4.7400 | 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 | 6,216 Cart + RFQ |
 DS1302+ ADI (Analog Devices, Inc.) | 1 $3.2571 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Trickle-Charger | 31B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2V ~ 5.5V | 2V ~ 5.5V | 0.3µA ~ 1µA @ 2V ~ 5V | 0°C ~ 70°C | Through Hole | 8-DIP (0.300", 7.62mm) | 8-PDIP | 100,000 Cart + RFQ |
DS1339U-3+ ADI (Analog Devices, Inc.) | 1 $4.9600 | 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 | 2.7V ~ 5.5V | 1.3V ~ 3.7V | 150µA @ 3.3V | -40°C ~ 85°C | Surface Mount | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-uMAX/uSOP | 8,643 Cart + RFQ |
DS1308U-33+ ADI (Analog Devices, Inc.) | 1 $5.0600 | 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 | 9,040 Cart + RFQ |
DS1338Z-18+ ADI (Analog Devices, Inc.) | 1 $4.6600 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.71V ~ 5.5V | 1.3V ~ 3.7V | 100µA @ 1.89V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 9,273 Cart + RFQ |
RX-8571LC:B3 PURE SN Epson | 1 $7.5700 | Datasheet | Clock/Calendar | Alarm, Leap Year, RAM | 16B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.6V ~ 5.5V | - | 0.55µA ~ 0.6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | 12-TFSOJ (0.094", 2.40mm Width) | 12-VSOJ | 9,243 Cart + RFQ |
 M41T94MH6F STMicroelectronics | 1 $13.0500 100 $10.4400 500 $8.7000 | 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 | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 417 Cart + RFQ |
DS1683S+ ADI (Analog Devices, Inc.) | 1 $5.8000 | 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 | 4,259 Cart + RFQ |
 DS1305+ ADI (Analog Devices, Inc.) | 1 $7.0000 | Datasheet | Clock/Calendar | Alarm, Leap Year, NVSRAM, Trickle-Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 5.5V | 25.3µA ~ 81µA @ 2V ~ 5V | 0°C ~ 70°C | Through Hole | 16-DIP (0.300", 7.62mm) | 16-PDIP | 4,103 Cart + RFQ |