Real Time Clocks
Explore Real Time Clocks parts from multiple manufacturers, with model information, availability, datasheets and technical specifications for engineering and purchasing.
For parts that are not shown in the list, send the manufacturer part number, quantity or BOM to JIEXIN Electronics. Our team can assist with availability checks and quotation support.
| Photo | Mfr. Part # | Availability | Quantity | Datasheet | Series | Package/Case | Packaging | Product Status | Programmable | Type | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply | Voltage - Supply, Battery | Current - Timekeeping (Max) | Operating Temperature | Mounting Type | Grade | Qualification | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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RTC-8564JE:B3:ROHSIC RTC CLK/CALENDAR I2C 20VSOJ |
5,504 |
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Datasheet | RTC-8564JE | 20-LSSOJ (0.213", 5.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Y2K | - | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.7µA ~ 0.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-VSOJ |
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DS3231MZ+TRLIC RTC CLK/CALENDAR I2C 8SOIC |
2,253 |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 130µA ~ 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS3232MZ+TRLIC RTC CLK/CALENDAR I2C 8SOIC |
18,150 |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM | 236B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 4.5V | 2.3V ~ 4.5V | 175µA @ 2.3V ~ 4.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS1339C-33#IC RTC CLK/CALENDAR I2C 16SOIC |
995 |
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Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | 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 |
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DS3231M+TRLIC RTC CLK/CALENDAR I2C 16SOIC |
1,768 |
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Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 130µA ~ 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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DS1685S-5+IC RTC CLK/CALENDAR PAR 24SOIC |
521 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 3mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 24-SOIC |
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DS3231S#T&RIC RTC CLK/CALENDAR I2C 16SOIC |
457 |
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Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, TCXO/Crystal | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 110µA ~ 170µA @ 3.63V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 16-SOIC |
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DS3234S#T&RIC RTC CLK/CALENDAR SPI 20SOIC |
1,586 |
|
Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal | 256B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 3.8V | 120µA ~ 160µA @ 3.63V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 20-SOIC |
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DS3231MZ+IC RTC CLK/CALENDAR I2C 8SOIC |
1,274 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 130µA ~ 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS3232MZ+IC RTC CLK/CALENDAR I2C 8SOIC |
1,329 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM | 236B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 4.5V | 2.3V ~ 4.5V | 175µA @ 2.3V ~ 4.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS3231M+IC RTC CLK/CALENDAR I2C 16SOIC |
237 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 130µA ~ 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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DS3232SN#T&RIC RTC CLK/CALENDAR I2C 20SOIC |
2,762 |
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Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal | 236B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 120µA ~ 160µA @ 3.3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 20-SOIC |
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DS3234SN#T&RIC RTC CLK/CALENDAR SPI 20SOIC |
2,411 |
|
Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal | 256B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 3.8V | 120µA ~ 160µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 20-SOIC |
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RX-8564LC:B3 PURE SNIC RTC CLK/CALENDAR I2C 12VSOJ |
8,876 |
|
Datasheet | RX-8564LC | 12-TFSOJ (0.094", 2.40mm Width) | Tape & Reel (TR) | Active | Not Verified | 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-VSOJ |
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DS3231S#IC RTC CLK/CALENDAR I2C 16SOIC |
481 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, TCXO/Crystal | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 110µA ~ 170µA @ 3.63V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 16-SOIC |
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DS3232SN#IC RTC CLK/CALENDAR I2C 20SOIC |
2,555 |
|
Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal | 236B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 120µA ~ 160µA @ 3.3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 20-SOIC |
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DS3234SN#IC RTC CLK/CALENDAR SPI 20SOIC |
314 |
|
Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal | 256B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 3.8V | 120µA ~ 160µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 20-SOIC |
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M48T58Y-70MH1FIC RTC CLK/CALENDAR PAR 28SOH |
1,799 |
|
Datasheet | Timekeeper® | 28-SOIC (0.337", 8.56mm Width) with SNAPHAT Sockets | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 3mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOH |
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DS3231SN#IC RTC CLK/CALENDAR I2C 16SOIC |
3,247 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, TCXO/Crystal | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 110µA ~ 170µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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DS12C887+IC RTC CLK/CALENDAR PAR 24EDIP |
744 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 113B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 15mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
Frequently Asked Questions
What are Real Time Clocks components used for?
Real Time Clocks components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.
How do I choose the right Real Time Clocks part?
Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.
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