Real Time Clocks
Browse available Real Time Clocks components by manufacturer and part number. Review stock status, datasheets and key technical parameters to compare suitable options for design, maintenance, replacement or purchasing.
If you already have a target MPN or BOM, send it to EGOO with the required quantity. Our sourcing team can check availability, lead time and quotation options, including hard-to-find and obsolete parts.
| Photo | Mfr. Part # | Availability | Price | 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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DS1340U-18IC RTC CLOCK/CALENDAR I2C 8UMAX |
3,266 | - |
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Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | 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-uMAX/uSOP |
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DS1340U-3IC RTC CLOCK/CALENDAR I2C 8UMAX |
4,043 | - |
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Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.3V ~ 3.7V | 125µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
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DS1340Z-18IC RTC CLK/CALENDAR I2C 8SOIC |
1,415 | - |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | 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-SOIC |
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DS1340Z-3IC RTC CLK/CALENDAR I2C 8SOIC |
1,946 | - |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.3V ~ 3.7V | 125µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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PCF8563P/F4,112IC RTC CLOCK/CALENDAR I2C 8DIP |
4,485 | - |
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Datasheet | - | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Through Hole | - | - | 8-DIP |
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PCF8583P/F5,112IC RTC CLOCK/CALENDAR I2C 8DIP |
3,590 | - |
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Datasheet | - | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output | 240B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD | I2C, 2-Wire Serial | 2.5V ~ 6V | - | 10µA ~ 50µA @ 1V ~ 5V | -40°C ~ 85°C | Through Hole | - | - | 8-DIP |
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PCF8563T/F4,112IC RTC CLOCK/CALENDAR I2C 8SO |
3,494 | - |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Discontinued at Digi-Key | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SO |
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PCF8593T/1,112IC RTC CLOCK/CALENDAR I2C 8SO |
1,703 | - |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Discontinued at Digi-Key | Not Verified | Clock/Calendar | Alarm, NVSRAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.5V ~ 6V | - | 8µA ~ 15µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SO |
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M48T86MH1FIC RTC CLK/CALENDAR PAR 28SOH |
1,030 | - |
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Datasheet | - | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 15mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOH |
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ISL1208IU8IC RTC CLK/CALENDAR I2C 8MSOP |
3,044 | - |
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Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, SRAM | 2B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
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DS1742W-150+IC RTC CLK/CALENDAR PAR 24EDIP |
3,130 | - |
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Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 2KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 2mA @ 3.3V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
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DS1743-100+IC RTC CLK/CALENDAR PAR 28EDIP |
1,520 | - |
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Datasheet | - | 28-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 8KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 3mA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 28-EDIP |
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DS1743P-100+IC RTC CLK/CALENDAR PAR 34PCM |
1,210 | - |
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Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 8KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 3mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
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DS14287+IC RTC CLK/CALENDAR PAR 24EDIP |
4,492 | - |
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Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.6V | 0.5µA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
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DS1501WE+IC RTC CLK/CALENDAR PAR 28TSOP |
1,830 | - |
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Datasheet | - | 28-TSSOP (0.465", 11.80mm Width) | Tray | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K | 256B | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | 2.5V ~ 3.7V | 4mA @ 3V ~ 3.6V | 0°C ~ 70°C | Surface Mount | - | - | 28-TSOP |
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DS1642-100+IC RTC CLK/CALENDAR PAR 24EDIP |
2,672 | - |
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Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 2KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 3mA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
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DS1643-100+IC RTC CLK/CALENDAR PAR 28EDIP |
2,872 | - |
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Datasheet | - | 28-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 8KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 3mA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 28-EDIP |
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DS1644P-120+IC RTC CLK/CALENDAR PAR 34PCM |
1,345 | - |
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Datasheet | - | 34-PowerCap™ Module | Tray | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 32KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 4mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
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DS1646-120+IC RTC CLK/CALENDAR PAR 32EDIP |
1,111 | - |
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Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 4mA @ 4.5 V ~ 5.5 V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
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DS1646P-120+IC RTC CLK/CALENDAR PAR 34PCM |
4,518 | - |
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Datasheet | - | 34-PowerCap™ Module | Tray | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 4mA @ 4.5 V ~ 5.5 V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
Real Time Clocks FAQ
What Real Time Clocks components can I source from EGOO?
You can browse available Real Time Clocks product families, manufacturers and part numbers on this page, then review stock, datasheets and technical information for suitable options.
Can EGOO help with hard-to-source or obsolete Real Time Clocks parts?
Yes. EGOO provides sourcing support for shortage, obsolete and hard-to-find electronic components. Send us the target manufacturer part number and quantity for checking.
Does EGOO support BOM and small-batch sourcing?
Yes. We support BOM sourcing, prototype requirements and small-batch supply, together with stock, lead-time and quotation assistance.
How do I request pricing and availability?
Submit the manufacturer part number, required quantity and any package, date-code or delivery requirements through the RFQ form, and our team will review available sourcing options.
