Real Time Clocks
| 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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X1227S8I-2.7T1IC RTC CLK/CALENDAR I2C 8SOIC |
0 |
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- |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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X1227S8I-2.7T2IC RTC CLK/CALENDAR I2C 8SOIC |
0 |
|
- |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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X1227S8IZ-2.7AT1IC RTC CLK/CALENDAR I2C 8SOIC |
0 |
|
- |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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X1228S14-2.7T1IC RTC CLK/CALENDAR I2C 14SOIC |
0 |
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Datasheet | - | 14-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 ~ 5V | 0°C ~ 70°C | Surface Mount | - | - | 14-SOIC |
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ISL12029IB27Z-TIC RTC CLK/CALENDAR I2C 14SOIC |
0 |
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Datasheet | - | 14-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 | - | - | 14-SOIC |
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ISL12028IV27Z-TIC RTC CLK/CALENDAR I2C 14TSSOP |
0 |
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Datasheet | - | 14-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 | - | - | 14-TSSOP |
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ISL12027IB27Z-TIC RTC CLK/CALENDAR I2C 8SOIC |
0 |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Watchdog Timer | - | 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 |
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ISL1221IUZIC RTC EVENT REC I2C 10MSOP |
3 |
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Datasheet | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Time Event Recorder | 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 | - | - | 10-MSOP |
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ISL12022MIBZ-T7AIC RTC CLK/CALENDAR I2C 20SOIC |
0 |
|
- |
- | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, SRAM | 128B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 14µA ~ 15µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-SOIC |
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M41ST85WMH6TRIC RTC CLK/CALENDAR I2C 28SOH |
0 |
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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, Supervisor, Watchdog Timer | 44B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 3.6V | 2.5V ~ 3.5V | 0.5mA @ 2.7V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 28-SOH |
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M48T86PC1IC RTC CLK/CALENDAR PAR 24-DIP |
0 |
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Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | 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 | Through Hole | - | - | 24-PCDIP, CAPHAT® |
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M41T56MH6FIC RTC CLK/CALENDAR I2C 28SOH |
0 |
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Datasheet | - | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 56B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 3.5V | 100µA (Typ) @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 28-SOH |
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BQ4802LYPWG4IC RTC CLK/CALENDAR PAR 28TSSOP |
0 |
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Datasheet | - | 28-TSSOP (0.173", 4.40mm Width) | Tube | Discontinued at Digi-Key | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.6V | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | 0°C ~ 70°C | Surface Mount | - | - | 28-TSSOP |
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ISL12022MIBZR5421IC RTC CLK/CALENDAR I2C 20SOIC |
0 |
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Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, SRAM | 128B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 14µA ~ 15µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-SOIC |
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M41ST87YMX6TRIC RTC CLOCK/CALENDAR I2C 28SO |
0 |
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Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | 128B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 5.5V | 1mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 28-SO |
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M41ST87YMX6IC RTC CLOCK/CALENDAR I2C 28SO |
0 |
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Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | 128B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 5.5V | 1mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 28-SO |
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M41ST87WMX6IC RTC CLOCK/CALENDAR I2C 28SO |
0 |
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Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | 128B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 3.6V | 2.5V ~ 3.6V | 0.5mA @ 2.7V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 28-SO |
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BQ4802YDWRG4IC RTC CLK/CALENDAR PAR 28SOIC |
0 |
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Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Discontinued at Digi-Key | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOIC |
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M41T56C64MY6FIC RTC CLK/CALENDAR I2C 18SOX |
0 |
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Datasheet | - | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | EEPROM, Leap Year, NVSRAM | 56B, 8KB | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 3.5V | 100µA (Typ) @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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BQ4802LYDSHIC RTC CLK/CALENDAR PAR 28SOP |
0 |
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Datasheet | - | 28-SOIC (0.345", 8.77mm Width) with SNAPHAT Sockets | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.6V | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOP |