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| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Type | Voltage - Supply | Shell Style |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PT7C43390WE | Texas Instruments | I2C AND LOWER POWER CONSUMPTION | - | - | - | - | - | - | - | - | - | |
| RX-8803SA:UC PURE SN | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - | |
| PT7C4372AWE | Texas Instruments | DIGITAL CLOCK PRECISION ADJUSTME | - | - | - | - | - | - | - | - | - | |
| RTC-72423B: PURE SN | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - | |
| RTC-63423B | Epson | IC RTC CLK/CALENDAR PAR 24-SOIC | - | -40°C ~ 85°C | Tube | Surface Mount | - | - | Clock/Calendar | 4.5 V ~ 5.5 V | - | |
| RX8900SA:UAB PURE SN | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - | |
| DS1602S+ | Maxim Integrated | IC RTC ELAPSED CNT SER 8-SOIC | - | -40°C ~ 85°C | Tube | Surface Mount | - | - | Elapsed Time Counter | 4.5 V ~ 5.5 V | - | |
| DS1672U-3+ | Maxim Integrated | IC RTC BINARY CNT I2C 8-USOP | - | -40°C ~ 85°C | Tube | Surface Mount | - | - | Binary Counter | 2.7 V ~ 3.3 V | - | |
| PT7C4563LEX | Texas Instruments | REAL-TIME CLOCK MODULE I2C BUS | - | - | - | - | - | - | - | - | - | |
| RTC-4574SA:B3 PURE SN | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - |
Real-time clocks (RTCs) are electronic devices that keep track of the current time and date with high accuracy, independent of external power sources. They typically include a built-in crystal oscillator and a battery backup to ensure continuous timekeeping even when the main power is off. RTCs are commonly used in applications such as consumer electronics, industrial automation, medical devices, and automotive systems where precise timekeeping is essential for scheduling tasks, logging events, and time-stamping data.