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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RTC-7301SF:B0 ROHS | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - | |
| RX-4803LC:AA3 PURE SN | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - | |
| RX-8801SA: UA PURE SN | Epson | IC TRC CLK/CALENDAR | - | - | - | - | - | - | - | - | - | |
| PT7C4337ACSEX | Texas Instruments | RTC MODULE INTEGRATED 32.768K CR | - | - | - | - | - | - | - | - | - | |
| AM1805AQ | Ambiq Micro, Inc. | REAL-TIME CLOCK WITH POWER MANAG | - | - | Cut Tape (CT) | Surface Mount | - | - | - | - | - | |
| PT7C433833WE | Texas Instruments | I2C AND LOW POWER RTC | - | - | Tube | Surface Mount | - | - | - | - | - | |
| RX-4801SA:UB3 PURE SN | Epson | IC RTC CLK/CALENDAR SPI 14-SOP | - | -40°C ~ 85°C | Tape & Reel (TR) | Surface Mount | - | - | Clock/Calendar | 1.6 V ~ 5.5 V | - | |
| RTC-4574NB:B3 ROHS | Epson | IC RTC CLK/CALENDAR SER 22-SON | - | -40°C ~ 85°C | Tape & Reel (TR) | Surface Mount | - | - | Clock/Calendar | 1.6 V ~ 5.5 V | - | |
| DS1744W-120IND | Maxim Integrated | IC RTC CLK/CALENDAR PAR 28-EDIP | - | -40°C ~ 85°C | Tube | Through Hole | - | - | Clock/Calendar | 2.97 V ~ 3.63 V | - | |
| BQ4285S-SB2TR | N/A | IC RTC CLK/CALENDAR PAR 24-SOIC | - | 0°C ~ 70°C | Tape & Reel (TR) | Surface Mount | - | - | Clock/Calendar | 4.5 V ~ 5.5 V | - |
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.