Echtzeituhrenschaltkreise (RTC) funktionieren wie eine "normale" Uhr. Sie zählen die Uhrzeit und haben meist zusätzlich Kalenderfunktionen. Durch den minimalen Stromverbrauch können sie optimal aus Batterien oder Akkus versorgt werden, auch wenn der Rest des Systems abgeschaltet ist. Ihr Haupteinsatzgebiet sind Controller-Anwendungen.
| Bestellcode | Beschreibung | EUR/Stück bei 1 Stück |
| DS1244Y-70+ | RTC Par. 8Bit 32KB NV SRAM EDIP28 740mil | 32,69 |
| DS12885Q+ | RTC Multiplex Bus UL PLCC28 | 8,01 |
| DS12887A+ | RTC Multiplex Bus UL DIP24 700mi | 9,04 |
| DS1302+ | RTC 3-Wire Trickle-Charge DIP8 | 3,49 |
| DS1302Z+ | RTC 3-Wire Trickle-Charge SO8 | 2,62 |
| DS1305E+ | RTC SPI Ser. Alarm TSSOP20 | 5,00 |
| DS1305EN+ | RTC SPI Ser. Alarm -40/+85°C TSSOP20 | 5,55 |
| DS1306E+ | RTC SPI Ser. Alarm TSSOP20 | 5,00 |
| DS1307+ | RTC I2C 56B NV SRAM DIP8 | 2,94 |
| DS1307Z+ | RTC I2C 56B NV SRAM SO8 | 2,46 |
| DS1318+ | RTC Par. 8Bit El. Time Counter T | 3,89 |
| DS1337+ | RTC I2C 2xTime-Of-Day-Alarm DIP8 | 2,38 |
| DS1337S+ | RTC I2C 2xTime-Of-Day-Alarm SO8 | 2,22 |
| DS1388Z-5+ | RTC I2C Trickle-Charge SO8 | 4,92 |
| DS1390U-33+ | RTC SPI Trickle-Charge µMAX10 | 3,25 |
| DS1501W+ | RTC Par. 8Bit 256B NV SRAM DIP28 | 4,36 |
| DS1602S+ | RTC 3-Wire El. Time Counter SOL8 | 6,03 |
| DS1629S+ | RTC I2C + Dig. Thermometer SO8 | 7,70 |
| DS1644-120+ | RTC Par. 8Bit 32KB NV SRAM EDIP28 720mil | 34,43 |
| DS1670E+ | RTC 3-Wire U-Mon ADC TSSOP20 | 7,14 |
| DS1672S-33+ | RTC I2C 3,3V Power Monit. SO8 | 2,70 |
| DS1673S-3+ | RTC 3-Wire 3,0V Port. System-Contr SOL20 | 9,44 |
| DS1678S+ | RTC I2C 2KB Event Log Mem SO8 | 7,06 |
| DS1685-5+ | RTC Multiplex Bus UL DIP24 600mi | 7,14 |
| DS1685EN-3+ | RTC Multiplex Bus 3,0V UL TSSOP2 | 6,90 |
| DS1685SN-3+ | RTC Multiplex Bus 3,0V UL SOL24 | 7,54 |
| DS2417P+ | RTC 1-Wire Interrupt TSOC6 | 1,90 |
| RTC4513 | RTC Ser. Interf. 25ppm SOP14 | 3,33 |
| RTC4543SAA | RTC Ser. Interf. 12ppm SOP14 | 2,86 |
| RTC4543SAB | RTC Ser. Interf. 23ppm SOP14 | 2,06 |
| RTC4543SBB | RTC Ser. Interf. 23ppm SOP18 | 3,01 |
| RTC4574JE | RTC Ser. Alarm/Timer 23ppm VSOJ20 | 2,86 |
| RTC4574SAA | RTC Ser. Alarm/Timer 12ppm SOP14 | 3,41 |
| RTC4574SAB | RTC Ser. Alarm/Timer 23ppm SOP14 | 2,70 |
| RTC62421A | RTC Par. 4Bit 10ppm DIP18 | 6,03 |
| RTC72421A | RTC Par. 4Bit 10ppm DIP18 | 5,16 |
| RTC72423A | RTC Par. 4Bit 20ppm SOP24 | 5,32 |
| RTC7301SF | RTC Par. 4Bit Alarm/Timer 23ppm SSOP24 | 6,90 |
| RTC8564JE | RTC I2C LP 23ppm VSOJ20 | 3,25 |
| RX4045SAA | RTC Ser. Interf. 5ppm SOP14 | 3,09 |
| RX4581NBB | RTC Ser. Interf. SRAM 23ppm SON22 | 3,57 |
| RX8025SAA | RTC I2C 5ppm SOP14 | 3,01 |
| RX8581SAB | RTC I2C 23ppm SOP14 | 2,78 |
| PCF8563P | I2C Clock/Calendar DIP8 | 1,96 |
| PCF8563T-SMD | I2C Clock/Calendar SO8 | 1,07 |
| PCF8593P | I2C Clock/Calendar DIP8 | 3,21 |
| PCF8593T-SMD | I2C Clock/Calendar SO8 | 3,12 |
alle Preise in EUR/Stück, inklusive MwSt., zuzüglich Versandkosten