| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | DS17485-3 | Maxim | Clock IC Real-Time 4KB, 2.7-3.7V, 0-70°C, Through Hole, DIP-24 |
 | DS1742W-120 | Maxim | Real Time Clock IC 2KB DIP-24 0°C to 70°C |
 | ISL12082IB8Z | Renesas | Low Power RTC with Battery ReSeal™, 2 IRQs, Hundredths of a Second Time, and Crystal Compensation |
No Image | PCF2127T | NXP | 1 TIMER(S), REAL TIME CLOCK, PDSO16, 7.50 MM, PLASTIC, MS-013, SOT162-1, SOP-16 |
No Image | PCF8564AUG/12HB/1V | NXP | Real Time Clock Real time clock and calendar |
 | DS1501Y+ | Maxim | IC RTC CLK/CALENDAR PAR 28-DIP |
 | ISL1209IU10Z | Renesas | Low Power RTC with Battery Backed SRAM and Event Detection |
 | DS17885E-3+ | Maxim | 8KB Real Time Clock IC, 3V, 2.7V to 3.7V, TSOP, Surface Mount |
No Image | RS5C372B | Ricoh | 8-Pin Industrial-Grade Real-Time Clock IC, 3V to 6V Supply, LSSOP-8 Package |
 | CDP68HC68T1MZ | Renesas | CMOS Serial Real-Time Clock With RAM and Power Sense/Control |
 | DS1501YEN | Maxim | Real Time Clock, 256B, 4.5-5.5V, -40-85°C, TSOP-28 |
 | M41T0DS6E | Stmicroelectronics | TSSOP-8 Surface Mount Clock IC, 2V to 5.5V, -40°C to 85°C |
 | DS1743WP-150+ | Maxim | 8KB Real Time Clock IC, 3.3V, Surface Mount, 0°C to 70°C |
 | ISL12058IRTZ-T | Renesas | Low Cost, Low Power I2C-Bus™ Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function |
 | AB0811-T3 | Abracon | Industrial Clock IC, QFN, SPI, 1.7V to 3.6V, -40°C to 85°C |
 | ISL12029IVZ | Intersil | Real Time Clock I2C/SPI Bridge, 960-Piece TSSOP, -40°C to 85°C, 2.7V to 5.5V |
 | ISL12028AIV27Z | Intersil | Clock IC Real-Time 32.768kHz 3.3V I2C/Surface Mount TSSOP |
 | ISL12008IB8Z | Renesas | I2C Real Time Clock with Battery Backup Low Power RTC with Battery ReSeal™ Function |
 | RTC72421B | Epson | 8-Bit Real Time Clock, DIP Package, 1MHz Frequency, 4.5-5.5V Supply |
 | DS1672-3 | Maxim | Real Time Clock Counter, Binary Date/Time, I2C/Serial, Through Hole DIP-8 |