| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | STK17TA8-RF45I | Cypress | 1Mb Non-Volatile Parallel RTC, 45ns Access Time, 3.6V 85°C |
 | DS1685-5IND+ | Maxim | Real Time Clock IC, 242B Memory, 5V Supply, DIP Package, -40 to 85°C |
No Image | 84065023A | Renesas | 28-Pin Quad Timer IC, 16-Bit, 12 MHz, 5V, MIL-STD-883 |
No Image | MCP795W12T-I/ST | Microchip | 8-Bit Real-Time Clock Timer IC, 5V, 14-Pin TSSOP-14, Industrial Temperature |
No Image | RX-8025SA | Seiko | Real Time Clock Timer IC, Industrial Temp, 3V, 14-Pin SOP-14 |
 | DS1302N+ | Maxim | Real Time Clock IC, 31B Memory, 3.3V, 5.5V, PDIP Package |
No Image | M41T11M6TR | Stmicroelectronics | 8-Pin Industrial Timer IC, 3V to 5.5V, 0.032 MHz, SOP8 Package |
No Image | MCP795W11-I/ST | Microchip | 8-Bit Real Time Clock Timer IC, 5V, Industrial Temperature, TSSOP-14 |
No Image | DS1344D-18+ | Maxim | Real Time Clock, SPI Interface, 96B Memory, 1.71V to 5.5V Supply |
 | DS1251YP-70+ | Maxim | 70ns Clock IC, 512KB, 5V, Surface Mount, 0°C to 70°C, RoHS Compliant |
 | M48T58Y-70MH1 | Stmicroelectronics | 70ns Clock IC, SOIC, 0°C to 70°C, 4.5V to 5.5V, Lead Free |
 | BQ3285P-SB2E3 | Texas Instruments | 5V Real Time Clock IC, 114B Memory, PDIP Package, Through Hole Mount |
No Image | RTC-4574SA | Seiko | 14-Pin Industrial RTC Timer IC, 3V 5.5V, 0.032MHz, SOP-14 Package |
 | 5P90005DCGI | Renesas | 8-Pin SOIC Lead-Frame SMT Clock/Calendar IC |
No Image | DS1344E-18+T&R | Maxim | DS1344E-18 Real-Time Clock IC, SPI Interface, 96B Memory, 1.8V Supply |
No Image | MCP795B11T-I/SL | Microchip | Industrial 8-Bit Real Time Clock Timer, 5V 4.5V 5.5V, SOIC-14 |
No Image | MCP795W20-I/ST | Microchip | 14-Pin Industrial-Grade Real-Time Clock Timer IC |
 | ISL12029AIB27Z | Intersil | Real Time Clock, I2C/Ser, 2-Wire, 3.3V, SOIC-14 |
 | DS14287 | Maxim | Real Time Clock IC, Parallel Interface, 114B Memory, 0-70°C |
 | DS1305E | Maxim | 5V Real-Time Clock IC, SPI Interface, 96B Memory, TSSOP-20 Package |