| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | DS1501WZ+T&R | Maxim | Real Time Clock IC 256B 3.3V 0°C/70°C SOIC |
 | DS1501Y | Maxim | 256B Real Time Clock IC, 5V, Through Hole, 0-70°C, DIP-28 |
 | DS17487-3 | Maxim | Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDIP24, 0.720 INCH, ENCAPSULATED, DIP-24 |
No Image | MCP79402T-I/MS | Microchip | REAL TIME CLOCK, PDSO8, ROHS COMPLIANT, PLASTIC, MSOP-8 |
 | NLV14541BDTR2G | Onsemi | TSSOP Real-Time Clock IC, 3V to 18V, 125°C, Lead Free, RoHS Compliant |
 | DS1672-3+ | Maxim | Real-Time Clock Counter I2C Serial 2-Wire Through Hole DIP |
 | DS1553-100 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28, 0.740 INCH, ENCAPSULATED, DIP-28 |
 | DS1315-33+ | Maxim | IC RTC PHANTOM PAR 16-DIP |
 | DS12885T | Maxim | Real Time Clock, Volatile, 1 Timer(s), CMOS, PQFP32, 7 X 7 MM, 1 MM HEIGHT, TQFP-32 |
 | DS1743-85IND+ | Maxim | IC RTC CLK/CALENDAR PAR 28-EDIP |
 | DS1678 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP8, 0.300 INCH, PLASTIC, DIP-8 |
 | ISL12029AIB27Z-T | Intersil | Real Time Clock, 3.3V, 2.7V to 5.5V, SOIC, -40°C to 85°C |
 | DS14285Q | Maxim | Real Time Clock IC, 114B Memory, 0°C to 70°C, 4.5V to 5.5V, Surface Mount PLCC-28 |
 | DS1672U-3 | Maxim | Real Time Clock Counter I2C/SPI 2.7V-3.3V -40°C-85°C SOP-8 |
 | DS12887A | Maxim | IC RTC CLK/CALENDAR PAR 24-EDIP |
 | DS1677E+ | Maxim | Real Time Clock, 3-WIRE Serial Interface, 5V, TSSOP Package |
 | PCF2127T/1,512 | NXP | 16-Pin SO Surface Mount Clock/Calendar IC with 512-B RAM |
 | ISL12082IUZ-T | Intersil | IC RTC CLK/CALENDAR I2C 10-MSOP |
 | DS1743WP-120IND+ | Maxim | 8KB Real-Time Clock IC, 3.3V, 85°C, Surface Mount, RoHS Compliant |
 | STK17T88-RF45ITR | Cypress | 256Kb NVSRAM, 8b Parallel Interface, SSOP-48, -40°C to 85°C |