 | ISL12057IBZ | Renesas | Low Cost and Low Power I<sup>2</sup>C RTC/Calendar with Alarm Function and Dual IRQ pins |
 | ISL12082IB8Z-T | Renesas | Low Power RTC with Battery ReSeal™, 2 IRQs, Hundredths of a Second Time, and Crystal Compensation |
 | DS1689 | Maxim | 28-Pin PDIP Real-Time Clock IC 0°C to 70°C 2.7V to 5.5V |
 | DS1553-100+ | Maxim | IC RTC CLK/CALENDAR PAR 28-EDIP |
 | DS1603 | Maxim | Real Time Clock, 1 Timer(s), CMOS, LOW PROFILE, SIP-7 |
 | DS1501WEN+T&R | Maxim | IC RTC CLK/CALENDAR PAR 28-TSOP |
 | DS1742-85+ | Maxim | IC RTC CLK/CALENDAR PAR 24-EDIP |
 | DS14285S+ | Maxim | IC RTC CLK/CALENDAR PAR 24-SOIC |
 | DS2404B | Maxim | Real Time Clock, 0 Timer(s), CMOS, PDSO16, 0.208 INCH, SSOP-16 |
 | DS1643P-70 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, POWERCAP, MODULE-34 |
 | ISL12027IB30AZ-T | Intersil | IC RTC CLK/CALENDAR I2C 8-SOIC |
 | DS1553-70 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28, 0.740 INCH, ENCAPSULATED, DIP-28 |
 | ISL12059IBZ-T | Intersil | IC RTC CLK/CALENDAR I2C 8-SOIC |
 | ISL12058IBZ | Renesas | Low Cost, Low Power I2C-Bus™ Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function |
 | DS1315N-33 | Maxim | Real Time Clock, Volatile, 0 Timer(s), CMOS, PDIP16, 0.300 INCH, DIP-16 |
 | DS14285QN | Maxim | Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PQCC28, PLASTIC, LCC-28 |
 | DS1344E-18+ | Maxim | Real Time Clock Low-Current SPI/3-Wire RTC |
 | DS17485S-5+ | Maxim | IC RTC CLK/CALENDAR PAR 24-SOIC |
 | DS1743W-150 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, EDIP MODULE-28 |
 | ISL12027AIB27Z | Intersil | Real Time Clock/Calendar with EEPROM; SOIC8, TSSOP8; Temp Range: -40° to 85°C |
