| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | DS1372U+T&R | Maxim | IC RTC BINARY CNT I2C 8-USOP |
 | MC14541BFG | Onsemi | Real Time Clock IC, 1 Timer, 3MHz, 18V, 500mW, SOIC-14 |
 | DS1337C | Maxim | Real Time Clock, 1 Timer(s), CMOS, PDSO16, 0.300 INCH, SOIC-16 |
 | DS1678S/T&R | Maxim | IC RTC EVENT REC I2C 8-SOIC |
 | BQ4285S-SB2TR | Texas Instruments | RTC IC With 114x8 NVSRAM and NVSRAM Control 24-SOIC 0 to 70 |
 | DS1644P-120 | Maxim | Real Time Clock IC, 32KB, 5V, 0-70°C, Surface Mount |
No Image | MCP79401-I/SN | Microchip | Real-Time Clock I2C, 64-Bit Memory, 1.8V to 5.5V, SOIC-8 |
 | ISL12057IBZ-T | Intersil | Real Time Clock, 3.3V, 85°C, SOIC, RoHS Compliant |
 | HT1381-8SOPLF | Holtek | HOLTEK HT1381-8SOPLF IC, TIMEKEEPER, SERIAL, SMD, SOP8 |
 | BQ4285S-SB2 | Texas Instruments | Real Time Clock IC 5V 4.5V 5.5V 0°C 70°C Surface Mount |
No Image | ISL1219IUZ | Intersil | Clock IC, I2C Interface, 400kHz, MSOP Package, -40°C to 85°C |
 | CP82C54Z | Intersil | 8MHz 1-Channel RTC Timer IC, 5V, 10mA, PDIP-32 |
 | PCF8564AU/5BB/1,01 | NXP | Unpackaged RTC IC, 1.8V to 5.5V, -40°C to 85°C |
 | ISL12027IV27Z | Intersil | Real Time Clock, 512B, 3.3V, I2C/Ser, TSSOP8, -40°C to 85°C |
 | BQ3287AMT-I | Texas Instruments | Clock IC 5V 4.5V 5.5V 114B PDIP Through Hole -20°C 70°C |
 | BQ3285LDSSTR | Texas Instruments | Clock IC Real-Time 3V 2.7V to 5.5V SSOP-24 |
 | ISL12025IBZ | Intersil | Real-Time Clock/Calendar with I<sup>2</sup>C Bus™ and EEPROM; SOIC8, TSSOP8; Temp Range: -40° to 85°C |
 | M48T86MH1E | Stmicroelectronics | 1 TIMER(S), REAL TIME CLOCK, PDSO28, 0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-28 |
 | M41ST87YMX6 | Stmicroelectronics | 1 TIMER(S), REAL TIME CLOCK, PDSO28, 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOX-28 |
No Image | DS1556-70+ | Maxim | IC RTC CLK/CALENDAR PAR 32-EDIP |