Real Time Clocks
Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.
Product List
Total Components: 2,323
| Product | Pricing | Datasheet | Type | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply | Voltage - Supply, Battery | Current - Timekeeping (Max) | Operating Temperature | Mounting Type | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DS1251WP-120+ ADI (Analog Devices, Inc.) | 1 $39.4730 | Datasheet | Phantom Time Chip | Leap Year, NVSRAM | 512KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 7mA @ 3.3V | 0°C ~ 70°C | Surface Mount | 34-PowerCap™ Module | 34-PowerCap Module | 1,538 Cart + RFQ |
DS1251W-120IND+ ADI (Analog Devices, Inc.) | 1 $46.0565 | Datasheet | Phantom Time Chip | Leap Year, NVSRAM | 512KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 7mA @ 3.3V | -40°C ~ 85°C | Through Hole | 32-DIP Module (0.600", 15.24mm) | 32-EDIP | 7,013 Cart + RFQ |
DS1556-70IND+ ADI (Analog Devices, Inc.) | 1 $46.4927 | Datasheet | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 6mA @ 5V | -40°C ~ 85°C | Through Hole | 32-DIP Module (0.600", 15.24mm) | 32-EDIP | 2,451 Cart + RFQ |
DS1251YP-70IND+ ADI (Analog Devices, Inc.) | 1 $47.6320 | Datasheet | Phantom Time Chip | Leap Year, NVSRAM | 512kb | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 10mA @ 5V | -40°C ~ 85°C | Surface Mount | 34-PowerCap™ Module | 34-PowerCap Module | 8,215 Cart + RFQ |
DS1251WP-120IND+ ADI (Analog Devices, Inc.) | 1 $48.5090 | Datasheet | Phantom Time Chip | Leap Year, NVSRAM | 512KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 7mA @ 3.3V | -40°C ~ 85°C | Surface Mount | 34-PowerCap™ Module | 34-PowerCap Module | 5,725 Cart + RFQ |
DS1747-70IND+ ADI (Analog Devices, Inc.) | 1 $49.2150 | Datasheet | Clock/Calendar | Leap Year, NVSRAM, Y2K | 512KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 4mA @ 5V | -40°C ~ 85°C | Through Hole | 32-DIP Module (0.600", 15.24mm) | 32-EDIP | 2,979 Cart + RFQ |
PCF8564AU/5BB/1,01 Freescale / NXP Semiconductors | 1 $0.5071 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | Die | Die | 5,719 Cart + RFQ |
PCF8564AU/5GB/1,01 Freescale / NXP Semiconductors | 1 $0.5071 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | Die | Die | 9,659 Cart + RFQ |
PCF85063AT/AAZ Freescale / NXP Semiconductors | 1 $0.5078 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 0.9V ~ 5.5V | - | 0.6µA @ 3.3V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SO | 3,141 Cart + RFQ |
PCF2123U/12HA/1,00 Freescale / NXP Semiconductors | 1 $0.5696 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.6V ~ 5.5V | - | 0.33µA ~ 0.38µA @ 2V ~ 5V | -40°C ~ 85°C | - | Die | Die | 3,727 Cart + RFQ |
PCF8564AU/10AB/1,0 Freescale / NXP Semiconductors | 1 $0.5764 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | Die | Die | 8,211 Cart + RFQ |
PCF2123U/10AA/1,00 Freescale / NXP Semiconductors | 1 $0.6456 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.6V ~ 5.5V | - | 0.33µA ~ 0.38µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | Die | Die | 1,878 Cart + RFQ |
PCF8564AUG/12HB/1V Freescale / NXP Semiconductors | 1 $0.6456 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | Die | Die | 1,754 Cart + RFQ |
PCF8523AUG/HAV Freescale / NXP Semiconductors | 1 $0.6594 | Datasheet | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.6V ~ 5.5V | 1.8V ~ 5.5V | 0.5µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | Die | Die | 2,138 Cart + RFQ |
PCF8523U/12AA/1,00 Freescale / NXP Semiconductors | 1 $0.8300 | Datasheet | - | - | - | - | - | - | - | - | - | - | - | - | - | 4,429 Cart + RFQ |
PCA8565AU/5BB/1,01 Freescale / NXP Semiconductors | 1 $0.9681 | Datasheet | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.9µA ~ 1.8µA @ 2V ~ 5V | -40°C ~ 125°C | Surface Mount | Die | Die | 5,733 Cart + RFQ |
BQ32000D None | 1 $138.4616 | Datasheet | - | - | - | - | - | - | - | - | - | - | - | - | - | 100,000 Cart + RFQ |
ISL1218IBZ None | 1 $1.0000 | Datasheet | Clock/Calendar | Alarm, Leap Year, SRAM | 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 8,687 Cart + RFQ |
ISL12024IBZ None | 1 $1.0000 | Datasheet | Clock/Calendar | Alarm, Leap Year, Unique ID | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 8,302 Cart + RFQ |
ISL12058IRTZ-T None | 1 $1.0000 | Datasheet | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.8V ~ 3.6V | - | 0.65µA @ 1.8V | -40°C ~ 85°C | Surface Mount | 8-WDFN Exposed Pad | 8-TDFN (3x3) | 5,452 Cart + RFQ |