Real Time Clocks

Results: 2
Manufacturer
Analog Devices Inc./Maxim IntegratedNXP USA Inc.
Packaging
Cut Tape (CT)Digi-Reel®Tape & Reel (TR)
Features
Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog TimerLeap Year, NVSRAM, Square Wave Output
Memory Size
56B-
Voltage - Supply
1.8V ~ 4.2V4.5V ~ 5.5V
Voltage - Supply, Battery
1.8V ~ 4.2V2V ~ 3.5V
Current - Timekeeping (Max)
1.5µA @ 3.3V200µA @ 5V
Operating Temperature
-40°C ~ 85°C0°C ~ 70°C
Package / Case
8-SOIC (0.154", 3.90mm Width)20-SOIC (0.295", 7.50mm Width)
Supplier Device Package
8-SOIC20-SO
Stocking Options
Environmental Options
Media
Marketplace Product
2Results

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of 2
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Mfr Part #
Quantity Available
Price
Series
Package
Product Status
DigiKey Programmable
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
3,391
In Stock
70,000
Factory
1 : $6.55000
Cut Tape (CT)
2,500 : $3.28406
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot VerifiedClock/CalendarLeap Year, NVSRAM, Square Wave Output56BHH:MM:SS (12/24 hr)YY-MM-DD-ddI2C, 2-Wire Serial4.5V ~ 5.5V2V ~ 3.5V200µA @ 5V0°C ~ 70°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
20-SOIC 0.295
PCF2129AT/2,518
IC RTC CLOCK/CALENDAR I2C 20SO
NXP USA Inc.
0
In Stock
Check Lead Time
1 : $9.18000
Cut Tape (CT)
2,000 : $4.60388
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot VerifiedClock/CalendarAlarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer-HH:MM:SS (12/24 hr)YY-MM-DD-ddI2C, 2-Wire Serial1.8V ~ 4.2V1.8V ~ 4.2V1.5µA @ 3.3V-40°C ~ 85°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SO
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of 2

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.