DS1305E
- Mfr.Part #
- DS1305E
- Manufacturer
- Analog Devices, Inc.
- Package / Case
- 20-TSSOP (0.173, 4.40mm Width)
- Datasheet
- Download
- Description
- IC RTC CLK/CALENDAR SPI 20-TSSOP
- Stock
- 47,185
- In Stock :
- 47,185
Request A Quote(RFQ)
- * Fullname:
- * Company:
- * E-Mail:
- Phone:
- Comment:
- * Quantity:
- Manufacturer :
- Analog Devices, Inc.
- Product Category :
- Real Time Clocks
- Pbfree Code :
- yes
- Information Access Method :
- SERIAL, 3-WIRE
- Lead Free :
- Lead Free
- Voltage - Supply, Battery :
- 2V~5.5V
- Volatile :
- yes
- Time-Min :
- SECONDS
- ECCN Code :
- EAR99
- Supply Voltage :
- 5V
- Height :
- 900μm
- JESD-609 Code :
- e3
- Number of Outputs :
- 1
- Current - Timekeeping (Max) :
- 25.3μA~81μA @ 2V~5V
- Width :
- 4.4mm
- Voltage :
- 5V
- Peak Reflow Temperature (Cel) :
- 260
- Contact Plating :
- Tin
- Operating Temperature :
- 0°C~70°C
- Date Format :
- YY-MM-DD-dd
- Factory Lead Time :
- 6 Weeks
- Time@Peak Reflow Temperature-Max (s) :
- 30
- REACH SVHC :
- No SVHC
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Number of Pins :
- 20
- Base Part Number :
- DS1305
- Packaging :
- Tube
- Mount :
- Surface Mount
- Number of Terminations :
- 20
- Mounting Type :
- Surface Mount
- Weight :
- 190.990737mg
- RoHS Status :
- ROHS3 Compliant
- Time Format :
- HH:MM:SS (12/24 hr)
- Pin Count :
- 20
- Radiation Hardening :
- No
- Voltage - Supply :
- 2V~5.5V
- Memory Size :
- 96B
- Interface :
- SPI
- Frequency :
- 32.8kHz
- Logic Function :
- Clock
- Feature :
- Alarm, Leap Year, NVSRAM, Trickle-Charger
- Published :
- 2002
- Length :
- 6.5mm
- Type :
- Clock/Calendar
- Terminal Position :
- Dual
- Terminal Pitch :
- 0.65mm
- Package / Case :
- 20-TSSOP (0.173, 4.40mm Width)
- Interrupt Capability :
- Y
- Datasheets
- DS1305E

Real Time Clocks Analog Devices, Inc. DS1305E Overview
The Real Time Clocks Analog Devices, Inc. DS1305E is a high-performance integrated circuit specifically designed for timekeeping applications in a wide range of digital electronics. Engineered by Analog Devices, a leader in semiconductor design, this real-time clock/calendar provides full binary-coded decimal (BCD) clock/calendar functionality plus 31 bytes of battery-backed Static Random Access Memory (SRAM) via a simple serial interface. Optimized for effective power management with a precision temperature-compensated circuit, the DS1305E ensures reliable timekeeping in applications requiring year, month, day, weekday, hours, minutes, and seconds data.
DS1305E Features
- SPI interface for easy integration into existing digital systems.
- Dual programmable time-of-day alarms increase flexibility in time-sensitive applications.
- Temperature-compensated oscillator ensures high accuracy across varying temperatures.
- Automatic power-fail detect and switch circuitry protects timekeeping operation during power interruptions.
- 31 x 8 battery-backed general-purpose RAM enhances data storage capabilities.
DS1305E Applications
- Embedded Systems: Utilized for maintaining accurate time and date, facilitating time-stamped event logging and system diagnostics.
- Consumer Electronics: Integral in devices requiring real-time clocks, such as digital cameras, radios, and smart home devices, to maintain accurate operational timing.
- Office Electronics: Key component in office equipment like fax machines and printers to track and log tasks based on time and date settings.
- Telecommunications: Employed in network hardware such as routers and switches for time-stamping data packets crucial for data integrity and security.
- Medical Devices: Used in medical equipment that requires time synchronization for monitoring and logging patient data accurately.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















