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
- 1,269
- In Stock :
- 1,269
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- Manufacturer :
- Analog Devices, Inc.
- Product Category :
- Real Time Clocks
- Voltage - Supply, Battery :
- 2V~5.5V
- Length :
- 6.5mm
- Current - Timekeeping (Max) :
- 25.3μA~81μA @ 2V~5V
- Published :
- 2002
- Time-Min :
- SECONDS
- JESD-609 Code :
- e3
- Weight :
- 190.990737mg
- Pin Count :
- 20
- Height :
- 900μm
- Pbfree Code :
- yes
- RoHS Status :
- ROHS3 Compliant
- Date Format :
- YY-MM-DD-dd
- Voltage - Supply :
- 2V~5.5V
- Radiation Hardening :
- No
- Packaging :
- Tube
- Interface :
- SPI
- Type :
- Clock/Calendar
- Contact Plating :
- Tin
- Logic Function :
- Clock
- Time@Peak Reflow Temperature-Max (s) :
- 30
- Memory Size :
- 96B
- Feature :
- Alarm, Leap Year, NVSRAM, Trickle-Charger
- Mounting Type :
- Surface Mount
- Number of Terminations :
- 20
- Terminal Position :
- Dual
- Supply Voltage :
- 5V
- Interrupt Capability :
- Y
- REACH SVHC :
- No SVHC
- Width :
- 4.4mm
- Time Format :
- HH:MM:SS (12/24 hr)
- Base Part Number :
- DS1305
- Lead Free :
- Lead Free
- Volatile :
- yes
- Frequency :
- 32.8kHz
- Mount :
- Surface Mount
- Voltage :
- 5V
- Number of Outputs :
- 1
- Factory Lead Time :
- 6 Weeks
- Number of Pins :
- 20
- Peak Reflow Temperature (Cel) :
- 260
- Package / Case :
- 20-TSSOP (0.173, 4.40mm Width)
- Operating Temperature :
- 0°C~70°C
- Terminal Pitch :
- 0.65mm
- ECCN Code :
- EAR99
- Information Access Method :
- SERIAL, 3-WIRE
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Datasheets
- DS1305E+

Real Time Clocks Analog Devices, Inc. DS1305E+ Overview
The Real Time Clocks Analog Devices, Inc. DS1305E+ is a highly integrated real-time clock/calendar optimized for low-power applications. Utilizing a Serial Peripheral Interface (SPI) for data communication, this IC ensures accurate time tracking up to seconds, minutes, hours, days, and beyond. The DS1305E+ is housed in a compact 20-TSSOP package, making it ideal for space-constrained applications where maintaining accurate time is critical. Its robust feature set and versatility make it a perfect choice for manufacturers looking to incorporate reliable timekeeping into their systems without sacrificing board space or power efficiency.
DS1305E+ Features
The DS1305E+ by Analog Devices stands out with its full clock calendar functionality which includes seconds, minutes, hours, day, date, month, and year timing. The device adjusts for months with fewer than 31 days and leap years up to 2100. Key features include two programmable time-of-day alarms, a programmable square-wave output, and a serial interface that supports SPI Mode 3 communication. The device is designed for low power consumption and operates over the industrial temperature range.
DS1305E+ Applications
- Consumer Electronics: Integrates into devices such as smart home controllers, wearable health monitors, and other consumer gadgets, enabling these devices to maintain accurate time for effective operation and logging activities.
- Networking Equipment: Used in routers, switches, and networked communication devices to provide accurate time-stamping for network operations, helping to coordinate logs and system functions across various devices.
- Industrial Systems: Serves in factory automation systems, providing the necessary timing functions to ensure synchronized operations and event scheduling in an industrial environment.
- Portable Battery-Powered Devices: Ideal for applications where power efficiency is critical, such as in handheld GPS units, portable medical devices, and field communication equipment, ensuring consistent performance with minimal power draw.
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