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Real Time Clock (RTC) IC Clock/Calendar 96B SPI 14-WFDFN Exposed Pad

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DS1344D-3+T&R General Description

The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source. The devices also support high-ESR crystals, broadening the pool of usable crystals for the devices. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either 24-hour or 12-hour format with an active-low AM/PM indicator.

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Key Features

  • Low Timekeeping Current of 250nA (typ)
  • Compatible with Crystal ESR Up to 100kΩ
  • Versions Available to Support Either 6pF or 12.5pF Crystals
  • RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Through 2099
  • Power-Fail and Switch Circuitry
  • Three Operating Voltages
    • 1.8V ±5%
    • 3.0V ±10%
    • 3.3V ±10%
  • Trickle-Charge Capability
  • Maintain Time Down to 1.15V (typ)
  • Support Motorola SPI Modes 1 and 3, or Standard 3-Wire Interface
  • Burst Mode for Reading/Writing Successive Addresses in Clock/RAM
  • 96-Byte Battery-Backed NV RAM for Data Storage
  • Two Time-of-Day Alarms with Two Interrupt Outputs
  • Industrial Temperature Range
  • 20-Pin TSSOP or 14-Pin TDFN Package


  • Embedded Timestamping
  • Handheld Devices
  • Medical
  • Telematics


model DS1344D-3+T&R package Thin Dual Flatpack No Leads
packingQty Reel,2500 packingOption Reel
packageType T1433+2 rohs roHSY
lifeCycle production tempRange -40 to 85C
Manufacturer Analog Devices Inc. Product Category Real Time Clock
RoHS Details Mounting Style SMD/SMT
Package / Case TDFN-14 RTC Bus Interface Serial, 3-Wire, SPI
Date Format YY-MM-DD-dd Time Format HH:MM:SS (12 hr, 24 hr)
Battery Backup Switching Backup Switching RTC Memory Size 96 B
Supply Voltage - Max 5.5 V Supply Voltage - Min 2.7 V
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 85 C
Brand Analog Devices / Maxim Integrated Product Type Real Time Clocks
Series DS1344D Factory Pack Quantity 2500
Subcategory Clock & Timer ICs

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shipping Shipping And Packing
Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

warranty Warranty & Returns

Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


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Availability: 6819 pieces

Qty. Unit Price(USD) Ext. Price
1+ $4.637 $4.64
30+ $4.086 $122.58

The prices below are for reference only.