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Analog Devices DS1341U+T&R — Analog & Data Acquisition
Analog Devices

Maxim DS1341U+T&R RTC Clock/Calendar, I2C, 8-uMAX

MPNDS1341U+T&R
End of Life

Maxim DS1341U+T&R, Clock/Calendar RTC, I2C 2-Wire Serial, Alarm/Leap Year/Square Wave Output, 1.8V–5.5V, 0.5µA–0.6µA Timekeeping, -40°C–85°C, 8-uMAX/uSOP, Tape & Reel.

$3.45Ref. price · indicative, final on quote
DS1341U+T&R datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

DS1341U+T&R Technical Specifications
ParameterValue
TypeClock/Calendar
Mounting typeSurface Mount
Voltage1.8V ~ 5.5V
Current - timekeeping0.5µA ~ 0.6µA @ 3V ~ 5V
InterfaceI²C, 2-Wire Serial
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesAlarm, Leap Year, Square Wave Output
Date formatYY-MM-DD-dd
Time formatHH:MM:SS (12/24 hr)
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)

Product details

RTC with sub-microamp timekeeping for battery-backed designs

The DS1341U+T&R is a real-time clock/calendar IC that tracks time in HH:MM:SS (12/24 hr) and date in YY-MM-DD-dd format, with automatic leap-year compensation. It communicates over an I2C-compatible 2-wire serial interface.

Active lifecycle and compliance

It is ROHS3 compliant. No official second-source or pin-compatible replacement is listed in the Maxim portfolio, so the part is single-sourced; however, the active lifecycle and broad distributor stocking mitigate supply risk.

Frequently asked questions

Is DS1341U+T&R RoHS compliant?

Yes, the DS1341U+T&R is ROHS3 compliant, meeting the latest EU RoHS requirements.

What is the closest pin-compatible alternative to DS1341U+T&R in this component family?

Maxim does not list a direct pin-compatible second-source or replacement for the DS1341U+T&R within its own portfolio. For a functionally similar I2C RTC in the same package, consider the DS1340U+ (8-uMAX), which also offers a clock/calendar with trickle charger, but verify pin compatibility against the datasheet.

How accurate is the DS1341U+T&R RTC?

The DS1341U+T&R uses an external 32.768 kHz crystal for timekeeping; its accuracy depends entirely on the crystal's tolerance and temperature stability. The RTC itself does not include on-chip temperature compensation or trimming registers, so the overall timekeeping error is dominated by the crystal's ppm rating. A typical ±20 ppm crystal yields about ±1.7 seconds per day deviation.

How to set alarm on DS1341U RTC?

The alarm is set by writing the desired alarm time and date match registers (seconds, minutes, hours, day/date) via I2C, then enabling the alarm interrupt in the control register. The alarm can be configured for a one-time match or a repeating match (e.g., every minute, every hour). The alarm output is available on the INT pin or can be routed to the square-wave output pin.