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Analog Devices DS1337U+T&R — DC-DC Power Modules
Analog Devices

DS1337U+T&R Real-Time Clock, I²C, 0.6µA, 8-uMAX/uSOP

MPNDS1337U+T&R
End of Life

Maxim DS1337U+T&R Clock/Calendar RTC, I²C 2-Wire Serial interface, Alarm/Leap Year/Square Wave Output, 1.8V–5.5V supply, -40°C to +85°C, 8-uMAX/uSOP package.

$3.4Ref. price · indicative, final on quote
DS1337U+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

DS1337U+T&R Technical Specifications
ParameterValue
TypeClock/Calendar
Mounting typeSurface Mount
Voltage1.8V ~ 5.5V
Current - timekeeping0.6µA @ 1.3V ~ 1.8V
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

What the DS1337U+T&R is and where it fits

The Maxim DS1337U+T&R is a Clock/Calendar real-time clock with an I²C (2-wire serial) interface, integrating alarm, leap-year compensation, and a programmable square-wave output.

Timekeeping current — why 0.6 µA matters for the BOM

The 0.6 µA maximum timekeeping current at 1.3 V–1.8 V is the headline spec for battery-life budgeting. In a coin-cell-backed RTC application, that draw extends backup runtime.

I²C interface and features

Communication is over a standard I²C (2-wire serial) bus, compatible with virtually every modern MCU. The alarm output and square-wave output (programmable frequency) can serve as a wake-up source or a periodic interrupt without polling the bus.

Lifecycle and compliance

The DS1337U+T&R is listed as Active with ROHS3 compliance. The part is sourced through independent distribution and quoted to order against an RFQ.

Frequently asked questions

Is DS1337U+T&R RoHS compliant?

Yes, it is ROHS3 compliant.

What is the difference between DS1337U+T&R and DS1337S+T&R?

The DS1337U+T&R comes in the 8-uMAX/uSOP package, while the DS1337S+T&R is in an 8-SOIC package. The uMAX is a smaller footprint (3.00 mm width vs ~3.9 mm for SOIC-8) with a finer 0.65 mm pitch. Functionally both are the same I²C RTC with identical features and electrical specs.