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Analog Devices DS1390U-33+T&R — DC-DC Power Modules
Analog Devices

DS1390U-33+T&R Real-Time Clock/Calendar, SPI, 10-uMAX

MPNDS1390U-33+T&R
End of Life

Maxim DS1390U-33+T&R, Clock/Calendar RTC, SPI interface, YY-MM-DD-dd date, HH:MM:SS:hh time, 2.97V to 5.5V supply, -40°C to 85°C, 10-uMAX/uSOP package.

$4.43Ref. price · indicative, final on quote
DS1390U-33+T&R datasheet
Packaging10-TFSOP, 10-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

DS1390U-33+T&R Technical Specifications
ParameterValue
TypeClock/Calendar
Mounting typeSurface Mount
Voltage2.97V ~ 5.5V
Voltage - supply, battery1.3V ~ 5.5V
Current - timekeeping175µA @ 2.97V ~ 5.5V
InterfaceSPI
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesAlarm, Leap Year, Square Wave Output, Trickle-Charger
Date formatYY-MM-DD-dd
Time formatHH:MM:SS:hh (12/24 hr)
Case10-TFSOP, 10-MSOP (0.118\", 3.00mm Width)

Product details

Temperature grade and environment

Rated for -40°C to 85°C, this RTC is suited for industrial enclosures, outdoor telecom pedestals, and factory-floor controllers where the ambient temperature swings beyond office-grade limits. The surface-mount 10-uMAX/uSOP footprint (3.00 mm width) keeps board area tight — a common constraint in panel-mount I/O modules and compact data loggers.

Lifecycle and sourcing

The DS1390U-33+T&R carries an Active product status and is ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect.

Frequently asked questions

Does DS1390U-33+T&R support battery backup?

Yes. The DS1390U-33+T&R includes a dedicated battery-supply input (1.3V to 5.5V) for backup power, plus a trickle-charger to maintain a rechargeable backup cell or capacitor during main power.

What is the closest pin-compatible alternative to DS1390U-33+T&R?

Within the Maxim SPI RTC family, the DS1390U-33+T&R shares the same 10-uMAX/uSOP footprint and SPI interface with other DS1390 variants. For a direct replacement, verify the supply voltage and temperature grade against the specific variant — no single pin-compatible alternate is listed in the available records.