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Analog Devices DS1390U-3+T&R — Analog & Data Acquisition
Analog Devices

DS1390U-3+T&R RTC Clock/Calendar, SPI, 10-uMAX/uSOP

MPNDS1390U-3+T&R
End of Life

Analog Devices DS1390U-3+T&R Clock/Calendar RTC, SPI interface, 10-uMAX/uSOP, 2.7V-3.3V supply, -40°C to +85°C.

$4.39Ref. price · indicative, final on quote
Packaging10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
StockContact for availability
Lead timeIn Stock wk
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-3+T&R Technical Specifications
ParameterValue
TypeClock/Calendar
Mounting typeSurface Mount
Voltage2.7V ~ 3.3V
Voltage - supply, battery1.3V ~ 3.7V
Current - timekeeping125µA @ 2.7V ~ 3.3V
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

Active SPI RTC with trickle-charge and alarm

The DS1390U-3+T&R is a real-time clock/calendar from Analog Devices, part of the DS1390 family, communicating over an SPI bus. It tracks time in HH:MM:SS:hh (12/24 hr) and date in YY-MM-DD-dd format, with an integrated alarm, leap-year compensation, and a square-wave output for system timing. A trickle-charger on the backup battery input (1.3V–3.7V) keeps the timekeeping alive when the main 2.7V–3.3V supply drops.

125 µA timekeeping at 2.7V–3.3V

Maximum timekeeping current is 125 µA across the full 2.7V–3.3V supply range — important for battery-backed designs where quiescent draw directly affects cell life. Packaged in a 10-TFSOP/MSOP (0.118", 3.00mm width) with a 10-uMAX/uSOP supplier device package — a compact footprint for space-constrained PCBs.