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Analog Devices DS1340C-3# — DC-DC Power Modules
Analog Devices

DS1340C-3# RTC Clock/Calendar, I²C, 16-SOIC, Industrial Temp

MPNDS1340C-3#
End of Life

Maxim DS1340C-3#, Clock/Calendar RTC, I²C 2-Wire Serial, YY-MM-DD-dd / HH:MM:SS (24 hr), 2.7V-5.5V, 1.3V-3.7V battery backup, -40°C~85°C, 16-SOIC, Tube.

$7.45Ref. price · indicative, final on quote
DS1340C-3# datasheet
Packaging16-SOIC (0.295", 7.50mm 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

DS1340C-3# Technical Specifications
ParameterValue
TypeClock/Calendar
Mounting typeSurface Mount
Voltage2.7V ~ 5.5V
Voltage - supply, battery1.3V ~ 3.7V
Current - timekeeping125µA @ 3.3V
InterfaceI²C, 2-Wire Serial
Operating temperature-40°C ~ 85°C
PackageTube
FeaturesLeap Year, Trickle-Charger
Date formatYY-MM-DD-dd
Time formatHH:MM:SS (24 hr)
Case16-SOIC (0.295\", 7.50mm Width)

Product details

What the DS1340C-3# is and where it fits

The Maxim DS1340C-3# is a serial real-time clock/calendar in a 16-pin SOIC package, communicating over an I²C (2-wire) interface. It tracks time in 24-hour HH:MM:SS format and calendar in YY-MM-DD-dd, with automatic leap-year correction. The part includes a trickle-charger for a backup battery, so the clock keeps running through a main-power loss. With a 2.7 V to 5.5 V supply range and industrial temperature rating (-40°C to 85°C), it fits embedded systems that need accurate timekeeping across power cycles — utility meters, industrial controllers, security panels, and data loggers.

Lifecycle and compliance

Listed as Active with ROHS3 compliance.

Frequently asked questions

Does DS1340C-3# support a backup battery?

Yes. It has a dedicated battery-supply pin (1.3 V to 3.7 V) and an integrated trickle-charger, so a 3 V lithium coin cell or rechargeable backup can keep the clock running during main-power loss.

Is DS1340C-3# pin compatible with DS1337?

The DS1337 is a different pinout and feature set — it lacks the trickle-charger and uses a different package option. They are not drop-in replacements. If you need a pin-compatible RTC with trickle-charge, stay with the DS1340C-3# or its direct siblings in the same package.

What is the price of DS1340C-3#?

Pricing depends on quantity and current market conditions. Submit an RFQ for a live quote — the spot price is confirmed at quote time, not listed here.

What is DS1340C-3#'s listed type on this component line?

The device type is Clock/Calendar — a serial real-time clock with full time-of-day and date tracking.