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Analog Devices DS1340Z-18+ — Discrete Semiconductors
Analog Devices

DS1340Z-18+ RTC, I²C Clock/Calendar, 8-SOIC, Active

MPNDS1340Z-18+
End of Life

Analog Devices DS1340Z-18+ Clock/Calendar RTC, I²C interface, 1.71V-5.5V supply, 8-SOIC package, Tube.

$5.57Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm 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

DS1340Z-18+ Technical Specifications
ParameterValue
TypeClock/Calendar
Mounting typeSurface Mount
Voltage1.71V ~ 5.5V
Voltage - supply, battery1.3V ~ 3.7V
Current - timekeeping100µA @ 1.89V
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)
Case8-SOIC (0.154\", 3.90mm Width)

Product details

I²C real-time clock with trickle-charge and wide supply range

The DS1340Z-18+ is a Clock/Calendar RTC from Analog Devices, communicating over an I²C (2-wire serial) interface. It tracks time in HH:MM:SS (24-hour format) and date in YY-MM-DD-dd format, with leap-year compensation built in. The battery-backup input accepts 1.3V to 3.7V, keeping the RTC running during main power loss. Maximum timekeeping current is 100µA at 1.89V, which sets the battery-life floor in a backup scenario. The trickle-charger feature recharges a supercap or lithium coin cell through a programmable series resistor.

The tube delivery suits prototype and low-volume builds; reel options are available through the supply chain.

Lifecycle and compliance status

Analog Devices lists the DS1340Z-18+ as Active with ROHS3 compliance.

Frequently asked questions

What supply voltages does the DS1340Z-18+ accept?

The DS1340Z-18+ operates from 1.71V to 5.5V on the main supply, and accepts a battery backup voltage of 1.3V to 3.7V.

What is the timekeeping current draw of the DS1340Z-18+?

Maximum timekeeping current is 100µA at 1.89V. For a 200mAh coin cell, this translates to roughly 2000 hours of backup — actual life depends on temperature and the trickle-charger configuration.