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Analog Devices DS1343E-3+ — Discrete Semiconductors

DS1343E-3+ RTC Clock/Calendar SPI 20-TSSOP Analog Devices

MPNDS1343E-3+
End of Life

Analog Devices DS1343E-3+ Clock/Calendar RTC, SPI interface, 20-TSSOP, Tube, 96B NVRAM, Alarm, Leap Year, Trickle Charger.

$6.58Ref. price · indicative, final on quote
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DS1343E-3+ specifications
ParameterValue
TypeClock/Calendar
MountingSurface Mount
Voltage2.7V ~ 5.5V
Voltage - supply, battery1.3V ~ 5.5V
InterfaceSPI
Operating temperature-40°C ~ 85°C
PackageTube
FeaturesAlarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger
Date formatYY-MM-DD-dd
Memory size96B
Time formatHH:MM:SS (12/24 hr)
Case20-TSSOP (0.173\", 4.40mm Width)

Product details

RTC with integrated NVRAM and trickle-charge support

The DS1343E-3+ is an SPI-bus real-time clock from Analog Devices that keeps calendar and time data in YY-MM-DD-dd and HH:MM:SS (12/24 hr) formats, with an integrated 96-byte NVRAM for logging or configuration storage. On-chip features include an alarm, leap-year compensation, a square-wave output, and a trickle charger for backup battery maintenance — all in a 20-pin TSSOP package that reflows cleanly on a standard lead-free profile.