DS1374U-33+

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DS1374U-33+

+BOM

IC RTC BINARY CNT I2C 10-USOP

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Specifications

Attribute Value
Supplier Rochester Electronics, LLC,Analog Devices Inc./Maxim Integrated
Package / Case Tube,Tube
Part Status Obsolete
Type Binary Counter
Features Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer
Time Format Binary
Date Format Binary
Interface I²C, 2-Wire Serial
Voltage - Supply 2.97V ~ 5.5V
Voltage - Supply, Battery 1.3V ~ 5.5V
Current - Timekeeping(Max) 175µA @ 2.97V ~ 5.5V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount

Overview

Description

DS1374U-33+ is a Dallas/Maxim real-time clock (RTC) IC with battery backup and an I2C-compatible serial interface. It keeps accurate calendar/time information (seconds, minutes, hours, day/date, month, year) and can generate alarms and timers, even while the main power is off, thanks to a backup supply (VBAT) and trickle-charge capability to recharge the backup source. The “-33+” suffix indicates 3.3V operation (and RoHS-compliant packaging). It typically includes on-chip RAM or NVRAM for data retention during power loss, and is designed for low-power, timekeeping-critical embedded applications. Common uses include data logging, power-failure clocks, wearables, and utility/metering devices. For exact specifications (voltage ranges, RAM size, alarm/timer features, package options), consult the DS1374U-33+ datasheet.

Pinout

- Pin count: 8 pins (DIP-8/SOIC-8).
- Function: DS1374U-33+ is a 3.3V serial real-time clock/calendar with battery-backed nonvolatile RAM (RTC + NV RAM); provides timekeeping from seconds to year using a 32.768 kHz crystal, with a serial interface.

Manufacturer

- Manufacturer: Dallas Semiconductor Corporation (often abbreviated DS), now part of Maxim Integrated (and later Analog Devices).
- What kind of company: A semiconductor company that designs and manufactures integrated circuits (MEMORY/RTCs and other timing/analog devices) for electronics.

Application

DS1374U-33+ is a real‑time clock with backup power and memory for time-stamped data. Common applications include:
- Data loggers and event time-stamping
- Industrial automation and process control
- Consumer electronics clocks and appliances
- Networking equipment for logs and scheduling
- Automotive instrumentation and telematics
- Smart meters and energy monitoring
- Portable/handheld devices needing accurate time reference
- Any system requiring reliable timekeeping during power loss

Package

DS1374U-33+ is in an 8-pin SOIC (small-outline) package; RoHS-compliant.

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