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The DS1374U-33+T&R is a real-time clock (RTC) module manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

Specifications:

• Manufacturer: Maxim Integrated
• Part Number: DS1374U-33+T&R
• Package: 8-pin µSOP (Tape & Reel packaging)
• Supply Voltage: 2.97V to 3.63V (3.3V operation)
• Interface: I²C (Two-wire serial interface)
• Timekeeping Accuracy: ±2ppm (±0.1728 seconds/day) from 0°C to +40°C
• Operating Temperature Range: -40°C to +85°C
• Battery Backup Support: Yes (for continuous timekeeping)
• Alarm Function: Programmable with interrupt output
• Watchdog Timer: Configurable timeout period
• Low Power Consumption: Typically 400nA in battery backup mode

Descriptions:

• The DS1374U-33+T&R is a low-power RTC with an integrated oscillator, providing accurate timekeeping and calendar functions.
• It includes a 32-bit binary counter for seconds counting and supports I²C communication for easy microcontroller interfacing.
• Designed for battery-backed applications, it ensures timekeeping continuity during power loss.

Features:

• I²C Serial Interface (up to 400kHz)
• Battery-Backed Timekeeping
• Programmable Alarm & Interrupt
• Watchdog Timer with Configurable Timeout
• Low Power Consumption (ideal for battery-powered systems)
• Small Footprint (µSOP-8 Package)
• Industrial Temperature Range Support (-40°C to +85°C)

This device is commonly used in embedded systems, industrial controls, and IoT applications requiring reliable timekeeping.