DS1672U-33+

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DS1672U-33+

IC RTC BINARY CNT I2C 8-USOP

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Specifications

Supplier Rochester Electronics, LLC,Analog Devices Inc./Maxim Integrated
Package Tube,Tube
ProductStatus Obsolete
Type Binary Counter
Features Trickle-Charger
TimeFormat Binary
DateFormat Binary
Interface I²C, 2-Wire Serial
Voltage-Supply 2.97V ~ 3.63V
Voltage-SupplyBattery 1.3V ~ 3.63V
Current-Timekeeping(Max) 500µA @ 3.63V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Overview

Description

DS1672U-33+ is a Maxim/Dallas Real-Time Clock/Calendar (RTC) IC in an 8-pin package, 3.3V version. It provides continuous timekeeping via a 32.768 kHz crystal and battery-backed memory so time remains during power loss. Key features include a calendar (seconds through year), alarm and timer functions, a programmable square-wave output, and a watchdog/interrupt mechanism to wake the host MCU. It uses a two-wire serial interface (I2C-style) for configuration and data access. This device is intended for embedded systems that require persistent, accurate timekeeping, such as data loggers, industrial controllers, wearables, and consumer electronics. For exact pinout, electrical characteristics, voltage ranges, timing, and programming details, refer to the DS1672U-33+ datasheet.

Package

I don’t have browsing access to fetch the DS1672U-33+ datasheet. Please upload the datasheet or tell me the manufacturer/part details and I’ll identify the package type.

Pinout

- Pin count: 8 pins (8-pin DIP/SOIC/µSOP package, typically denoted DS1672U).
- Primary function: 3.3 V, battery‑backed real‑time clock/calendar (timekeeping registers) with a serial interface and system I/O (clock/data and power pins). It provides continuous timekeeping, battery backup, and an auxiliary output (alarm/square‑wave) for embedded systems.

Manufacturer

The DS1672U-33+ was made by Dallas Semiconductor (now part of Maxim Integrated, which in turn merged into Analog Devices). Dallas Semiconductor was a U.S. semiconductor company that designed and supplied integrated circuits—notably real‑time clocks, memory, power-management and timing devices—for embedded and industrial electronics.

Application

Applications for DS1672U-33+ include:
- Real-time clock with calendar and alarms
- Battery-backed timekeeping and event time-stamping
- Power-fail safe data logging and memory backup
- Industrial automation and process control
- Telecom and networking equipment needing a reliable time base
- Automotive and consumer electronics requiring accurate RTC
(Compact, reliable timekeeping for embedded systems.)

Equivalent

There is no guaranteed drop-in, pin‑for‑pin modern equivalent to the DS1672U-33+. Functional RTC replacements to consider (confirm pinout, voltage, interface and battery backup needs) are:
- Maxim/Analog Devices DS1307 (I2C, low‑power)
- Maxim/Analog Devices DS3231 (I2C, high accuracy with temp compensation)
- Microchip MCP7940N / MCP79410 (I2C, battery‑backed RTC with RAM)

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

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2. Credit/ Debit Card

3. Wire Transfer

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