DS1742W-120

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DS1742W-120

+物料清單

IC RTC CLK/CALENDAR PAR 24EDIP

  • 製造商類比設備股份有限公司/Maxim集成

  • 製造商部分 #DS1742W-120

  • 數據表 DS1742W-120 DataSheet

  • 有存貨3202

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規格

屬性 價值
Part Status Obsolete
DigiKey Programmable Not Verified
Type Clock/Calendar
Features Leap Year, NVSRAM, Y2K
Memory Size 2KB
Time Format HH:MM:SS (24 hr)
Date Format YY-MM-DD-dd
Interface Parallel
Voltage - Supply 2.97V ~ 3.63V
Current - Timekeeping (Max) 2mA @ 3.3V
Operating Temperature 0°C ~ 70°C
Mounting Type Through Hole
Package / Case 24-DIP Module (0.600", 15.24mm)
Supplier Device Package 24-EDIP
Base Product Number DS1742

概述

Description

The DS1742W-120 is a real-time clock (RTC) chip designed by Maxim Integrated. It features a battery-backed, non-volatile memory component that retains time and date information even during power outages. The device operates with a supply voltage of 2.0V to 5.5V and communicates via a I²C interface, making it suitable for various embedded applications.
Key features include:
- Accurate timekeeping with a typical precision of ±1 minute per month.
- Built-in oscillator for clock functions.
- Options for alarm and timer functionalities.
- Integrated SRAM for data storage with battery backup.
- Temperature compensation for enhanced reliability.
The DS1742W-120 is ideal for applications in consumer electronics, industrial equipment, and any device requiring timekeeping or scheduling capabilities. Its low power consumption and robust performance make it a preferred choice for designers looking to incorporate RTC functionality into their systems.

Equivalent

Equivalent products to the DS1742W-120 include the DS1742W-100, DS1742W-150, and other similar real-time clock (RTC) chips. These equivalents may vary in specifications like temperature range, power consumption, and clock frequency. Always verify compatibility with your specific application before making a substitution.

Features

The DS1742W-120 is a real-time clock (RTC) with an integrated non-volatile SRAM. Key features include:
1. Real-Time Clock: Maintains accurate timekeeping and calendar functions.
2. Non-Volatile SRAM: Provides 32 kbits of SRAM that retains data during power loss.
3. Battery Backup: Operates with a lithium battery, ensuring timekeeping during power outages.
4. I2C Interface: Supports easy communication with microcontrollers via a two-wire I2C interface.
5. Programmable Alarm: Includes alarms for time-based events.
6. Temperature Compensation: Offers improved accuracy over a range of temperatures.
7. Low Power Consumption: Designed for low energy use, ideal for battery-operated devices.
8. Clock Output: Provides a clock output signal for synchronization needs.
These features make the DS1742W-120 suitable for applications such as consumer electronics, industrial control systems, and any device requiring timekeeping functionality.

Pinout

The DS1742W-120 is a real-time clock (RTC) with 28 pins. It is designed for low-power applications and features a battery-backed timekeeping function. The pin functions include:
1. VCC: Power supply input.
2. GND: Ground connection.
3. SQW/INT: Square wave output or interrupt signal.
4. RST: Reset input.
5. SCL: I2C clock line.
6. SDA: I2C data line.
7. TP: Test pin (for factory use).
8. NC: No connection (unused pins).
9. Vbat: Backup battery input.
10. X1/X2: Crystal oscillator connections.
The DS1742W-120 provides timekeeping functions, alarms, and a programmable square wave output, making it suitable for various applications needing real-time tracking.

Manufacturer

The DS1742W-120 is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was known for its focus on designing and producing analog and mixed-signal integrated circuits. The company specialized in a variety of semiconductor products, including data converters, amplifiers, and microcontrollers, as well as real-time clocks, like the DS1742W-120.
Analog Devices, Inc., the parent company, is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, Analog Devices serves a wide range of industries, including communications, automotive, healthcare, and industrial automation. The company emphasizes innovation in signal processing technology and is well-regarded for its advanced solutions in data acquisition and signal conditioning.
Overall, the DS1742W-120 exemplifies Maxim Integrated's commitment to high-quality products serving the needs of electronic design engineers across various applications.

Application

The DS1742W-120 is a real-time clock (RTC) with a built-in battery backup, primarily used in applications that require accurate timekeeping and low power consumption. Common application areas include:
1. Consumer Electronics: Digital clocks, appliances, and remote controls.
2. Industrial Equipment: Time-stamping in data loggers and process control systems.
3. Automotive: Dashboard clocks and event recorders.
4. Telecommunications: Network devices needing time synchronization.
5. Computers and Peripherals: Motherboards and storage devices for timekeeping.
6. Medical Devices: Monitoring equipment that logs time-sensitive data.
Its low power and high reliability make it suitable for various devices requiring time management.

Package

The DS1742W-120 is packaged in a 28-pin 300-mil DIP (Dual In-line Package) format. This package type allows for easy integration into circuits, providing a reliable connection for the device's functionalities.

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