DS1374C-18# Encyclopedia Entry

Product Overview

Category

The DS1374C-18# belongs to the category of real-time clock (RTC) integrated circuits.

Use

It is primarily used for timekeeping and synchronization purposes in various electronic devices.

Characteristics

• High accuracy timekeeping
• Low power consumption
• Small form factor
• Wide operating temperature range

Package

The DS1374C-18# is available in a compact surface-mount package.

Essence

The essence of DS1374C-18# lies in its ability to provide accurate timekeeping functionality with minimal power consumption.

Packaging/Quantity

The DS1374C-18# is typically packaged in reels or tubes, with a quantity of 250 or 1000 units per package.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Timekeeping Accuracy: ±2ppm
• Operating Temperature Range: -40°C to +85°C
• Clock Frequency: 32.768kHz
• Battery Backup Voltage: 1.8V to 5.5V
• I2C Interface

Detailed Pin Configuration

The DS1374C-18# features the following pin configuration:

1. VCC - Power supply input
2. GND - Ground connection
3. SDA - I2C data line
4. SCL - I2C clock line
5. SQW/INT - Square wave output or interrupt output
6. RST - Reset input
7. X1 - Crystal oscillator input
8. X2 - Crystal oscillator output
9. VBAT - Battery backup voltage input

Functional Features

• Real-time clock with calendar functionality
• Alarm and timer functions
• Battery backup support for uninterrupted timekeeping
• Programmable square wave output
• I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

• High accuracy timekeeping ensures precise synchronization.
• Low power consumption extends battery life in portable devices.
• Compact form factor allows for space-efficient designs.
• Wide operating temperature range enables usage in various environments.

Disadvantages

• Limited memory capacity for storing additional data.
• Lack of advanced features compared to more specialized RTCs.
• Reliance on an external crystal oscillator for clock accuracy.

Working Principles

The DS1374C-18# utilizes a combination of an internal oscillator and an external crystal oscillator to maintain accurate timekeeping. It operates by counting the oscillations of the crystal, which generates a stable frequency. The integrated circuit then converts these oscillations into the current date and time information.

Detailed Application Field Plans

The DS1374C-18# finds applications in various fields, including:

1. Consumer Electronics: Used in digital cameras, smartphones, and wearable devices for accurate timekeeping and synchronization.
2. Industrial Automation: Integrated into control systems and data loggers to timestamp events and monitor process timings.
3. Automotive: Employed in vehicle dashboard displays and infotainment systems for reliable timekeeping and scheduling functions.
4. Medical Devices: Utilized in medical equipment such as patient monitors and infusion pumps to ensure accurate time-based operations.

Detailed and Complete Alternative Models

1. DS3231 - Offers higher timekeeping accuracy and additional memory capacity.
2. PCF8563 - Provides similar functionality with lower power consumption.
3. MCP7940N - Features a built-in temperature sensor for enhanced environmental monitoring.

In conclusion, the DS1374C-18# is a real-time clock integrated circuit that offers high accuracy timekeeping, low power consumption, and a compact form factor. Its functional features, advantages, and application field plans make it suitable for various electronic devices. Alternative models such as DS3231, PCF8563, and MCP7940N provide additional options with different capabilities.