The DS1746-70+ is a highly advanced and fully functional real-time clock/calendar and nonvolatile static RAM. With its year-2000-compliant design, this product ensures accurate timekeeping and data storage without any risk of Y2K-related issues. The byte-wide interface provides convenient user access to all registers, allowing for easy manipulation of the RTC information and control bits. The RTC registers contain essential data, such as century, year, month, date, day, hours, minutes, and seconds, all in 24-hour BCD format. Additionally, the DS1746 automatically corrects for leap years and monthly date adjustments, ensuring precision in timekeeping.
Analog Devices / Maxim Integrated DS1746-70+’s Features
The DS1746 - 70+ from Analog Devices/Maxim Integrated is a highly integrated component with several notable features. It combines an NV SRAM, real - time clock, crystal, power - fail control circuit, and lithium energy source in one device. The clock registers can be accessed just like the static RAM, and it has a century byte register for Y2K compliance. It is fully nonvolatile, capable of operating for over 10 years without external power. The time - related data such as century, year, month, etc., are stored in BCD - coded format with automatic leap year compensation up to the year 2100. A battery voltage - level indicator flag is included for monitoring the lithium battery status. The device offers power - fail write protection with a ±10% VCC power supply tolerance. It comes in a 32 - pin DIP module, following the standard JEDEC byte - wide 128k x 8 static RAM pinout. It also has a power - on reset output and is pin - for - pin compatible with other DS174xP timekeeping RAMs. Additionally, it can operate in the commercial temperature range of 0°C to +70°C.
Analog Devices / Maxim Integrated DS1746-70+’s Applications
The Analog Devices/Maxim Integrated DS1746 - 70+ has a wide range of applications. In industrial control systems, its real - time clock function is crucial for precisely scheduling operations. For example, in a manufacturing plant, it can be used to time - stamp production events, enabling accurate tracking of the manufacturing process, from the start of a production batch to quality control checks. In data logging systems, the integrated non - volatile SRAM and real - time clock work in tandem. The SRAM stores logged data, while the clock provides accurate time references for each data entry. This is highly beneficial in environmental monitoring, where sensors collect data at different times. The DS1746 - 70+ ensures that the data is time - stamped correctly, allowing for in - depth analysis of environmental changes over time. It is also well - suited for backup power and time - keeping in critical systems. In telecommunications equipment, during power outages, the lithium energy source and power - fail control circuit keep the time and important configuration data intact in the non - volatile SRAM. Once power is restored, the system can resume operation without losing its time - based settings or crucial data.
Analog Devices / Maxim Integrated DS1746-70+’s Attributes
Product Category |
Real Time Clock |
Shipping Restrictions |
Available in USA only. |
RoHS |
Details |
Mounting Style |
Through Hole |
Package / Case |
EDIP-32 |
RTC Bus Interface |
Parallel |
Date Format |
YY-MM-DD-dd |
Time Format |
HH:MM:SS |
Battery Backup Switching |
Integrated Battery |
RTC Memory Size |
128 kB |
Supply Voltage - Max |
5.5 V |
Supply Voltage - Min |
4.5 V |
Minimum Operating Temperature |
0 C |
Maximum Operating Temperature |
+ 70 C |
Brand |
Analog Devices / Maxim Integrated |
Function |
Calendar, Clock, NV Timekeeping RAM |
Product Type |
Real Time Clocks |
Series |
DS1746 |
Factory Pack Quantity |
11 |
Subcategory |
Clock & Timer ICs |
Part # Aliases |
DS1746 90-17460+070 |
Unit Weight |
0.520511 oz |
Analog Devices / Maxim Integrated DS1746-70+’s Category-Real Time Clocks ICS
Real Time Clocks Integrated Circuits (ICs) play a pivotal role in modern electronics. These small yet mighty components are designed to keep accurate track of time, much like a traditional clock but with enhanced precision and functionality tailored for digital systems. One of the primary functions of Real Time Clocks ICs is to provide a stable time reference. They are crucial in devices where time - stamping of events is necessary, such as in data loggers that record sensor readings at specific intervals. In computer systems, they ensure that the operating system can accurately timestamp files and events, enabling efficient data management and synchronization across different processes.
These ICs also often come with features like calendar functionality, which can handle dates, including leap years, with ease. This is highly useful in applications like scheduling systems, where precise date and time information is required to trigger actions. Additionally, many Real Time Clocks ICs support battery backup. This ensures that the timekeeping function persists even when the main power source is interrupted, maintaining continuous and accurate timekeeping.
Analog Devices / Maxim Integrated DS1746 - 70+ is a prime example in this domain. It offers a comprehensive set of features. With its parallel RTC bus interface, it allows for efficient data transfer related to time and calendar information. The device can handle date and time formats like YY - MM - DD - dd and HH:MM:SS respectively. Boasting a 128 kB RTC Memory Size, it can store additional time - related data or other relevant information. With a supply voltage range from 4.5V to 5.5V and an operating temperature range from 0°C to +70°C, it provides reliable performance in a variety of conditions. Its integrated battery backup switching ensures seamless timekeeping, making it an ideal choice for applications that demand accurate and continuous time management.
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