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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR PAR 28EDIP
- Series：-
- Package：Tube
- Mfr：Analog Devices Inc./Maxim Integrated
- Type：Clock/Calendar
- Features：Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer
- Memory Size：50B
- Time Format：HH:MM:SS:hh (12/24 hr)
- Date Format：YY-MM-DD-dd
- Interface：Parallel
- Voltage - Supply：4.5V ~ 5.5V
- Voltage - Supply, Battery：2.4V ~ 3.5V
- Current - Timekeeping (Max)：7mA @ 5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
- Package / Case：28-DIP Module (0.61", 15.49mm), 23 Leads
- Supplier Device Package：28-EDIP
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Overview
The DS1286I+ is a Real-Time Clock (RTC) integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It provides clock/calendar functionality with a parallel interface and is housed in a 28-EDIP package. The device operates on a main supply of 4.5V to 5.5V and supports battery backup between 2.4V and 3.5V. Key features include an alarm, leap year compensation, square wave output, 50 bytes of SRAM, and a watchdog timer. It maintains timekeeping current at a maximum of 7mA at 5V and functions within an operating temperature range of -40°C to 85°C.
Feature Summary
- Integrated clock/calendar with parallel interface
- 50 bytes of non-volatile SRAM for data storage
- Hardware alarm, leap year correction, and watchdog timer
- Square wave output capability
Applications
- Industrial systems requiring precise timekeeping
- Embedded devices needing non-volatile calendar data
- Equipment with watchdog timer requirements
Procurement Notes
Verify the specific suffix 'I+' against official documentation to confirm temperature grade and compliance status. Ensure the 28-EDIP through-hole package matches the target PCB layout. Confirm availability as distribution status may vary by region.
Selection Notes
Select this component when a parallel interface RTC with 50 bytes of SRAM is required. Ensure the design accommodates the 28-EDIP footprint and supports the 4.5V to 5.5V logic levels. Verify that the -40°C to 85°C industrial temperature range meets environmental specifications.
Part Context
The DS1286 series belongs to the family of real-time clock ICs from Maxim Integrated. This specific part number denotes the industrial temperature variant (-40°C to 85°C) in the 28-EDIP package. It shares core functionalities with other variants like the DS1286Y+, differing primarily in temperature rating and packaging.
Replacement Considerations
Check for direct pin-compatible replacements within the DS1286 family, such as the DS1286Y+ for commercial temperature ranges. Verify if newer generations offer equivalent functionality in different packages.
