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DS1687-3IND

IC RTC CLK/CALENDAR PAR 24-EDIP

Product Category: Real Time Clocks
Mfr. Part #
DS1687-3IND
Manufacturer: Maxim Integrated
Package: 24-DIP Module (0.600", 15.24mm)
Lead Free Status /RoHS Status:
Data Sheet: DS1687-3IND Datasheet
Inventory: In Stock

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Mfr. Part #: DS1687-3IND

Specifications
Product Details

Specifications

Manufacturer Maxim Integrated

Product Category Real Time Clocks

Series -

Type Clock/Calendar

Packaging Tube

Package-Case 24-DIP Module (0.600", 15.24mm)

Operating-Temperature -40Â°C ~ 85Â°C

Mounting-Type Through Hole

Features Alarm, NVSRAM, Square Wave Output, Y2K

Interface Parallel

Voltage-Supply 2.7 V ~ 3.7 V

Supplier-Device-Package 24-EDIP

Memory Capacity 242B

Time-Format HH:MM:SS (12/24 hr)

Date-Format YY-MM-DD-dd

Voltage-Supply-Battery 2.5 V ~ 3.7 V

Current-Timekeeping-Max 2mA @ 3V

Product Details

DETAILED DESCRIPTION

The DS1685/DS1687 are real-time clocks (RTC) designed as successors to the industry-standard DS1285, DS1385, DS1485, and DS1585 PC RTCs. These devices provide the industry-standard DS1285 clock function with either +3.0V or +5.0V operation. The DS1685 also incorporates a number of enhanced features including a silicon serial number, power-on/off control circuitry, 242 bytes of user NV SRAM, and 32.768kHz output for sustaining power management activities.

FEATURES

Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as: Y2K Compliant
â– +3V or +5V Operation
â– 64-Bit Silicon Serial Number
â– Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure
â– 32kHz Output for Power Management
â– Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal
â– SMI Recovery Stack
â– 242 Bytes Battery-Backed NV RAM
â– Auxiliary Battery Input
â– RAM Clear Input
â– Century Register
â– Date Alarm Register
â– Compatible with Existing BIOS for Original DS1287 Functions
â– Available as Chip (DS1685) or Stand-Alone Encapsulated DIP (EDIP) with Embedded Battery and Crystal (DS1687)
â– Timekeeping Algorithm Includes Leap-Year Compensation Valid Through 2099
â– Underwriters Laboratory (UL) Recognized

APPLICATIONS

Embedded Systems
Utility Meters
Security Systems
Network Hubs, Bridges, and Routers

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Mfr. Part #: DS1687-3IND