DS12885+

$10.80

Description：IC RTC CLK/CALENDAR PAR 24DIP
Series：-

SKU:2f550a3849b0 Category: Real Time Clocks Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR PAR 24DIP
Series：-
Package：Tube
Mfr：Analog Devices Inc./Maxim Integrated
Type：Clock/Calendar
Features：Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
Memory Size：114B
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：Parallel
Voltage - Supply：4.5V ~ 5.5V
Voltage - Supply, Battery：2.5V ~ 4V
Current - Timekeeping (Max)：15mA @ 4.5V ~ 5.5V
Operating Temperature：0°C ~ 70°C
Mounting Type：Through Hole
Grade：-
Qualification：-
Package / Case：24-DIP (0.600", 15.24mm)
Supplier Device Package：24-PDIP

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DS12885+

Overview

The DS12885+ is a real-time clock (RTC) and calendar IC manufactured by Analog Devices Inc./Maxim Integrated. It provides timekeeping for seconds, minutes, hours, day, date, month, and year with leap year compensation through 2099. The device includes 114 bytes of battery-backed static RAM and supports both Intel and Motorola multiplexed bus interfaces. It operates on a primary supply of 4.5V to 5.5V and a backup supply of 2.5V to 4V, with a maximum timekeeping current of 15mA at 5.5V. The component is housed in a 24-DIP package and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

Drop-in replacement for IBM AT computer clock/calendar
114 bytes of battery-backed NVSRAM
Multiplexed byte-wide interface supporting Intel and Motorola modes
Automatic power-fail detect and switch circuitry

Applications

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

Procurement Notes

Verify the specific package variant required, as the DS12885 family includes surface mount options like PLCC and TQFP alongside the standard DIP. Confirm that the external 32.768kHz crystal meets the specified load capacitance of 6pF for proper oscillator startup. Ensure the VBAT pin is connected to a lithium coin cell or grounded if backup is not utilized, adhering to the 2.5V to 4V input limits.

Selection Notes

Select the DS12885+ when a parallel multiplexed interface is required for legacy system compatibility. This model is suitable for designs needing integrated calendar logic with automatic month-end adjustments. Consider alternative packages such as the DS12885T (TQFP) or DS12885Q+ (PLCC) if surface-mount technology is preferred over through-hole DIP mounting.

Part Context

The DS12885+ belongs to the DS12885/DS12887 family of real-time clocks designed as direct replacements for the earlier DS1285 and DS1287 models. While the DS12887 integrates an internal crystal and battery, the DS12885 requires external components for these functions. The '+' suffix indicates compliance with RoHS standards.

Replacement Considerations

Direct functional equivalents include the DS12885T and DS12885Q+. For industrial temperature ranges (-40°C to +85°C), consider the DS12885SN+ or DS12885QN+ variants.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.