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DS1305 The DS1305 is a serial alarm real-time clock from Analog Devices. It manages all timekeeping functions and includes 96 bytes of battery-backed NV RAM.
Mfr Part #:

DS1305

Available from 2 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The DS1305 is a serial alarm real-time clock from Analog Devices. It manages all timekeeping functions and includes 96 bytes of battery-backed NV RAM.
✓ Total Stock: 55,200 pcs

DS1305 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
45,200 pcs
On Request
45200 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
10,000 pcs
On Request
10000 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

DS1305 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Date Format
Features
Interface
Memory Size
Mounting Type
Operating Temperature
Package / Case
Supplier Device Package
Tape & Reel
Time Format
Type
Voltage
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DS1305 Description

Short technical summary and product information.

The DS1305 by Analog Devices is a serial alarm real-time clock IC that manages all timekeeping functions, including seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2100. It features 96 bytes of battery-backed NV RAM for data storage and two time-of-day alarms.

 

This clock operates with a standard serial port interface, supporting SPI modes 1 and 3, or a standard 3-wire interface. It offers burst mode for reading/writing successive addresses in clock/RAM. The device supports dual-power supply pins for primary and backup power, with an optional trickle charge output for the backup supply. It operates within a voltage range of 2.0V to 5.5V.

 

The DS1305 is available in a 16-DIP package and a 20-TSSOP package, minimizing required space. It supports an optional industrial temperature range of -40°C to +85°C, making it suitable for a wide range of applications. The device is UL recognized.

DS1305 Quick Information

Product Type: Real Time Clock
Canonical Name: DS1305 Serial Alarm Real-Time Clock
Subcategory: Real Time Clocks

DS1305 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

DS1305 Features

  • Manages all timekeeping functions.
  • 96-byte battery-backed NV RAM.
  • Two programmable time-of-day alarms.
  • Supports SPI and 3-wire interfaces.
  • 2.0V to 5.5V operation.

DS1305 Applications

  • Ideal for battery-backed timekeeping.
  • Suitable for systems requiring alarms.
  • Used in applications needing data storage.
  • Supports wide temperature ranges.

DS1305 FAQs

5 frequently asked questions generated from this part’s specifications.
What are the key features of the DS1305 real-time clock?

The DS1305 features complete timekeeping management, 96 bytes of battery-backed NV RAM, two time-of-day alarms, and supports SPI or 3-wire interfaces.

What is the operating voltage range for the DS1305?

The DS1305 operates from 2V to 5.5V.

What package options are available for the DS1305?

The DS1305 is available in a 16-DIP (300 mils) package and a 20-TSSOP (173 mils) package.

What is the operating temperature range for the DS1305?

The DS1305 has an operating temperature range of 0°C to 70°C, with an optional industrial range of -40°C to +85°C.

Does the DS1305 have non-volatile RAM?

Yes, the DS1305 includes 96 bytes of battery-backed NV RAM for data storage.

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