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DS1305E The DS1305E is a serial alarm real-time clock from Analog Devices / Maxim Integrated. It features a clock/calendar function with SPI interface and 96 bytes of NV RAM.
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DS1305E

Available from 3 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The DS1305E is a serial alarm real-time clock from Analog Devices / Maxim Integrated. It features a clock/calendar function with SPI interface and 96 bytes of NV RAM.
✓ Total Stock: 32,723 pcs

DS1305E Available from 3 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
25,829 pcs
On Request
25829 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
4,700 pcs
On Request
4700 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
2,194 pcs
On Request
2194 pcs On Request 1 On Request On Request 1710+ 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.

DS1305E Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
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Interface
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Operating Temperature
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DS1305E Description

Short technical summary and product information.

The DS1305E is a serial alarm real-time clock IC manufactured by Analog Devices / Maxim Integrated. It provides complete timekeeping functions, including seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2100. The device includes 96 bytes of battery-backed NV RAM for data storage and two time-of-day alarms.

 

This real-time clock IC supports standard serial port interfaces, including SPI modes 1 and 3, and a standard 3-wire interface. It operates over a voltage range of 2.0V to 5.5V and features dual-power supply pins for primary and backup power, with an optional trickle charge output for the backup supply. The DS1305E is housed in a compact 20-pin TSSOP package, minimizing required board space.

 

Designed for a wide range of applications, the DS1305E is suitable for systems requiring accurate timekeeping and data storage. Its features, such as leap year correction and programmable alarms, make it a versatile component for embedded systems. The device is available in a 0°C to +70°C operating temperature range and is recognized by Underwriters Laboratory (UL®).

DS1305E Quick Information

Product Type: Real Time Clock
Canonical Name: DS1305E Serial Alarm Real-Time Clock
Subcategory: Clock/Calendar

DS1305E Compliance

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

DS1305E Features

  • Manages all timekeeping functions including year.
  • Includes 96-byte battery-backed NV RAM.
  • Supports SPI and 3-wire serial interfaces.
  • Operates from 2.0V to 5.5V supply.
  • Housed in a 20-pin TSSOP package.

DS1305E Applications

  • Ideal for embedded timekeeping systems.
  • Suitable for data logging applications.
  • Used in systems requiring alarm functions.
  • Supports leap year compensation up to 2100.

DS1305E FAQs

4 frequently asked questions generated from this part’s specifications.
What are the key features of the DS1305E real-time clock?

The DS1305E features complete timekeeping functions, 96 bytes of battery-backed NV RAM, two time-of-day alarms, SPI interface, and dual power supply pins for backup.

What is the operating voltage range for the DS1305E?

The DS1305E operates within a voltage range of 2.0V to 5.5V.

What package type is the DS1305E available in?

The DS1305E is available in a 20-TSSOP package.

What is the operating temperature range for the DS1305E?

The DS1305E has an operating temperature range of 0°C to 70°C.

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