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BQ3285ESTR Texas Instruments BQ3285ESTR is a real time clock with parallel interface, 242 bytes of NVSRAM, and alarm features. It operates from 2.5V to 4V and comes in a 24-SOIC package.
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BQ3285ESTR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
Texas Instruments BQ3285ESTR is a real time clock with parallel interface, 242 bytes of NVSRAM, and alarm features. It operates from 2.5V to 4V and comes in a 24-SOIC package.
✓ Total Stock: 100 pcs

BQ3285ESTR Available from 1 distributor

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✓ Non-Authorised
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Optech Co.,Limited ✓
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100 pcs
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100 pcs On Request 1 On Request On Request 18+ On Request On Request
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BQ3285ESTR 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
Supplier Device Package
Time Format
Type
Voltage
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BQ3285ESTR Description

Short technical summary and product information.

The Texas Instruments BQ3285ESTR is a low-power CMOS real time clock (RTC) providing time-of-day clock and 100-year calendar functions with alarm features. It includes 242 bytes of general nonvolatile storage (NVSRAM) for data retention during power loss.

 

Key specifications include a parallel interface, support for 12/24 hour time format and YY-MM-DD-dd date format, and a typical timekeeping current of 300 µA at 5V. The device operates over a supply voltage range of 2.5V to 4V and a temperature range of 0°C to 70°C.

 

The BQ3285ESTR is designed for surface mount assembly in a 24-SOIC package (0.295" width, 7.50mm). It is functionally compatible with the DS1285 and closely matches the MC146818A pin configuration, making it suitable for IBM AT-compatible computers and other applications requiring accurate timekeeping.

BQ3285ESTR Quick Information

Product Type: Real Time Clock
Canonical Name: BQ3285ESTR Real Time Clock
Subcategory: Clock/Calendar

BQ3285ESTR Compliance

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

BQ3285ESTR Features

  • Parallel interface real time clock.
  • 242 bytes of nonvolatile storage.
  • Alarm, daylight savings, leap year support.
  • Operates from 2.5V to 4V supply.
  • Surface mount 24-SOIC package.

BQ3285ESTR Applications

  • IBM AT-compatible computer clock/calendar.
  • Embedded systems requiring timekeeping.
  • Industrial control with battery backup.
  • Power management wake-up applications.

BQ3285ESTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the BQ3285ESTR?

The supply voltage range is 2.5V to 4V.

What is the operating temperature range of the BQ3285ESTR?

The operating temperature range is 0°C to 70°C.

What package does the BQ3285ESTR come in?

The BQ3285ESTR is available in a 24-SOIC surface mount package (0.295 inch, 7.50mm width).

Does the BQ3285ESTR have non-volatile memory?

Yes, it includes 242 bytes of non-volatile SRAM (NVSRAM).

What interface does the BQ3285ESTR use?

It uses a parallel interface.

What is the typical timekeeping current of the BQ3285ESTR?

The typical timekeeping current is 300 µA at 5V.

Is the BQ3285ESTR RoHS compliant?

The RoHS status is listed as RoHS3 Compliant, but this is unverified and should be confirmed from official sources.

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