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BQ3285LDSS Real Time Clock IC with 242 bytes of nonvolatile storage, parallel interface, and 3V operating supply. Packaged in 24-pin SSOP for surface mount applications.
Mfr Part #:

BQ3285LDSS

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
Real Time Clock IC with 242 bytes of nonvolatile storage, parallel interface, and 3V operating supply. Packaged in 24-pin SSOP for surface mount applications.
✓ Total Stock: 8,500 pcs

BQ3285LDSS Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
8,500 pcs
On Request
8500 pcs On Request 1 On Request On Request 00+ On Request On Request
HK XINYUANXIN ELECTRONIC TECH LIMITED ✓
Non-Authorised Inventory information
On Request
On Request
On Request On Request 1 On Request On Request On Request On Request On Request
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BQ3285LDSS Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Features
Interface
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BQ3285LDSS Description

Short technical summary and product information.

The BQ3285LDSS is a low-power CMOS real-time clock (RTC) from Texas Instruments, providing time-of-day clock and 100-year calendar with alarm features. It includes 242 bytes of general nonvolatile storage and is fully compatible with IBM AT-compatible computers and other systems requiring accurate timekeeping.

 

Key electrical specifications include a supply voltage range of 2.7V to 5.5V, with typical operation at 3V. The device draws 100 µA typical at 3V and has a battery backup current of less than 0.55 µA. It features a 32.768kHz output pin, selectable Intel or Motorola bus timing, and an ACPI-compliant day-of-month alarm. The alarm interrupt remains active in battery-backup mode for system wake-up capability.

 

The BQ3285LDSS is packaged in a 24-pin SSOP (0.154", 3.90mm width) for surface mount assembly. It operates over a temperature range of 0°C to 70°C and is RoHS compliant. The device supports both 12-hour and 24-hour time formats and includes daylight savings adjustment.

BQ3285LDSS Quick Information

Product Type: Real Time Clock (RTC)
Canonical Name: BQ3285LDSS Real Time Clock with 242B NVSRAM, Parallel Interface, 24-SSOP
Subcategory: Clock/Timing ICs

BQ3285LDSS Compliance

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

BQ3285LDSS Features

  • 242 bytes of nonvolatile storage.
  • Parallel interface for easy integration.
  • ACPI-compliant with day-of-month alarm.
  • Ultra-low battery backup current (<0.55µA).
  • Operates from 2.7V to 5.5V supply.

BQ3285LDSS Applications

  • Used in computer motherboards for timekeeping.
  • Ideal for embedded systems requiring RTC.
  • Suitable for data logging with NVSRAM.
  • ACPI-compliant for power management systems.

BQ3285LDSS FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the BQ3285LDSS?

The operating supply voltage range is 2.7V to 5.5V, with a typical voltage of 3V.

What package does the BQ3285LDSS come in?

It is available in a 24-SSOP (0.154", 3.90mm Width) surface mount package.

What is the operating temperature range?

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

Is the BQ3285LDSS RoHS compliant?

Yes, it is RoHS3 compliant and lead free.

What is the memory size of the BQ3285LDSS?

It has 242 bytes of general nonvolatile storage (NVSRAM).

What interface does the BQ3285LDSS use?

It uses a parallel interface.

What features does the BQ3285LDSS include?

It includes alarm, daylight savings, NVSRAM, ACPI compliance, 32.768kHz output, battery backup, and selectable Intel/Motorola bus timing.

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