Integrated Circuits (ICs)

BQ3285LSS

Obsolete

Texas Instruments

IC REAL TIME CLOCK 24-QSOP

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Integrated Circuits (ICs)

BQ3285LSS

Obsolete

Texas Instruments

IC REAL TIME CLOCK 24-QSOP

Deep-Dive with AI

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	BQ3285LSS

Features	Alarm, Square Wave Output, Leap Year, Daylight Savings, NVSRAM
Interface	Parallel
Memory Size	242 B
Mounting Type	Surface Mount
Package / Case	24-SSOP
Package / Case [custom]	0.154 ", 3.9 mm
Supplier Device Package	24-SSOP
Time Format	HH:MM:SS (12/24 hr)
Type	Clock/Calendar
Voltage - Supply [Max]	3.6 V
Voltage - Supply [Min]	2.7 V
Voltage - Supply, Battery [Max]	4 V
Voltage - Supply, Battery [Min]	2.4 V

BQ3285E Series

RTC IC with 242x8 NVSRAM Alarm Wake-up

Part	Mounting Type	Interface	Operating Temperature [Max]	Operating Temperature [Min]	Features	Type	Package / Case	Package / Case	Package / Case	Memory Size	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Time Format	Package / Case [custom]	Current - Timekeeping (Max) [Max]	Voltage - Supply, Battery [Max]	Voltage - Supply, Battery [Min]	Package / Case [custom]
Texas Instruments BQ3285P-SB2E3	Through Hole	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-DIP	0.6 in	15.24 mm	114 B	4.5 V	5.5 V	24-PDIP	HH:MM:SS (12/24 hr)
Texas Instruments BQ3285ESSTR	Surface Mount	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-SSOP			242 B	4.5 V	5.5 V	24-SSOP	HH:MM:SS (12/24 hr)	0.154 " 3.9 mm	300 µA
Texas Instruments BQ3285LFSS-A1TRG4	Surface Mount	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-SSOP			242 B	2.7 V	5.5 V	24-SSOP	HH:MM:SS (12/24 hr)	0.154 " 3.9 mm		4 V	2.4 V
Texas Instruments BQ3285ESTR	Surface Mount	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-SOIC			242 B	4.5 V	5.5 V	24-SOIC	HH:MM:SS (12/24 hr)	7.5 mm	300 µA			0.295 in
Texas Instruments BQ3285P-SB2	Through Hole	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-DIP	0.6 in	15.24 mm	114 B	4.5 V	5.5 V	24-PDIP	HH:MM:SS (12/24 hr)
Texas Instruments BQ3285EP	Through Hole	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-DIP	0.6 in	15.24 mm	242 B	4.5 V	5.5 V	24-PDIP	HH:MM:SS (12/24 hr)		300 µA
Texas Instruments BQ3285LDSS	Surface Mount	Parallel	70 °C	0 °C	Alarm Daylight Savings NVSRAM	Clock/Calendar	24-SSOP			242 B	2.7 V	5.5 V	24-SSOP	HH:MM:SS (12/24 hr)	0.154 " 3.9 mm		4 V	2.4 V
Texas Instruments BQ3285S-SB2	Surface Mount	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-SOIC			114 B	4.5 V	5.5 V	24-SOIC	HH:MM:SS (12/24 hr)	7.5 mm				0.295 in
Texas Instruments BQ3285LSS	Surface Mount	Parallel			Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-SSOP			242 B	2.7 V	3.6 V	24-SSOP	HH:MM:SS (12/24 hr)	0.154 " 3.9 mm		4 V	2.4 V
Texas Instruments BQ3285S-SB2TRG4	Surface Mount	Parallel	70 °C	0 °C	Alarm Daylight Savings Leap Year NVSRAM Square Wave Output	Clock/Calendar	24-SOIC			114 B	4.5 V	5.5 V	24-SOIC	HH:MM:SS (12/24 hr)	7.5 mm				0.295 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	104	$ 2.89
		104	$ 2.89
		110	$ 2.74

Description

General part information

BQ3285E Series

The CMOS bq3285E/L is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. The bq3285L supports 3V systems. Other bq3285E/L features include three maskable interrupt sources, square-wave output, and 242 bytes of general nonvolatile storage.

A 32.768kHz output is available for sustaining power-management activities. Wake-up capability is provided by an alarm interrupt, which is active in battery-backup mode.

The bq3285E/L write-protects the clock, calendar, and storage registers during power failure. A backup battery then maintains data and operates the clock and calendar.

Documents

Technical documentation and resources

No documents available