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Texas Instruments DP8573AV/NOPB — Discrete Semiconductors

DP8573AV/NOPB RTC Clock/Calendar, Parallel, 28-PLCC, Active

MPNDP8573AV/NOPB
End of Life

Texas Instruments DP8573AV/NOPB Clock/Calendar RTC, Parallel interface, YY-MM-DD-dd / HH:MM:SS:hh formats, Alarm, Leap Year, 4.5V-5.5V supply, -40°C~85°C, 28-PLCC (J-Lead), Tube.

$22.32Ref. price · indicative, final on quote
Texas Instruments DP8573AV/NOPB datasheet (PDF)
Packaging28-LCC (J-Lead)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DP8573AV/NOPB specifications
ParameterValue
TypeClock/Calendar
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Voltage - supply, battery2.2V ~ 5.1V
Current - timekeeping1µA @ 5V
InterfaceParallel
Operating temperature-40°C ~ 85°C
PackageTube
FeaturesAlarm, Leap Year
Date formatYY-MM-DD-dd
Time formatHH:MM:SS:hh (12/24 hr)
Case28-LCC (J-Lead)

Product details

RTC for industrial timing — parallel interface, battery-backed

The Texas Instruments DP8573AV/NOPB is a real-time clock/calendar IC in a 28-PLCC surface-mount package. It tracks time in HH:MM:SS:hh format (12/24 hour selectable) and date in YY-MM-DD-dd, with integrated alarm and leap-year compensation. The parallel interface suits designs where a microcontroller reads and writes time registers over a shared address/data bus — common in industrial controllers, embedded instrumentation, and telecom line cards that need a hardware timebase independent of the main processor.

Frequently asked questions

Does DP8573AV/NOPB have a battery backup feature?

Yes — it has a dedicated battery-supply pin (2.2V to 5.1V) that maintains timekeeping when the main supply is off. Timekeeping current is a maximum of 1 µA at 5V, so a small coin cell provides long backup life.

What are the alternatives to DP8573AV/NOPB?

This part is a parallel-interface RTC in a 28-PLCC package. Other parallel RTCs in similar footprints exist from various manufacturers, but no pin-compatible second source is listed in the available records. Verify footprint and register map against any candidate before substitution.