DP8573AVX/NOPB Equivalent & Substitute Parts

Part Overview

The DP8573AVX/NOPB is a Real Time Clock (RTC) IC with Clock/Calendar functionality manufactured by Texas Instruments. This 28-LCC (J-Lead) surface mount device provides parallel interface timing and calendar operations with alarm and leap year capabilities. The part is currently active in production with 810 units in stock inventory.

Substitute parts are identified when equivalent RTC Clock/Calendar functionality can be achieved through alternative manufacturers or package configurations while maintaining core electrical and mechanical compatibility within the allowed parameter ranges for this product category.

Key Parameters

Parameter	DP8573AVX/NOPB
Manufacturer	Texas Instruments
Category	Clock/Timing
Type	Clock/Calendar
Interface	Parallel
Package / Case	28-LCC (J-Lead)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Voltage - Supply, Battery	2.2V ~ 5.1V
Operating Temperature	-40°C ~ 85°C
Time Format	HH:MM:SS:hh (12/24 hr)
Date Format	YY-MM-DD-dd
Features	Alarm, Leap Year
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the DP8573AVX/NOPB are qualified based on the following criteria:

Core Functional Requirements:

Category: Clock/Timing
Type: Clock/Calendar
Interface: Parallel
Time Format: HH:MM:SS with 12/24 hour capability
Date Format: YY-MM-DD-dd
Features: Alarm and Leap Year support

Electrical Compatibility:

Supply Voltage: 4.5V ~ 5.5V (primary operating range)
Battery Supply Voltage: Minimum 2.2V compatibility
Operating Temperature: -40°C ~ 85°C range

Mechanical Compatibility:

Mounting Type: Surface Mount
Package configurations: Alternative surface mount packages (SOIC, LQFP, SOP) with equivalent pin counts and signal routing

Substitutes are grouped by package type and electrical characteristics. Parts meeting all core functional and electrical parameters are considered equivalent for selection purposes.

Parameter Comparison

Parameter	DP8573AVX/NOPB	DS12885+	DS12R885S-33+	DS1556-70+	DS1558W+TRL	DS1687-3IND+	DS1744-70IND+	M48T08Y-10MH1F
Manufacturer	Texas Instruments	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	STMicroelectronics
Type	Clock/Calendar	Clock/Calendar	Clock/Calendar	Clock/Calendar	Clock/Calendar	Clock/Calendar	Clock/Calendar	Clock/Calendar
Interface	Parallel	Parallel	Parallel	Parallel	Parallel	Parallel	Parallel	Parallel
Package / Case	28-LCC (J-Lead)	24-DIP (0.600", 15.24mm)	24-SOIC (0.295", 7.50mm Width)	32-DIP Module (0.600", 15.24mm)	48-LQFP	24-DIP Module (0.600", 15.24mm)	28-DIP Module (0.600", 15.24mm)	28-SOP (0.350", 8.89mm Width)
Mounting Type	Surface Mount	Through Hole	Surface Mount	Through Hole	Surface Mount	Through Hole	Through Hole	Surface Mount
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	2.97V ~ 3.63V	4.5V ~ 5.5V	2.97V ~ 3.63V	2.7V ~ 3.7V	4.5V ~ 5.5V	4.5V ~ 5.5V
Voltage - Supply, Battery	2.2V ~ 5.1V	2.5V ~ 4V	2V ~ 3.05V	-	2.5V ~ 3.7V	2.5V ~ 3.7V	-	-
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C
Time Format	HH:MM:SS:hh (12/24 hr)	HH:MM:SS (12/24 hr)	HH:MM:SS (12/24 hr)	HH:MM:SS (24 hr)	HH:MM:SS (24 hr)	HH:MM:SS (12/24 hr)	HH:MM:SS (24 hr)	HH:MM:SS (24 hr)
Date Format	YY-MM-DD-dd	YY-MM-DD-dd	YY-MM-DD-dd	YY-MM-DD-dd	YY-MM-DD-dd	YY-MM-DD-dd	YY-MM-DD-dd	YY-MM-DD-dd
Features	Alarm, Leap Year	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K	Alarm, Leap Year, Watchdog Timer, Y2K	Alarm, NVSRAM, Square Wave Output, Y2K	Leap Year, NVSRAM, Y2K	Leap Year, Watchdog Timer
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements equivalent to the DP8573AVX/NOPB.

Surface Mount Substitutes (Recommended for Direct PCB Replacement):

DS12R885S-33+: 24-SOIC package, operates at 2.97V ~ 3.63V supply voltage
DS1558W+TRL: 48-LQFP package, operates at 2.97V ~ 3.63V supply voltage
M48T08Y-10MH1F: 28-SOP package, operates at 4.5V ~ 5.5V supply voltage

Through Hole Substitutes (Alternative Mounting Configuration):

DS12885+: 24-DIP package, operates at 4.5V ~ 5.5V supply voltage
DS1556-70+: 32-DIP Module package, operates at 4.5V ~ 5.5V supply voltage
DS1687-3IND+: 24-DIP Module package, operates at 2.7V ~ 3.7V supply voltage
DS1744-70IND+: 28-DIP Module package, operates at 4.5V ~ 5.5V supply voltage

Selection should be based on circuit board layout requirements, available mounting technology, and system supply voltage specifications. All substitutes provide parallel interface Clock/Calendar functionality with leap year support.

Frequently Asked Questions (FAQ)

Q: Can DS12R885S-33+ replace DP8573AVX/NOPB directly on the PCB? A: DS12R885S-33+ is a surface mount part in 24-SOIC package versus the 28-LCC package of the original. Direct PCB replacement requires layout modification. However, electrical functionality is compatible when supply voltage is adjusted to 2.97V ~ 3.63V range.

Q: What is the key difference between surface mount and through hole substitutes? A: Surface mount substitutes (DS12R885S-33+, DS1558W+TRL, M48T08Y-10MH1F) mount directly to PCB pads. Through hole substitutes (DS12885+, DS1556-70+, DS1687-3IND+, DS1744-70IND+) require drilled holes and are inserted vertically. PCB design determines which mounting type is applicable.

Q: Are all substitutes compatible with 4.5V ~ 5.5V supply voltage? A: No. DS12R885S-33+, DS1558W+TRL, and DS1687-3IND+ operate at lower voltage ranges (2.97V ~ 3.63V or 2.7V ~ 3.7V). DS12885+, DS1556-70+, DS1744-70IND+, and M48T08Y-10MH1F are compatible with 4.5V ~ 5.5V supply voltage.

Q: Do all substitutes support both 12-hour and 24-hour time formats? A: No. DS1556-70+, DS1558W+TRL, DS1744-70IND+, and M48T08Y-10MH1F support 24-hour format only. DS12885+, DS12R885S-33+, and DS1687-3IND+ support both 12-hour and 24-hour formats.

Q: What is the operating temperature range for each substitute? A: DP8573AVX/NOPB, DS12R885S-33+, DS1558W+TRL, DS1687-3IND+, and DS1744-70IND+ operate across -40°C ~ 85°C. DS12885+, DS1556-70+, and M48T08Y-10MH1F operate across 0°C ~ 70°C, which is a narrower range.

Q: Which substitute has the most similar package to the original DP8573AVX/NOPB? A: M48T08Y-10MH1F in 28-SOP package most closely matches the pin count (28 pins) and surface mount configuration of the original 28-LCC package.

Q: Are battery backup capabilities consistent across all substitutes? A: No. DS1556-70+ and DS1744-70IND+ do not specify battery supply voltage ranges. All other substitutes include battery backup voltage specifications ranging from 2V to 5.1V depending on the part.

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