PCF8564AUG/12HB/1V Equivalent & Substitute Parts

Part Overview

The PCF8564AUG/12HB/1V is a Real Time Clock (RTC) IC with Clock/Calendar functionality manufactured by NXP USA Inc. This die-format component operates via I2C 2-Wire Serial interface and supports a wide supply voltage range of 1V to 5.5V. The device is classified as Active product status with ROHS3 compliance. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct functional replacement in applications requiring RTC clock/calendar functionality with I2C interface compatibility.

Key Parameters

Parameter	PCF8564AUG/12HB/1V
Manufacturer	NXP USA Inc.
Category	Clock/Timing
Type	Clock/Calendar
Interface	I2C, 2-Wire Serial
Voltage - Supply	1V ~ 5.5V
Time Format	HH:MM:SS (24 hr)
Date Format	YY-MM-DD-dd
Operating Temperature	-40°C ~ 85°C
Features	Alarm, Leap Year, Square Wave Output, Watchdog Timer
Current - Timekeeping (Max)	0.6µA ~ 0.75µA @ 2V ~ 5V
Package / Case	Die
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Interface Compatibility: All substitute parts must support I2C 2-Wire Serial interface
Supply Voltage Range: Substitute parts must operate within or encompass the 1V ~ 5.5V range
Time/Date Format: Substitute parts must support HH:MM:SS and YY-MM-DD-dd formats
Operating Temperature: Substitute parts must support -40°C ~ 85°C range
Product Status: All substitute parts must be Active status
RoHS Compliance: All substitute parts must maintain ROHS3 compliance
Functional Features: Substitute parts must include Leap Year and Square Wave Output as minimum features

Substitute parts are grouped into two categories based on packaging and feature alignment:

Group 1 - Enhanced Feature Set (DS1337U+, DS1308U-33+): These parts include Alarm functionality matching the original specification and support extended voltage ranges. DS1337U+ operates at 1.8V ~ 5.5V with ultra-low timekeeping current of 0.6µA, directly comparable to the original. DS1308U-33+ operates at 3V ~ 5.5V with NVSRAM memory.

Group 2 - Standard Feature Set (DS1307Z+T&R, DS1307ZN+T&R, DS1338Z-18+, DS1388Z-3+, DS1388Z-5+, DS3231M+, DS3232MZ+TRL, BQ32002D): These parts provide Clock/Calendar functionality with Leap Year and Square Wave Output. DS1307 variants and DS1338Z-18+ include 56B NVSRAM. DS1388 variants include 512B EEPROM with Supervisor and Trickle-Charger features. DS3231M+ and DS3232MZ+TRL provide enhanced accuracy with Alarm features.

Parameter Comparison

Part Number	Manufacturer	Interface	Voltage - Supply	Time Format	Date Format	Operating Temp	Features	Current - Timekeeping (Max)	Package / Case	Product Status	RoHS Status
PCF8564AUG/12HB/1V	NXP USA Inc.	I2C, 2-Wire Serial	1V ~ 5.5V	HH:MM:SS (24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Alarm, Leap Year, Square Wave Output, Watchdog Timer	0.6µA ~ 0.75µA @ 2V ~ 5V	Die	Active	ROHS3 Compliant
DS1337U+	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	1.8V ~ 5.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Alarm, Leap Year, Square Wave Output	0.6µA @ 1.3V ~ 1.8V	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Active	ROHS3 Compliant
DS1308U-33+	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	3V ~ 5.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Leap Year, NVSRAM, Square Wave Output	125µA ~ 200µA @ 3V ~ 5.5V	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Active	ROHS3 Compliant
DS1307Z+T&R	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	4.5V ~ 5.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	0°C ~ 70°C	Leap Year, NVSRAM, Square Wave Output	200µA @ 5V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant
DS1307ZN+T&R	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	4.5V ~ 5.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Leap Year, NVSRAM, Square Wave Output	200µA @ 5V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant
DS1338Z-18+	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	1.71V ~ 5.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Leap Year, NVSRAM, Square Wave Output	100µA @ 1.89V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant
DS1388Z-3+	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	2.7V ~ 3.3V	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer	140µA @ 2.7V ~ 3.3V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant
DS1388Z-5+	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	4.5V ~ 5.5V	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer	270µA @ 4.5V ~ 5.5V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant
DS3231M+	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	2.3V ~ 5.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Alarm, Leap Year, Square Wave Output	130µA ~ 200µA @ 3.63V ~ 5.5V	16-SOIC (0.295", 7.50mm Width)	Active	ROHS3 Compliant
DS3232MZ+TRL	Analog Devices Inc./Maxim Integrated	I2C, 2-Wire Serial	2.3V ~ 4.5V	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Alarm, Leap Year, Square Wave Output, SRAM	175µA @ 2.3V ~ 4.5V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant
BQ32002D	Texas Instruments	I2C, 2-Wire Serial	3V ~ 3.6V	HH:MM:SS (24 hr)	YY-MM-DD-dd	-40°C ~ 85°C	Leap Year, Square Wave Output, Trickle-Charger	200µA @ 3.3V	8-SOIC (0.154", 3.90mm Width)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute - DS1337U+: This part demonstrates the closest electrical alignment to the PCF8564AUG/12HB/1V. It operates across 1.8V ~ 5.5V supply range, includes Alarm functionality, and achieves 0.6µA timekeeping current at 1.3V ~ 1.8V, matching the original specification. Both parts are Active status with ROHS3 compliance. The 8-TSSOP package requires PCB layout modification from the die format.

Secondary Substitute - DS1338Z-18+: This part supports the extended voltage range of 1.71V ~ 5.5V and includes 56B NVSRAM. Operating temperature range matches the original at -40°C ~ 85°C. Timekeeping current of 100µA @ 1.89V is higher than the original but remains within acceptable parameters for most applications. Active status and ROHS3 compliance are maintained.

Alternative Substitute - DS3232MZ+TRL: This part provides Alarm functionality and operates at 2.3V ~ 4.5V with 236B SRAM memory. It maintains -40°C ~ 85°C operating temperature and Active product status with ROHS3 compliance. The 8-SOIC package is compatible with standard PCB assembly processes.

Voltage-Constrained Applications - BQ32002D: For applications operating at 3V ~ 3.6V, the BQ32002D from Texas Instruments provides Clock/Calendar functionality with Leap Year and Square Wave Output features. It maintains -40°C ~ 85°C operating temperature and ROHS3 compliance. The 24-hour time format matches the original specification.

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can DS1307Z+T&R replace PCF8564AUG/12HB/1V in all applications?

A: DS1307Z+T&R operates at 4.5V ~ 5.5V supply voltage, which does not encompass the original part's 1V minimum specification. This part is suitable only for applications operating at 4.5V or higher. Additionally, the operating temperature range is limited to 0°C ~ 70°C, narrower than the original -40°C ~ 85°C specification.

Q: What is the primary advantage of DS1337U+ as a substitute?

A: DS1337U+ maintains the closest electrical compatibility with the original part. It operates across 1.8V ~ 5.5V, includes Alarm functionality, and achieves 0.6µA timekeeping current at 1.3V ~ 1.8V. The -40°C ~ 85°C operating temperature range and Active product status with ROHS3 compliance match the original specification.

Q: Are there package compatibility considerations when selecting a substitute?

A: Yes. The original PCF8564AUG/12HB/1V is supplied in die format. All substitute parts are packaged in either 8-SOIC, 8-TSSOP/8-MSOP, or 16-SOIC formats. PCB layout and assembly processes must be modified accordingly. Die-format substitutes are not available in this list.

Q: Which substitute part supports the widest voltage range?

A: DS1338Z-18+ supports 1.71V ~ 5.5V supply voltage, the widest range among substitute parts. This part includes 56B NVSRAM and maintains -40°C ~ 85°C operating temperature with Active status and ROHS3 compliance.

Q: Can BQ32002D be used in low-voltage applications below 3V?

A: No. BQ32002D operates at 3V ~ 3.6V supply voltage and does not support operation below 3V. For applications requiring operation at 1V ~ 3V, DS1337U+ or DS1338Z-18+ are appropriate alternatives.

Q: What is the difference between DS1388Z-3+ and DS1388Z-5+?

A: Both parts include 512B EEPROM, Supervisor, Trickle-Charger, and Watchdog Timer features. DS1388Z-3+ operates at 2.7V ~ 3.3V with 140µA timekeeping current. DS1388Z-5+ operates at 4.5V ~ 5.5V with 270µA timekeeping current. Selection depends on the application's supply voltage requirements.

Q: Do all substitute parts support I2C 2-Wire Serial interface?

A: Yes. All substitute parts listed support I2C 2-Wire Serial interface, maintaining functional compatibility with the original PCF8564AUG/12HB/1V.

Q: Which substitute parts include Watchdog Timer functionality like the original?

A: DS1388Z-3+ and DS1388Z-5+ include Watchdog Timer functionality. These parts also include EEPROM, Supervisor, and Trickle-Charger features, providing enhanced system protection capabilities.

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