Request Quote
(Ships tomorrow)
PCF8593P,112 Equivalent & Substitute Parts
Part Overview
The PCF8593P,112 is a Real Time Clock (RTC) IC with Clock/Calendar functionality, manufactured by NXP USA Inc. This 8-DIP through-hole device provides I2C/2-Wire Serial interface with 8B NVSRAM, alarm capability, and time/date tracking in 12/24-hour format. The part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing system support.
Substiute Parts
Key Parameters
| Parameter | PCF8593P,112 |
|---|---|
| Manufacturer | NXP USA Inc. |
| Category | Clock/Timing |
| Type | Clock/Calendar |
| Interface | I2C, 2-Wire Serial |
| Memory Size | 8B |
| Time Format | HH:MM:SS:hh (12/24 hr) |
| Date Format | YY-MM-DD-dd |
| Voltage Supply | 2.5V ~ 6V |
| Current - Timekeeping (Max) | 8µA ~ 15µA @ 2V ~ 5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Features | Alarm, NVSRAM |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution for the PCF8593P,112 is determined by the following critical parameters:
Interface Compatibility: All substitute parts must support I2C/2-Wire Serial communication to maintain firmware and circuit compatibility.
Functional Features: Alarm and calendar functionality are required. NVSRAM presence is preferred but not mandatory for basic timekeeping applications.
Voltage Supply Range: Substitute parts must operate within or encompass the 2.5V ~ 6V supply range of the original part.
Time/Date Format Support: 12/24-hour time format and YY-MM-DD-dd date format support are essential for system integration.
Operating Temperature: -40°C ~ 85°C operating range must be maintained for industrial and commercial applications.
Package Consideration: The original through-hole 8-DIP package is obsolete. Surface-mount alternatives (8-SOIC, 8-TSSOP, 8-WCDFN) are acceptable substitutes when circuit board redesign is feasible. Through-hole compatibility is not a limiting factor for new designs.
Product Status: Active status substitutes are preferred to ensure long-term availability and supply chain stability.
Parameter Comparison
| Parameter | PCF8593P,112 | 1337DVGI | AB-RTCMC-32.768KHZ-AIGZ-S7-T | DS1307ZN+T&R | DS1308U-18+T | DS1308U-33+ | DS1337U+ | DS1338C-3# | DS1338Z-18+T&R | DS1338Z-33+ | DS1339U-3+ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Renesas Electronics | Abracon LLC | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim |
| Interface | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial |
| Time Format | HH:MM:SS:hh (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS:hh (24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 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 | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd |
| Voltage Supply | 2.5V ~ 6V | 1.8V ~ 5.5V | 1V ~ 4.4V | 4.5V ~ 5.5V | 1.71V ~ 5.5V | 3V ~ 5.5V | 1.8V ~ 5.5V | 2.7V ~ 5.5V | 1.71V ~ 5.5V | 3V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Features | Alarm, NVSRAM | Alarm, Leap Year, Square Wave Output | Alarm, Leap Year, Watchdog Timer | Leap Year, NVSRAM, Square Wave Output | Leap Year, NVSRAM, Square Wave Output | Leap Year, NVSRAM, Square Wave Output | Alarm, Leap Year, Square Wave Output | Leap Year, NVSRAM, Square Wave Output | Leap Year, NVSRAM, Square Wave Output | Leap Year, NVSRAM, Square Wave Output | Alarm, Leap Year, Square Wave Output, Trickle-Charger |
| Memory Size | 8B | — | — | 56B | 56B | 56B | — | 56B | 56B | 56B | — |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-TSSOP, 8-MSOP (0.118", 3.00mm) | 8-WCDFN | 8-SOIC (0.154", 3.90mm) | 8-TSSOP, 8-MSOP (0.118", 3.00mm) | 8-TSSOP, 8-MSOP (0.118", 3.00mm) | 8-TSSOP, 8-MSOP (0.118", 3.00mm) | 16-SOIC (0.295", 7.50mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-TSSOP, 8-MSOP (0.118", 3.00mm) |
| Mounting Type | Through Hole | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Current - Timekeeping (Max) | 8µA ~ 15µA @ 2V ~ 5V | 0.6µA @ 1.3V ~ 1.8V | 0.4µA ~ 0.95µA @ 1V ~ 4.4V | 200µA @ 5V | 100µA @ 200µA @ 1.89V ~ 5.5V | 125µA ~ 200µA @ 3V ~ 5.5V | 0.6µA @ 1.3V ~ 1.8V | 200µA @ 3.3V | 100µA @ 1.89V | 125µA ~ 200µA @ 3.63V ~ 5.5V | 150µA @ 3.3V |
Engineering Selection Recommendations
Primary Substitutes (Active Status, Full Feature Compatibility):
DS1337U+ and 1337DVGI are the most direct functional equivalents. Both support I2C interface, alarm functionality, leap year calculation, and square wave output. DS1337U+ operates across 1.8V ~ 5.5V, encompassing the original 2.5V ~ 6V range. The 1337DVGI provides identical feature set with equivalent voltage coverage. Both are in active production status with ROHS3 compliance.
Extended Memory Alternatives (56B NVSRAM):
DS1338Z-33+, DS1338Z-18+T&R, DS1308U-33+, and DS1308U-18+T provide 56B NVSRAM compared to the original 8B. These are suitable for applications requiring expanded non-volatile storage. DS1338Z variants use 8-SOIC packaging; DS1308U variants use 8-TSSOP packaging. All maintain I2C interface, alarm capability, and -40°C ~ 85°C operating range.
Low-Power Alternative:
AB-RTCMC-32.768KHZ-AIGZ-S7-T offers the lowest timekeeping current (0.4µA ~ 0.95µA) and operates across 1V ~ 4.4V, making it suitable for battery-powered applications. Features include alarm, leap year, and watchdog timer. 8-WCDFN surface-mount package requires PCB redesign.
Voltage-Constrained Selection:
DS1307ZN+T&R requires 4.5V ~ 5.5V supply voltage, limiting its use to 5V-only systems. It provides 56B NVSRAM, leap year support, and square wave output in 8-SOIC package.
All substitute parts maintain ROHS3 compliance and -40°C ~ 85°C operating temperature range, ensuring regulatory and environmental compatibility with the original PCF8593P,112.
Frequently Asked Questions (FAQ)
Q: Can I use a surface-mount substitute in place of the through-hole PCF8593P,112 without circuit board redesign?
A: No. The original PCF8593P,112 uses 8-DIP through-hole packaging. All listed substitutes are surface-mount devices (8-SOIC, 8-TSSOP, 8-WCDFN). Direct pin-for-pin replacement requires PCB redesign and rework. For through-hole applications, evaluate design feasibility for surface-mount conversion or source remaining PCF8593P,112 inventory.
Q: What is the key difference between DS1337U+ and DS1338Z-33+?
A: DS1337U+ provides alarm functionality with no NVSRAM (memory size not specified). DS1338Z-33+ includes 56B NVSRAM for data storage. Both support I2C interface, 12/24-hour time format, and -40°C ~ 85°C operation. DS1337U+ uses 8-TSSOP packaging; DS1338Z-33+ uses 8-SOIC packaging. Select based on memory requirements and available PCB footprint.
Q: Is the AB-RTCMC-32.768KHZ-AIGZ-S7-T suitable for battery-backed timekeeping?
A: The AB-RTCMC-32.768KHZ-AIGZ-S7-T supports I2C interface and alarm functionality with ultra-low timekeeping current (0.4µA ~ 0.95µA @ 1V ~ 4.4V). However, battery supply voltage specification is not provided in the datasheet parameters. Verify battery voltage compatibility with the 1V ~ 4.4V supply range before implementation.
Q: Why do some substitutes have higher timekeeping current than the original PCF8593P,112?
A: Timekeeping current varies by device architecture and voltage level. DS1307ZN+T&R and DS1338 variants specify 100µA ~ 200µA at higher voltage levels (3V ~ 5.5V). The original PCF8593P,112 specifies 8µA ~ 15µA at 2V ~ 5V. For battery-powered applications, select DS1337U+ (0.6µA @ 1.3V ~ 1.8V) or AB-RTCMC-32.768KHZ-AIGZ-S7-T (0.4µA ~ 0.95µA @ 1V ~ 4.4V).
Q: Are all substitutes ROHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant, matching the environmental compliance of the original PCF8593P,112.
Q: What packaging options are available for new designs?
A: Surface-mount options include 8-SOIC (DS1307ZN+T&R, DS1338Z variants), 8-TSSOP/8-MSOP (1337DVGI, DS1308U variants, DS1337U+, DS1339U-3+), and 8-WCDFN (AB-RTCMC-32.768KHZ-AIGZ-S7-T). The 16-SOIC package is available for DS1338C-3# if additional pin count is required. Select based on PCB layout constraints and manufacturing capabilities.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts