DS1232LP Equivalent & Substitute Parts

Part Overview

The DS1232LP is a single-channel power supply supervisor IC from Analog Devices Inc./Maxim Integrated, designed for power-on reset and simple reset applications. This device monitors a single voltage rail and provides active high/active low reset outputs with adjustable or selectable timeout periods. The DS1232LP is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The part is available in 8-DIP through-hole packaging and operates across the 0°C to 70°C temperature range.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage Threshold	4.37V, 4.62V
Output Configuration	Open Drain, Push-Pull
Reset Logic	Active High/Active Low
Reset Timeout	Adjustable/Selectable
Operating Temperature	0°C ~ 70°C (TA)
Package Type	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the DS1232LP is determined by strict alignment of the following critical parameters:

Single voltage monitoring channel
Voltage threshold levels of 4.37V and 4.62V
Output configuration (Open Drain or Open Drain/Open Collector)
Reset logic capability (Active High/Active Low)
8-DIP through-hole package format
Operating temperature range compatibility
Moisture sensitivity level (MSL 1)

Substitute parts are grouped into two categories: direct manufacturer variants and cross-manufacturer equivalents. Direct variants (DS1232LP+, DS1232+) maintain identical electrical specifications and are produced by the original manufacturer. Cross-manufacturer equivalents (TC1232CPA, TC1232EPA) are produced by Microchip Technology and meet the same functional and electrical requirements within their specified operating ranges.

Parameter Comparison

Parameter	DS1232LP	DS1232LP+	DS1232+	TC1232CPA	TC1232EPA
Manufacturer	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Microchip Technology	Microchip Technology
Product Status	Obsolete	Active	Active	Active	Active
Number of Voltages Monitored	1	1	1	1	1
Voltage Threshold	4.37V, 4.62V	4.37V, 4.62V	4.37V, 4.62V	4.37V, 4.62V	4.37V, 4.62V
Output Configuration	Open Drain, Push-Pull	Open Drain, Push-Pull	Open Drain, Push-Pull	Open Drain or Open Collector	Open Drain or Open Collector
Reset Logic	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low
Reset Timeout	Adjustable/Selectable	Adjustable/Selectable	Adjustable/Selectable	250ms Minimum	250ms Minimum
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C
Package Type	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications currently using the obsolete DS1232LP, the DS1232LP+ is the direct replacement, maintaining identical electrical specifications and operating parameters while offering active product status and ROHS3 compliance. The DS1232+ provides equivalent functionality with the same voltage thresholds and reset characteristics.

For new designs or applications requiring extended temperature range operation, the TC1232EPA from Microchip Technology extends the operating temperature to -40°C to 85°C while maintaining all critical voltage monitoring and reset parameters. The TC1232CPA is suitable for applications within the standard 0°C to 70°C range.

All substitute parts maintain the same 8-DIP through-hole package format, single-channel voltage monitoring architecture, and MSL 1 moisture sensitivity rating. Selection between Analog Devices and Microchip variants depends on supply chain availability, compliance requirements, and temperature range specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can DS1232LP+ be used as a direct replacement for DS1232LP?

A: Yes. The DS1232LP+ maintains identical electrical specifications, voltage thresholds (4.37V, 4.62V), output configuration, reset logic, and operating temperature range (0°C to 70°C). The primary difference is product status (active vs. obsolete) and improved RoHS3 compliance.

Q: What is the difference between DS1232+ and DS1232LP+?

A: Both parts share identical electrical specifications and operating parameters. The DS1232+ uses a different base product designation but provides the same single-channel voltage monitoring, threshold levels, and reset functionality in the same 8-DIP package.

Q: Can Microchip TC1232 variants replace Analog Devices DS1232 parts?

A: Yes, within specified operating conditions. TC1232CPA and TC1232EPA maintain the same voltage thresholds (4.37V, 4.62V), single-channel monitoring, reset logic, and 8-DIP package. The TC1232EPA offers extended temperature range (-40°C to 85°C) compared to the standard 0°C to 70°C range.

Q: What is the key difference between TC1232CPA and TC1232EPA?

A: The operating temperature range differs. TC1232CPA operates from 0°C to 70°C, while TC1232EPA operates from -40°C to 85°C. Both maintain identical voltage thresholds and reset specifications.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitute parts use the 8-DIP (0.300", 7.62mm) through-hole package, ensuring direct mechanical and electrical compatibility on existing PCB layouts.

Q: What does the reset timeout specification mean for substitution?

A: The DS1232LP series specifies adjustable/selectable reset timeout, while TC1232 variants specify 250ms minimum. Both approaches provide reset functionality; the difference lies in configuration flexibility. Verify your application's timeout requirements before selection.

Q: Are all substitute parts RoHS compliant?

A: The original DS1232LP is RoHS non-compliant. All substitute parts (DS1232LP+, DS1232+, TC1232CPA, TC1232EPA) are ROHS3 compliant, meeting current environmental regulations.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message